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Document:	RA90/RA92/H9643 Installation Guide
Order Number:	EK-RA90H-IN
Revision:	002
Pages:	36
Original Filename:

OCR Text

RA90/RA92/H9643 Cabinet Installation Guide
Order Number EK-RA90H-IN-002

Digital Equipment Corporation
Maynard, Massachusetts

First Printing, July 1989
Second Printing, July 1990
The information in this document is subject to change without notice and should not be construed as a commitment
by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may
appear in this document.
The software described in this document is furnished under a license and may be used or copied only in
accordance with the terms of such license.
No responsibility is assumed for the use or reliability of software on equipment that is not supplied by Digital
Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in
subparagraph (c) (1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013.
Copyright © 1989, 1990 by Digital Equipment Corporation

All Rights Reserved.
Printed in U.S.A.
The postpaid READER’S COMMENTS card requests the user’s critical evaluation to assist in preparing future
documentation.
FCC NOTICE: The equipment described in this manual generates, uses, and may emit radio frequency energy.
The equipment has been type tested and found to comply with the limits for a Class A computing device pursuant
to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such radio
frequency interference when operated in a commercial environment. Operation of this equipment in a residential
area may cause interference, in which case the user at his own expense may be required to take measures to
correct the interference.
The following are trademarks of Digital Equipment Corporation:
DEC
DECUS
DECnet
HSC
KDA
MASSBUS
MicroVAX
MSCP
PDP
RA

RC25
RQDX3
RSTS/E
RSX
RT-11
SA
TA
TK
TOPS-10
TOPS-20

TU
UDA50
ULTRIX
UNIBUS
VAX
VAXsimPLUS
VMS

The RA90 disk drive, ©1987 by Digital Equipment Corporation, is covered by one or more of the following U.S.
patents: 4,475,212, 4,434,487, 4,503,420, 4,150,172, 4,811,278, 4,811,279 and other patents pending.

This document was prepared using VAX DOCUMENT, Version 1.1

Contents
About This Manual
1

General Information
1.1

Product Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1

1.2

RA90/RA92/H9643 Cabinet System Specifications . . . . . . . . . . . . . . . . . . . . . . .

1–3

1.3

Thermal Stabilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–5

1.4

Unpacking and De-Skidding the RA90/RA92/H9643 Cabinet System . . . . . . . . .

1–6

1.5
Unpacking the RA90/RA92 Add-On Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.1
RA90/RA92 Add-On Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–6
1–6

1.6
Repackaging Equipment for Storage or Shipment . . . . . . . . . . . . . . . . . . . . . . . .
1.6.1
Repackaging the RA90/RA92 Add-On Disk Drive . . . . . . . . . . . . . . . . . . . . . .
1.6.2
Repackaging the RA90/RA92/H9643 Cabinet System . . . . . . . . . . . . . . . . . . .

1–8
1–8
1–9

Preparation and Installation
2.1

Site Preparation and Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1

2.2

RA90/RA92/H9643 Cabinet System Installation . . . . . . . . . . . . . . . . . . . . . . . . .

2–1

2.3
Required Hardware for RA90/RA92 Add-On Disk Drive Installation . . . . . . . . .
2.3.1
Hardware Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2
2–2

2.4
RA90/RA92 Add-On Disk Drive Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1
RA90/RA92 Add-On Disk Drive Order Sequence for H9643 Cabinet . . . . . . . .
2.4.2
Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.3
Removing and Replacing the Cabinet Front Bezels . . . . . . . . . . . . . . . . . . . . .
2.4.4
Removing and Replacing the RA90/RA92 OCP . . . . . . . . . . . . . . . . . . . . . . . .
2.4.5
Removing and Replacing the Cabinet Rear Access Panel . . . . . . . . . . . . . . . .
2.4.6
Removing and Replacing the Cabinet Top Cover . . . . . . . . . . . . . . . . . . . . . . .
2.4.7
Removing and Replacing the Cabinet Kick Plate . . . . . . . . . . . . . . . . . . . . . .
2.4.8
Stabilizer Plate (Weight) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.9
Installing Cabinet Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.10 Placing the RA90/RA92 Add-On Disk Drive Into the Cabinet . . . . . . . . . . . . .

2–3
2–4
2–5
2–6
2–7
2–7
2–7
2–8
2–8
2–8
2–10

2.5

2–11

SDI Cable and Power Cord Routing and Connections . . . . . . . . . . . . . . . . . . . . .

iii

iv Contents

Applying Power
3.1

Power Connector Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1

3.2
874–D/F Power Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1
874 Power Controller Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2
874 Power Controller Remote/Off/Local Switch . . . . . . . . . . . . . . . . . . . . . . . .
3.2.3
874–F Power Controller Cable (Cordage) . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–4
3–4
3–4

3.3

RA90/RA92 Voltage Selector Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–5

3.4

RA90/RA92 Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–6

3.5

Applying Power to the RA90/RA92/H9643 Cabinet System . . . . . . . . . . . . . . . . .

3–6

RA90/RA92/H9643 Cabinet System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RA90–NA/RA92–NA Add-On Shipping Container Contents . . . . . . . . . . . . . . . .
Installing Disk Drive/Cabinet Hardware, Front View . . . . . . . . . . . . . . . . . . . . .
RA90/RA92/H9643 Cabinet System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Bezel, OCP, Bezel Connector Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Rails and Kick Plate (Front) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SDI Cables and Power Cords Routing, Rear View . . . . . . . . . . . . . . . . . . . . . . . .
SDI Cables and Power Cords Connections, Rear View . . . . . . . . . . . . . . . . . . . .
RA90/RA92 Voltage Selector Switch/Circuit Breaker . . . . . . . . . . . . . . . . . . . . .
Power Connector Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
874 Power Controller, Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
874 Power Controller, Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RA90/RA92 Voltage Selector Switch/Circuit Breaker . . . . . . . . . . . . . . . . . . . . .

1–2
1–7
2–3
2–4
2–6
2–9
2–12
2–13
2–14
3–2
3–3
3–3
3–5

RA90/RA92/H9643 Cabinet System Variations . . . . . . . . . . . . . . . . . . . . . . . . . .
RA90/RA92/H9643 Cabinet System Physical Specifications . . . . . . . . . . . . . . . .
RA90/RA92/H9643 Cabinet System Environmental Limits (Maximum) . . . . . . .
RA90/RA92/H9643 Cabinet System Recommended Environmental Operating
Range Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RA90/RA92/H9643 Cabinet System Electrical Specifications for 120 Vac . . . . . .
RA90/RA92/H9643 Cabinet System Electrical Specifications for 240 Vac . . . . . .
RA90/RA92 Disk Drive Electrical Specifications by Model . . . . . . . . . . . . . . . . .
RA90–NA/RA92–NA Add-On Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
874–F Power Controller 220/240 Vac Power Cable Variations . . . . . . . . . . . . . . .

1–1
1–3
1–3

Index
Figures
1–1
1–2
2–1
2–2
2–3
2–4
2–5
2–6
2–7
3–1
3–2
3–3
3–4

Tables
1–1
1–2
1–3
1–4
1–5
1–6
1–7
1–8
1–9
3–1

1–4
1–4
1–5
1–5
1–8
1–8
3–4

About This Manual
The primary purpose of this manual is to provide the user and/or Digital Customer Services
engineer with a reference guide for installing an RA90/RA92 disk drive in an H9643 cabinet. Its
secondary purpose is to provide assistance with installing the RA90/RA92/H9643 cabinet system.
Because this information is primarily for the user installing an RA90/RA92 add-on disk drive in
an H9643 cabinet, specific procedures, such as unpacking and de-skidding the cabinet system, are
not contained in this manual. Refer to the individual component’s user manuals when unpacking
and operating the RA90/RA92/H9643 cabinet system. Reference documentation to supplement this
manual is as follows:
Document Title

Order Number

RA90/RA92 Disk Drive User Guide

EK–0RA90–UG

H9643 Cabinet System User Guide

EK–H9643–UG

1
General Information
This chapter describes the RA90/RA92/H9643 cabinet system in detail. Procedures for thermal
stabilization, unpacking the RA90/RA92 add-on disk drive, and repackaging the RA90/RA92/H9643
cabinet system and RA90/RA92 add-on disk drive are presented. The contents of the RA90–NA/
RA92–NA add-on kit are also described.
The procedure for unpacking the RA90/RA92/H9643 cabinet system can be found in the H9643
Cabinet System User Guide.

1.1 Product Descriptions
The RA90/RA92/H9643 cabinet system is a Winchester disk drive storage product containing from
one to six RA90/RA92 disk drives. Refer to Figure 1–1.
The RA90/RA92/H9643 cabinet system accommodates up to six RA90/RA92 disk drives. Using any
of the eight variation part numbers (P/Ns), the customer can order the system that suits capacity
needs. Refer to Table 1–1 for a list of variation P/Ns and descriptions.
Table 1–1 RA90/RA92/H9643 Cabinet System Variations
RA90/RA92
Disk Drives

H9643
Cabinet

Voltage

RA90–CA/RA92–CA

100/120

RA90–CD/RA92–CD

220/240

RA90–FA/RA92–FA

100/120

RA90–FD/RA92–FD

220/240

RA90–HA/RA92–HA

100/120

RA90–HD/RA92–HD

220/240

RA90–JA/RA92–JA

100/120

RA90–JD/RA92–JD

220/240

P/N

As capacity needs increase, an RA90/RA92 add-on disk drive (P/N RA90–NA, RA92–NA) can
be added (following the prescribed add-on sequence) to any variation which is not already fully
populated.
The RA90/RA92 disk drive utilizes Winchester disk technology with thin film heads and plated
media. The RA90 disk drive has a formatted capacity of 1.216 gigabytes and an average seek
time of 18.5 milliseconds. The RA92 disk drive has a formatted capacity of 1.506 gigabytes and an
average seek time of 16.0 milliseconds. The RA90/RA92 has a data transfer rate of 2.77 megabytes
per second. Each spindle is independently powered, cooled, controlled, and housed.

1–1

1–2 General Information

DRIVE 4

DRIVE 5

DRIVE 1

DRIVE 0

DRIVE 3

DRIVE 2

CXO-2725A

Figure 1–1

RA90/RA92/H9643 Cabinet System

WARNING
When adding RA90/RA92 disk drives to the RA90/RA92/H9643 cabinet system, you must
follow the prescribed add-on order sequence to maintain cabinet stability. Install the
first add-on disk drive in disk drive position 1 (center level), the second in disk drive
position 2 (bottom level), and so on.

General Information 1–3

1.2 RA90/RA92/H9643 Cabinet System Specifications
Table 1–2 lists physical specifications for the RA90/RA92/H9643 cabinet system. Detailed
specifications for the RA90/RA92 disk drive are listed in the RA90/RA92 Disk Drive User Guide.
Table 1–2 RA90/RA92/H9643 Cabinet System Physical Specifications
Characteristic

Specification

Height*

106.68 centimeters (41.6 inches)

Width*

54.61 centimeters (21.3 inches)

Depth*

91.44 centimeters (35.7 inches)

Weight—unpacked (RA90/RA92–JA/JD)

309.09 kilograms (683.1 pounds)

Weight—unpacked (RA90/RA92–HA/HD)

236.36 kilograms (522.1 pounds)

Weight—unpacked (RA90/RA92–FA/FD)

163.63 kilograms (361.6 pounds)

Weight—unpacked (RA90/RA92–CA/CD)
(includes stabilizer plate (weight))

138.63 kilograms (306.4 pounds)

Shipping weight (RA90/RA92–JA/JD)

361.36 kilograms (798.6 pounds)

Shipping cube (All variations)

106.68 x 76.2 x 168.91 centimeters (41.6 inches front-toback x 29.7 inches wide x 25.9 inches high)

NOTE
* The height, width, and depth measurements are the same for all variations because all RA90/RA92
disk drives are housed in an H9643 cabinet with these dimensions.

Tables 1–3 and 1–4 list the environmental limits and recommended environmental operating ranges
for the RA90/RA92/H9643 cabinet system.
Table 1–3 RA90/RA92/H9643 Cabinet System Environmental Limits (Maximum)
Characteristic

Specification

Temperature
Operating

+10° to +40°C (+50° to +104°F) with a temperature
gradient of +11°C/hour (+20°F/hour)

Nonoperating

–40° to +66°C (–40° to +151°F)

Relative humidity
Operating

10% to 90% (noncondensing) with a minimum wet bulb
temperature of +28°C (+82°F) and a minimum dew point
of +2°C (+36°F)

Nonoperating

10% to 95%

1–4 General Information

Table 1–4 RA90/RA92/H9643 Cabinet System Recommended Environmental Operating Range
Specifications
Characteristic

Specification

Temperature

+18° to +24°C (+64.4° to +75.2°F) with an average rate of
change of +3°C/hour maximum and a step change of +3°C
or less

Relative humidity

40% to 60% (noncondensing) with a step change of 10% or
less (noncondensing)

Air quality (maximum particle count)

Not to exceed 500,000 particles (0.5 microns or larger) per
cubic foot of air

Air volume (at inlet)

15.36 cubic meters per minute, average (542.5 cubic feet
per minute, average)

Altitude
Operating

Sea level to 2400 meters (7892 feet); maximum allowable
operating temperatures are reduced by a factor of
+1.8°C/1000 meters (+1°F/1000 feet) for operation above
sea level

Nonoperating

300 meters (984 feet) below sea level to 7500 meters
(24,600 feet) above sea level (actual or effective by means
of cabin pressurization)

NOTE
Specifications listed in this table are recommended environmental ranges to optimize equipment
performance and reliability.

Tables 1–5 and 1–6 list the electrical specifications for 120 Vac and 240 Vac RA90/RA92/H9643
cabinet systems. Table 1–7 lists the electrical specifications by model.
Table 1–5 RA90/RA92/H9643 Cabinet System Electrical Specifications for 120 Vac
Characteristic

Specification

Voltage nominal

120 Vac

50 Hz/60 Hz

Inrush current

235 A max.

RMS current
(steady state)

Phase A

16.9 A typical

20.1 A max.

Neutral

16.9 A typical

20.1 A max.

Ground

2.3 mA typical

Phase A

50.6 A typical

57.5 A max.

Neutral

50.6 A typical

57.5 A max.

AC plug type

NEMA L5–30P

P/N 12–11193

874–D power controller

Power consumption

1401 watts typical

1688 watts max.

Fuse or circuit breaker
(CB) rating

30 A typical

Power factor

0.70

Peak current
(steady state)

Specification

General Information 1–5

Table 1–6 RA90/RA92/H9643 Cabinet System Electrical Specifications for 240 Vac
Characteristic

Specification

Voltage nominal

240 Vac

50 Hz/60 Hz

Inrush current

221 A max.

RMS current
(steady state)

Phase A

7.3 A typical

8.7 A max.

Neutral

7.3 A typical

8.7 A max.

Ground*

3.9 mA typical

Phase A

18.4 A typical

21.9 A max.

Neutral

18.4 A typical

21.9 A max.

AC plug type

IEC 309 320–P6W

P/N 12–14379–03

874–F power controller

Power consumption

1359W typical

1627 watts max.

Fuse or CB rating

15 A typical

Power factor

0.78

Peak current
(steady state)

Specification

*WARNING: High leakage current — earth connection is essential before connecting power.

Table 1–7 RA90/RA92 Disk Drive Electrical Specifications by Model
Input Current (Amps)
Disk Drive

Nominal
Voltage1

Start-up
Current

PH1

Neutral

Power
Dissipation

BTUs/Hour
[Kj/Hour]2

RA90/RA92

120 volts

5.0

3.4

281 Watts

960

RA90/RA92

240 volts

2.35

1.45

271 Watts

[976]

1 The RA90/RA92 disk drive is not line frequency dependent.

Currents are for nominal voltages of 120 Vac phase to
neutral or for 240 Vac phase to neutral. Nominal voltages of 101 Vac and 220 Vac will have proportionately higher phase
currents, by the ratio of 120/101 or 240/220, to the currents specified in this table.
2 Bracketed figure in this column indicates kilojoules per hour.

1.3 Thermal Stabilization
Thermal stabilization prevents temperature differences between the disk drive and its environment
from damaging the disk drive’s components.
CAUTION
The thermal stabilization procedure is mandatory. Do not open the moisture barrier bag
until after the thermal stabilization period is complete.
Prior to installation, the RA90/RA92/H9643 cabinet system and/or RA90/RA92 add-on disk drive
must be stored at a temperature of 60 degrees F (16 degrees C) or higher for a minimum of 24
hours. This equipment may be stored either in the computer room or in another storage room
under controlled temperature conditions. If stored in another storage room, the equipment must
remain for an additional hour in the computer room in which it will be installed.
After the thermal stabilization criteria have been met, carefully cut and remove the moisture
barrier bag. Proceed with the installation.

1–6 General Information

1.4 Unpacking and De-Skidding the RA90/RA92/H9643 Cabinet
System
Refer to the H9643 Cabinet System User Guide for RA90/RA92/H9643 cabinet system unpacking
and de-skidding procedures. Procedures for adjusting the leveler feet are also contained in that
manual.
After the cabinet system has been installed, refer to Chapter 3 for instructions on cabinet system
power-up.

1.5 Unpacking the RA90/RA92 Add-On Disk Drive
This section describes the procedure for unpacking an RA90/RA92 add-on disk drive. Disk drive
preparation and installation procedures are discussed in Chapter 2.
The part number for an RA90/RA92 add-on disk drive is RA90–NA/RA92–NA. After receiving the
RA90–NA/RA92–NA add-on disk drive, check packaging for external damage. Read and save any
packing information. Keep all packing material and receipts in the event of equipment damage or
difficulties. Refer to Figure 1–2 and unpack the RA90–NA/RA92–NA as follows:
1. Remove the shipping straps.
2. Open the shipping container.
3. Remove (and save) the packing material surrounding the disk drive.
4. Remove the manuals.
5. Lift the disk drive from the shipping container.
WARNING
Do not use the cardboard handles to lift the disk drive from the shipping container.
Injury to personnel or damage to equipment could occur if the cardboard handles are
used for this purpose.
6. Remove the small plastic bag containing the drive-to-cabinet hardware located under the disk
drive.
7. Remove the moisture barrier bag from the disk drive.
CAUTION
It is important to adhere to the thermal stabilization procedure described in
Section 1.3 prior to removing the moisture barrier bag. Failure to do so may result in
damage to the equipment.
8. Set the disk drive on an anti-static work surface.

1.5.1 RA90/RA92 Add-On Kit Contents
The contents of the RA90–NA/RA92–NA add-on shipping container are shown in Figure 1–2.
Table 1–8 describes the contents of the small plastic bag in the shipping container. Verify that all
hardware is present before beginning the RA90/RA92 add-on disk drive installation.
After verifying the contents of the RA90/RA92 add-on kit, turn to Chapter 2 for add-on disk drive
preparation and installation procedures.

General Information 1–7

BARRIER
BAG

CONTAINER

MANUALS

PLASTIC BAG
CONTAINING
HARDWARE

RA90/RA92
DISK
DRIVE

DESICCANT

OCP

SHIPPING
STRAPS

CXO-2067D_S

Figure 1–2

RA90–NA/RA92–NA Add-On Shipping Container Contents

1–8 General Information

Table 1–8 RA90–NA/RA92–NA Add-On Kit Contents
P/N

Quantity

Description

RA90–NA/RA92–NA

RA90/RA92 disk drive

99–06557–10

Plastic bag

90–00039–27

10–32 x 7/16 screws, flat, Phillips, for chassis stabilizer bracket
holes in top of disk drive

90–00063–37

10–32 x 3/8 screws, pan-head, Phillips, for chassis retainer
bracket side holes into disk drive

74–32804–01

RA90/RA92 chassis retainer bracket

90–00063–39

SA600–xx/SA800–xx screws (not needed for this product, discard)

EK–RA90H–IN–002

RA90/RA92/H9643 Cabinet Installation Guide

1.6 Repackaging Equipment for Storage or Shipment
Should it be necessary to repackage equipment for storage or shipment, use the original shipping
containers in addition to the new materials listed in Table 1–9.
Table 1–9 Repackaging Materials
RA90/RA92 Add-On Disk Drive

RA90/RA92/H9643 Cabinet System

Item

Quantity

P/N

Quantity

P/N

Moisture barrier bag

9908507–01

9908191–05

Barrier laminate

N/A

9908190–01

Desiccant

9906086–21

PE bag

N/A

9906104–20

Waterproof tape

As req’d

9908258–01

As req’d

9908258–01

1.6.1 Repackaging the RA90/RA92 Add-On Disk Drive
Use the following procedure to repackage the RA90/RA92 add-on disk drive:
1. Insert the add-on disk drive into the moisture barrier bag.
2. Insert two bags of desiccant into the moisture barrier bag, under the add-on disk drive.
3. Fold the moisture barrier bag and seal it using the waterproof tape listed in Table 1–9.
4. Repackage the bagged add-on disk drive in the original foam and packing material, place it in
the shipping container, and put the container on the original shipping pallet.
5. Obtain strapping material from the shipping department or carrier. Secure the shipping
container to the pallet.

General Information 1–9

1.6.2 Repackaging the RA90/RA92/H9643 Cabinet System
Use the following procedure to repackage the RA90/RA92/H9643 cabinet system:
1. Place the barrier laminate on top of the original cushioned shipping pallet, matching front to
front.
2. Using the original unloading ramps, push the cabinet onto the pallet, placing the cabinet on top
of the barrier laminate, matching the front of cabinet with the front of the barrier laminate.
3. Place 10 bags of desiccant under the cabinet, between the barrier laminate and the cabinet.
4. Secure the cabinet to the original cushioned shipping pallet using the original cabinet holddown brackets and bolts. Screw the bolts through the holes of the barrier laminate and into the
T-nuts in the original pallet deck.
5. Place the anti-static bag over the top of the cabinet.
6. Place the moisture barrier bag over the top of the cabinet.
7. Fold over the moisture barrier bag and barrier laminate, then seal the bag using waterproof
tape.
8. Repack the cabinet using the original carton, cover, and shipping material.
Refer to the H9643 Cabinet System User Guide for further details.

2
Preparation and Installation
This chapter describes the procedures for installing an RA90/RA92 disk drive in an H9643 cabinet.
Procedures for using the Digital lifting device and removing and replacing the cabinet front bezels,
RA90/RA92 operator control panels (OCPs), cabinet rear panel, cabinet top cover, and cabinet kick
plate are described. Finally, internal Standard Disk Interface (SDI) cable and power cable routing
and connections are included.

2.1 Site Preparation and Planning
Site preparation and planning are necessary before installing an RA90/RA92/H9643 cabinet
system or RA90/RA92 add-on disk drive. The focus of this manual is the installation of additional
RA90/RA92 disk drives in an existing H9643 cabinet system; therefore, much of the site preparation
and planning should be complete. However, it will be necessary to plan for the added weight and
power requirements of additional RA90/RA92 disk drives. It is recommended that ac power wiring
for the computer system be checked to determine adequate capacity for expansion. The wiring used
by Digital in this product conforms to Underwriter’s Laboratory (UL) and Canadian Standards
Association (CSA) standards.
To prevent damage to equipment and personnel, ensure power sources meet the specifications
required for this equipment. For product specifications, refer to Chapter 1.
The RA90/RA92/H9643 cabinet system will arrive at the site ready for installation. Check the
RA90/RA92 voltage selector switches to ensure the voltage of each RA90/RA92 is set correctly for
the site’s power. Refer to Chapter 3 if voltage setting changes are necessary.
WARNING
Hazardous voltages are present in this equipment. Installation and service must be
performed by trained Digital Customer Services personnel. Bodily injury or equipment
damage may result from incorrect servicing.

2.2 RA90/RA92/H9643 Cabinet System Installation
Refer to the H9643 Cabinet System User Guide for cabinet unpacking and de-skidding procedures.
To install the RA90/RA92/H9643 cabinet system, use the following procedure:
1. After following the thermal stabilization procedure described in Chapter 1, move the cabinet
into position within the computer room.
CAUTION
It is important to adhere to the thermal stabilization procedure described in
Section 1.3. Failure to do so may result in damage to the equipment.
2. Before applying power to the system, ensure the RA90/RA92 voltage selector switches have
been set correctly for the site’s voltage requirements. Refer to Section 3.3.

2–1

2–2 Preparation and Installation

3. Remove the cabinet rear access panel using the procedure described in the H9643 Cabinet
System User Guide.
4. The internal SDI cables have already been connected to the RA90 disk drives and the cabinet
I/O bulkhead panel at the factory. The disk drive power cords have also been connected to
the RA90 rear panel and the 874 power controller (Section 2.5). The internal SDI cables and
disk drive power cords for RA92 disk drives are shipped with the disk drives and must be
connected:
•

Install the internal SDI cables connectors to Port A and Port B connections at the rear of
the RA92 disk drive and to the cabinet I/O bulkhead panel.

•

Install the disk drive power cord to the rear of the RA92 disk drive and the 874 power
controller. Ensure all cables and power cords are seated properly.

5. Connect the external SDI cables from the cabinet I/O bulkhead panel to the host system I/O
panel.
6. Plug the 874 power controller power cable into the proper wall outlet.
7. Set the 874 power controller remote/off/local bus switch (marked A/O/B on the power controller
front panel) to the proper position. Refer to Chapter 3.
8. Turn on the power controller circuit breaker. Perform the power-up and acceptance testing
procedures in the RA90/RA92 Disk Drive User Guide to complete the installation.

2.3 Required Hardware for RA90/RA92 Add-On Disk Drive Installation
The disk drive mounting guide rails have been installed at the factory for all levels in the original
cabinet configuration. The RA90/RA92 disk drive mounting hardware will be located in two places:
in the RA90/RA92 add-on shipping container and attached to the front of the cabinet frame. Before
proceeding with the RA90/RA92 add-on installation, ensure all add-on disk drive and cabinet
hardware is available. Refer to Section 2.3.1.

2.3.1 Hardware Checklist
Following is a complete list of hardware needed to install and secure the RA90/RA92 disk drive in
the cabinet (Figure 2–1):
1. RA90–NA/RA92–NA hardware:
•

Chassis retainer brackets (2), for attaching the RA90/RA92 disk drive to the cabinet frame.

•

Short 10-32 x 3/8 pan-head Phillips sems screws (4), two screws for each chassis retainer
bracket (for holes on the side of the RA90/RA92 disk drive).

•

Short 10-32 x 7/16 flat-head Phillips screws (2), for attaching the chassis stabilizer bracket
to the top of the RA90/RA92 disk drive. Caution: It is important to use the correct
screws here, to avoid damage to disk drive modules.

2. H9643 cabinet hardware:
•

Long 10-32 x 5/8 pan-head Phillips sems screws (2), one for each retainer bracket (for
drive-to-frame connection, located on the cabinet frame).

•

Chassis stabilizer bracket (1), one per drive for disk drive positions 2, 3, 4, and 5. This
bracket will be attached to the cabinet frame with two 10-32 x 5/8 hex serrated screws.

•

Nylon washers will be located in the bottom hole of the grille (bezel) mounting bracket
hardware stack-up for disk drive positions without RA90/RA92 disk drives. The nylon
washer resides between the grille mounting bracket and the cabinet frame. These nylon
washers will be discarded when the RA90/RA92 chassis retainer brackets are installed.

Preparation and Installation 2–3

CHASSIS
STABILIZER
BRACKET

BEZEL
MOUNTING
BRACKET
10-32 X 5/8
PAN-HEAD
PHILLIPS
SCREWS
NYLON
WASHER

10-32 X 7/16
FLATHEAD
PHILLIPS
SCREW

10-32 X 5/8
SERRATED
HEX-HEAD
SCREW

DRIVE
FRONT

10-32 X 3/8
PAN-HEAD
SCREW
BEZEL
CHASSIS
RETAINER
BRACKET

WASHER
CXO-2727A

Figure 2–1

Installing Disk Drive/Cabinet Hardware, Front View

2.4 RA90/RA92 Add-On Disk Drive Installation
Unpack the RA90/RA92 add-on disk drive and complete the thermal stabilization per the procedures
in Chapter 1. Ensure all add-on disk drive and cabinet hardware is available before beginning
installation procedures. Refer to Section 2.3.1.
The following sections describe the RA90/RA92 add-on disk drive installation tasks.

2–4 Preparation and Installation

2.4.1 RA90/RA92 Add-On Disk Drive Order Sequence for H9643 Cabinet
When installing additional RA90/RA92 disk drives in an RA90/RA92/H9643 cabinet system, disk
drives must be added in a specific sequence to ensure cabinet stability. Working from the front of
the cabinet, install the first add-on disk drive in disk drive position 1 (center level), the second in
disk drive position 2 (bottom level), and so on. Refer to Figure 2–2.
WARNING
Failure to adhere to the disk drive add-on order sequence can cause cabinet instability,
resulting in damage to equipment and/or personnel.

DRIVE 4

DRIVE 5

DRIVE 1

DRIVE 0

DRIVE 3

DRIVE 2

CXO-2725A

Figure 2–2

RA90/RA92/H9643 Cabinet System

The procedures for installing an RA90/RA92 add-on disk drive depend on the disk drive position
and cabinet level in which the RA90/RA92 add-on disk drive is being installed. The hardware
differences are discussed in the following list. In all cases, the disk drive installation procedures
describe installation from the front of the cabinet.

Preparation and Installation 2–5

1. Upper Level Disk Drive Installation
When installing an RA90/RA92 add-on disk drive in the left-hand, disk drive position 4 of the
cabinet, it is necessary to remove the cabinet top cover. The drive chassis stabilizer bracket
cannot be removed from the frame and attached to the upper level disk drives without first
removing the cabinet top cover (refer to Section 2.4.6).
Each upper level disk drive is supported by two chassis retainer brackets (top and bottom), one
chassis stabilizer bracket, and two (top and bottom) factory-installed rear lock-down brackets
with one U-clip each. Detailed instructions for removing/installing this hardware are found in
Sections 2.4.9 and 2.4.10.
NOTE
An RA90/RA92/H9643 cabinet system with only one RA90/RA92 disk drive in disk drive
position 5 will have a 25-pound stabilizer plate (weight) attached to the underside of
the upper cabinet H-stiffener.
2. Center Level Disk Drive Installation
When installing an RA90/RA92 add-on disk drive in the center level of the cabinet (disk
drive position 0 or 1), each disk drive is supported by two chassis retainer brackets (top and
bottom), and two factory-installed rear lock-down brackets (top and bottom) with one U-clip
each. Detailed instructions for removing/installing this hardware are in Sections 2.4.9 and
2.4.10.
Chassis stabilizer brackets are not used for center level disk drive support in this cabinet.
3. Lower Level Disk Drive Installation
Before installing an RA90/RA92 add-on disk drive in the lower level of the cabinet (disk drive
position 2 or 3), it will be necessary to remove the cabinet kick plate (Section 2.4.7). Each lower
level disk drive is supported by two chassis retainer brackets (top and bottom), one chassis
stabilizer bracket, and two (top and bottom) factory-installed rear lock-down brackets with one
U-clip each. Detailed instructions for removing/installing this hardware are in Sections 2.4.9
and 2.4.10.

2.4.2 Electrostatic Discharge
The electrostatic discharge (ESD) grounding strap for the RA90/RA92/H9643 cabinet system is
attached to the rear bustle inside the rear panel of the cabinet.
WARNING
Do not attempt the following procedures unless you have taken proper precautions
against ESD. Wear an ESD grounding strap with the clip end securely connected to
a known grounding point while removing the RA90/RA92 OCP or other ESD-sensitive
components.

2–6 Preparation and Installation

2.4.3 Removing and Replacing the Cabinet Front Bezels
Remove the cabinet front bezel as follows (Figure 2–3):
1. Grasp the lower edge of the bezel, and place your fingers in the finger cutouts (lower edge).
2. Lift up and pull forward. The top of the bezel should rock against the two rubber bezel bumpers
attached to the cabinet frame.
NOTE
Take care not to push the adjacent OCP out of place with the top edge of the bezel during
bezel removal. The operating RA90/RA92 disk drive may power down if this occurs.

TOP COVER

PREFILTER
OCP

BEZEL
CONNECTOR
CAP

BEZEL
PREFILTER
CLIP

CXO-2726A

Figure 2–3

Removing Bezel, OCP, Bezel Connector Cap

To replace the cabinet front bezel (Figures 2–1 and 2–3):
1. Set the lower edge of the bezel in place, aligning the slots in each bottom corner of the bezel
over the bottom tabs of the clear plastic grille mounting brackets.
2. Snap the upper portion of the bezel in place, pushing the bezel top into the top tabs of the clear
plastic grille mounting brackets.
The bezel contains a prefilter (P/N 12–13121–33) held in place with six prefilter clips (P/N 90–
09748–00). Ensure prefilter clips are properly seated before reinstalling the bezel after disk drive
installation.

Preparation and Installation 2–7

2.4.4 Removing and Replacing the RA90/RA92 OCP
To remove the RA90/RA92 OCP:
1. Grasp both sides of the OCP and pull straight out.
2. Set OCP aside until disk drive installation is complete.
To replace the RA90/RA92 OCP:
1. Grasp both sides of the OCP.
2. Align the connector on the back of the OCP with the socket on the RA90/RA92 disk drive.
3. Push the OCP gently into place, ensuring that the plastic tabs and spring clip on the OCP are
seated in the bezel casting slots on the RA90/RA92 disk drive.
NOTE
The OCP should be at the top of the disk drive. If it is at the bottom, remove the
OCP by gently pulling it straight out. Turn the OCP around and replace it in the
top position. (There may be a bezel connector cap over the top OCP connector slot.
If so, remove the cap before trying to replace the OCP. Move the cap to the bottom
connector slot, as shown in Figure 2–3).

2.4.5 Removing and Replacing the Cabinet Rear Access Panel
Refer to the H9643 Cabinet System User Guide for cabinet rear access panel removal and
replacement procedures.

2.4.6 Removing and Replacing the Cabinet Top Cover
Remove the cabinet top cover using the following procedure:
1. At the rear of the cabinet, remove the two serrated, truss-head, Phillips screws from the under
side of the rear bustle. Save these screws.
2. Lift the cabinet top cover up, then slide it back approximately 1 to 1–1/2 inches. This will
enable the metal tabs on the cover to clear the cabinet H-stiffener slots.
3. Carefully remove the top cover from the cabinet and store in a safe place to avoid damage to
the painted finish.
Replace the cabinet top cover using the following procedure:
1. Lift the top cover over the cabinet and rest it on the H-stiffener.
2. Align the top cover metal tabs with the two slots in the top of the cabinet H-stiffener.
3. Slide the metal tabs into the slots.
4. Push the top cover forward until the screw holes in the top cover align with the holes in the
rear bustle. The top cover should now be flush with the cabinet side panel profiles (top and
front).
5. Insert and secure the two previously removed truss-head screws.

2–8 Preparation and Installation

2.4.7 Removing and Replacing the Cabinet Kick Plate
When installing or removing RA90/RA92 disk drives in the two lower disk drive positions (positions
2 and 3), you must remove the cabinet front kick plate to install the chassis stabilizer brackets.
Remove the cabinet kick plate using the following procedure (Figure 2–4):
1. Remove the two 10/32 pan-head Phillips sems screws that secure the kick plate to the cabinet
frame. Hold the kick plate with one hand after removing the second screw, or it will fall to the
floor.
2. Place the kick plate and its hardware in a safe place.
Replace the cabinet kick plate using the following procedure (Figure 2–4):
1. Slide the pointed tabs on the back of the kick plate into the cabinet mounting bracket holes at
the base of the frame. Note the kick plate tabs slide up into the holes, as opposed to seating
down into the holes.
2. Push the kick plate flush to the frame, then reinsert the two 10/32 pan-head Phillips sems
screws.
3. Tighten the screws.

2.4.8 Stabilizer Plate (Weight)
To ensure the stability of a cabinet that contains a single RA90/RA92 disk drive (RA90–CA/RA92–
CA or RA90–CD/RA92–CD) in disk drive position 5, a 25-pound stabilizer plate has been installed
at the factory. The stabilizer plate is attached to the underside of the upper cabinet H-stiffener,
and is fastened to the upper front and rear cabinet crossbars. It is not necessary to remove the
stabilizer plate after installing additional RA90/RA92 add-on disk drives.

2.4.9 Installing Cabinet Hardware
After removing the bezel, OCP, and cabinet rear panel, prepare the cabinet hardware for disk drive
installation as follows:
1. Remove the two clear plastic grille mounting brackets. The brackets are designated as left-hand
(P/N 74–37919–02) and right-hand (P/N 74–37919–01). Each bracket is secured with two 10-32
x 5/8 pan-head Phillips sems screws. Save these brackets and screws.
NOTE
A nylon washer is located in the hardware stack-up of the bottom hole of the
clear plastic grille mounting bracket. The nylon washer resides between the grille
mounting bracket and the cabinet frame. The nylon washer maintains spacing for
bezel alignment until the add-on disk drive retainer bracket is installed. The nylon
washer can be discarded after the RA90–NA/RA92–NA installation.
2. If installing an upper-level disk drive, remove the cabinet top cover. Refer to Section 2.4.6.
3. Remove the two 10-32 x 5/8 hex serrated screws of the associated cabinet stabilizer bracket
from the cabinet frame.

Preparation and Installation 2–9

GUIDE RAIL

DRIVE
REAR

RIGHT SIDE
MOUNTING
RAIL

CABINET
FRONT

RA90/RA92
DRIVE
CHASSIS
CHASSIS
STABILIZER
BRACKET

KICK
PLATE

10-32 X 5/8
PAN-HEAD
PHILLIPS
SEMS SCREWS
MOUNTING
BRACKET HOLE
CXO-2728B

Figure 2–4

Cabinet Rails and Kick Plate (Front)

2–10 Preparation and Installation

4. Attach the cabinet stabilizer bracket to the top of the add-on disk drive with two 10/32 x 7/16
flat-head Phillips screws (from the plastic bag that came with the RA90–NA/RA92–NA disk
drive add-on kit).
NOTE
The chassis stabilizer bracket position corresponds to the disk drive position and
level the disk drive will occupy. The chassis stabilizer brackets for disk drive
positions 4 and 5 attach to the cabinet frame crossbar above the disk drives. The
chassis stabilizer brackets for disk drive positions 2 and 3 attach to the cabinet frame
crossbar below the disk drives. Disk drive positions 0 and 1 do not require chassis
stabilizer brackets.
5. Attach the top and bottom chassis retainer brackets (L-shaped brackets) to the side of the disk
drive using the short 10-32 x 3/8 pan-head Phillips sems screws (from the plastic bag that is
part of the RA90/RA92 disk drive add-on kit). Two screws will be used for each retainer bracket.

2.4.10 Placing the RA90/RA92 Add-On Disk Drive Into the Cabinet
The RA90/RA92 add-on disk drive and the H9643 cabinet system hardware are now ready for disk
drive installation. Refer to Figure 2–4 while performing the installation procedure.
1. Turn the disk drive so the side grooves are facing toward the cabinet guide rails. (The disk
drive may look upside down at this point; this will be rectified when the OCP is reinstalled to
correspond with the disk drive orientation.)
2. Lift and move the disk drive into place using a Digital lifting device (P/N FC–10117–AC), and
the following procedure:
CAUTION
If a lifting device is not available, two people are needed to install the RA90/RA92
disk drive into the cabinet. The RA90/RA92 disk drive weighs 31.8 kilograms (70.1
pounds) and must be handled with care. Manual installation is not recommended.
a. Place the lifting device in an upright position with the lift platform facing away from the
operator.
b. Ensure sufficient open space for extending the lift platform.
c.

Support the top of the lifting device with one hand. With the other hand, raise the lift
platform holding latch from the cross bar to release it.

d. Lower the lift platform to its service position.
e.

Check the hinges at the base of the lift platform to ensure they are fully extended and
locked.

Release the safety strap and move it to one side so it will not become tangled.

g. Move the lifting device to the disk drive and center the lift platform under the disk drive.
Slide the disk drive to the back of the lift platform.
h. Secure the safety strap around the disk drive.
i.

Lower the lift platform to no more than 12 inches off the floor.

Transport the disk drive to the cabinet.

Preparation and Installation 2–11

k. Crank the lift platform up to the disk drive installation level in front of the cabinet.
NOTE
Ensure the internal SDI cables and drive power cables are clear for disk drive
installation.
l.

Remove the safety strap from the disk drive and slide the drive into the cabinet, ensuring
that the grooves on the side of the disk drive align with the cabinet guide rails.

m. Move the lifting device away from the cabinet. The cabinet guide rails will support the
weight of the disk drive.
n. Slide the disk drive completely into the cabinet until the chassis stabilizer bracket on the
drive meets with the holes in the cabinet frame.
3. Align the hole in the upper chassis retainer bracket with the hole in the cabinet frame
(Figure 2–1).
4. Insert the 10-32 x 5/8 pan-head Phillips sems screw (from the add-on kit bag) through the upper
chassis retainer bracket hole and into the frame. Screw down, but do not tighten at this time.
5. Align the previously removed, clear plastic grille mounting bracket(s) to the frame. Loosely
secure the bracket to the frame by placing the pan-head screw into the top bracket hole.
6. Align the holes in the lower chassis retainer bracket (L-shaped bracket) and the clear plastic
grille mounting bracket with the hole in the cabinet frame (Figure 2–1). Insert the 10-32 x
5/8 pan-head Phillips sems screw (previously removed) through both parts (clear plastic grille
mounting bracket and the chassis retainer bracket) and secure, but do not tighten, to the
cabinet frame.
7. If installing disk drives in upper or lower levels, align the two holes in the chassis stabilizer
bracket with the threaded holes in the cabinet (H-stiffener) frame (above drives 4 and 5, below
drives 2 and 3).
8. Insert the two 10-32 x 5/8 hex serrated screws through the chassis stabilizer bracket and into
the frame.
9. Tighten all screws.

2.5 SDI Cable and Power Cord Routing and Connections
The internal SDI cables and disk drive power cords have been factory-installed and routed for all
disk drive positions. The SDI cables have been connected to the cabinet I/O bulkhead panel. The
power cords have been connected to the rear panel of the 874 power controller. Refer to Figures 2–5
and 2–6.
Use the following procedure to connect the internal SDI cables and power cords at the rear of the
cabinet:
1. Go to the rear of the cabinet. The disk drive connections for both internal SDI cables and power
cords are coiled and tie-wrapped at the factory. Carefully cut the cable tie, then connect the SDI
cable connectors to the Port A and Port B connections on the rear of the RA90/RA92 disk drive.
NOTE
An RA90/RA92 I/O bulkhead port label is affixed to the rear panel of the cabinet. The
port label indicates the positions for SDI cable connections.

2–12 Preparation and Installation

CABLE
TROUGH

CABLE
TROUGH
A
5

B
B

DISK DRIVE
POWER CABLE

A
0

B
B

A
2

B
B

NOTE: HEAVY LINES INDICATE INTERNAL SDI CABLES.
CXO-2729A

Figure 2–5

SDI Cables and Power Cords Routing, Rear View

Preparation and Installation 2–13

INTERNAL
SDI CABLE
DISK DRIVE
POWER CORD
A
B

4
B
A

A
B

1
B
A

A
B

3
B
A

0
5

A
B

A
B
A
B

1
3

A
B
A
B

A
B

CXO-2730A

Figure 2–6

SDI Cables and Power Cords Connections, Rear View

2–14 Preparation and Installation

2. Connect each disk drive power cord to the ac power input on the rear of the RA90/RA92 disk
drive, near the RA90/RA92 circuit breaker. Refer to Figure 2–7.
3. Before applying power to the cabinet, turn to Chapter 3 for information about the 874 power
controller switches, RA90/RA92 voltage selector switch, and the RA90/RA92 circuit breaker.
DRIVE
REAR

DRIVE
CIRCUIT
BREAKER

AC POWER
INPUT

VOLT

VOLTAGE
SELECTOR
SWITCH

120V
OR
240V

POWER
SUPPLY
CXO-2135C

Figure 2–7

RA90/RA92 Voltage Selector Switch/Circuit Breaker

3
Applying Power
This chapter describes the RA90/RA92 disk drive switches and 874-series power controller power
connector configurations encountered when installing an RA90/RA92 disk drive in an H9643
cabinet. Brief descriptions of the 874–D/F power controller switches, the RA90/RA92 voltage
selector switch, and the RA90/RA92 circuit breaker are included.
This chapter does not discuss fault codes or error conditions incurred at power-up. Please reference
RA90/RA92 disk drive specific manuals for such information.

3.1 Power Connector Configurations
During RA90/RA92 add-on disk drive installation, several power connector configurations will be
encountered. Power connector configurations from the RA90/RA92 disk drive to the power controller
and from the power controller to the wall outlet are shown in Figure 3–1.

3.2 874–D/F Power Controller
The 874-series power controller has three switched duplex outlets and one unswitched duplex outlet
(a total of eight outlets). All variations include an ac line filter. The 874 power controller is 19-inch
rack-mountable.
The 874-series power controller serves four functions:
a. Controls large amounts of power from a remote source
b. Provides a convenient ac power distribution point for multiple units
c.

Protects equipment from some electrical disturbances

d. Disconnects power (in case of overload) and provides circuit breaker protection
WARNING
High leakage current — earth connection is essential before connecting power. Verify
the integrity of the earth ground terminal of the power receptacle before attaching the
cabinet power controller cable and applying power. If the continuity of the terminal-toground cannot be verified, provide supplemental grounding to the cabinet system.
Figures 3–2 and 3–3 show the front and rear views of the 874-series power controller. The
RA90/RA92/H9643 cabinet system utilizes the 874–D and 874–F models.

3–1

3–2 Applying Power

POWER CORDS GOING TO 874 POWER CONTROLLER
120V 50-60HZ
POWER CORD
DEC NO. A-PS-1700083-23
PLUG - POWER CONTROLLER END

220/240V 50-60HZ
POWER CORD
DEC NO. A-PS-1700083-24
PLUG - POWER CONTROLLER END

120/240V 47-63HZ
10A/6A
POWER CORD
DEC NO. A-PS-1700442-18 OR
A-PS-1700442-19
RECEPTACLE - DRIVE END

PLUGS GOING TO WALL OUTLET (FROM 874 CONTROLLER)
120V 60HZ
24A
1-PHASE

NEMA NO. L5-30P
DEC NO. 12-11193
(874-D)

220/240V 50-60HZ
16A
1-PHASE
IEC 309 320-P6W
DEC NO. 12-14379-03
(874-F)

CXO-2731B

Figure 3–1

Power Connector Configurations

Applying Power 3–3

POWER
CONTROLLER
CIRCUIT
BREAKER
(SEE NOTE)

POWER
LAMP

J10

J11

J12

I
O
A

OFF
O

POWER
CORD

CORD
OPENING

B
LOCAL

REMOTE

REMOTE/OFF/LOCAL
SWITCH
NOTE: CIRCUIT BREAKER OFF POSITION (0) IS DOWN, ON POSITION (1) IS UP.
CXO-2732A

Figure 3–2

874 Power Controller, Front View

CXO-2733A

Figure 3–3

874 Power Controller, Rear View

3–4 Applying Power

3.2.1 874 Power Controller Circuit Breaker
The 874 power controller circuit breaker has two positions: 0 and 1. The 0 position represents OFF
and the 1 position represents ON.

3.2.2 874 Power Controller Remote/Off/Local Switch
The remote/off/local switch provides a means for controlling the power state of the 874-series power
controller and/or RA90/RA92/H9643 cabinet system. The remote/off/local switch is used to turn the
switched power on and off in a predictable manner.
WARNING
The remote/off/local switch is not to be used as an emergency power off function, or as
an off device for the purpose of servicing equipment. It does not prevent fire, electric
shock, or injury, and does not function as a safety interlock. The remote/off/local switch
does not remove power from all of the output receptacles. Voltage may be present at the
unswitched receptacles, and equipment connected to the unswitched receptacles may
remain energized.
The remote/off/local bus switch is marked A, O, and B on the power controller front panel, where A
is remote on, O is off, and B is local. Refer to Figure 3–2.
The site power control bus can be connected, via cables, using the four parallel-connected, three-pin
connectors (J9, J10, J11, and J12) located on the front panel of the 874 power controller. These
cables are not provided with the 874-series power controller; they must be ordered separately.

3.2.3 874–F Power Controller Cable (Cordage)
The 874–F power controller requires power connector cable replacement to accommodate
international power requirements and power connector plug configurations. Table 3–1 lists the
cable (cordage) part numbers for some countries using 220/240 Vac power applications.
Table 3–1 874–F Power Controller 220/240 Vac Power Cable Variations
P/N

Country

17–01255–01

Europe, U.S., Japan (IEC 309 plug and cordage)

17–00199–10

Central Europe (Schuko-plug)

17–00198–05

Australia

17–00364–06

Italy

17–00209–05

United Kingdom

NOTE
All 874–F power controllers are shipped with P/N 17–01255–01 power cables. If the
supplied cable requires replacement, the installation team will order a suitable version
prior to equipment arrival. The original cable may then be replaced and discarded.

Applying Power 3–5

3.3 RA90/RA92 Voltage Selector Switch
Before applying power to the RA90/RA92 disk drive(s), ensure the proper operating voltage
(100/120V or 220/240V) has been selected for your area of operation. Refer to Figure 3–4. Use
the following procedure to select the proper RA90/RA92 disk drive operating voltage:
1. Locate the line voltage selector switch. (The line voltage selector switch is located on the
RA90/RA92 rear panel, to the right of the circuit breaker, when facing the rear of the drive.
This switch can be seen through holes in the RA90/RA92 rear power supply panel.)
2. Using a non-conductive pointed object, slide the switch into the voltage selection position
applicable to your site.
DRIVE
REAR

DRIVE
CIRCUIT
BREAKER

AC POWER
INPUT

VOLT

VOLTAGE
SELECTOR
SWITCH

120V
OR
240V

POWER
SUPPLY
CXO-2135C

Figure 3–4

RA90/RA92 Voltage Selector Switch/Circuit Breaker

3–6 Applying Power

3.4 RA90/RA92 Circuit Breaker
The RA90/RA92 circuit breaker is located at the rear of the RA90/RA92 disk drive, near the center,
on the RA90/RA92 power supply. Refer to Figure 3–4.

3.5 Applying Power to the RA90/RA92/H9643 Cabinet System
After all RA90/RA92 disk drives have been installed in the cabinet, and all cabling has been
connected, use the following procedure to apply power to the cabinet and its components:
1. Ensure all RA90/RA92 disk drives are switched to the proper voltage for your site (RA90/RA92
voltage selector switches).
2. Set the remote/off/local bus switch on the 874 power controller (marked A/O/B on the front
panel) to the proper position (Figure 3–2).
3. Ensure the disk drive and power controller circuit breakers are in the OFF position.
4. Plug the cabinet power cable into the wall outlet.
5. Turn the 874 power controller circuit breaker to the ON (up) position.
6. Turn the circuit breaker for each RA90/RA92 disk drive to the ON position.
7. Using the RA90/RA92 Disk Drive User Guide, perform the disk drive power-up sequence and
checkout procedures.

Index
A

Add-on order sequence, 2–3

Grille (bezel) mounting brackets, 2–8

Bezel, front
removal and replacement, 2–6
Bezel connector cap, removal, 2–7

Installation
disk drive, center level, 2–5
disk drive, lower level, 2–5
disk drive, upper level, 2–5
RA90/RA92/H9643 cabinet system,
2–1

C
Cabinet installation, 2–1
Chassis retainer brackets, 2–10
Chassis stabilizer brackets, 2–8
Circuit breaker
874 power controller, 3–4
RA90/RA92 disk drive, 3–6
Contents, RA90/RA92 add-on kit, 1–6

D
Documentation, related, v

E
Electrical specifications (120 Vac),
RA90/RA92/H9643, 1–4
Electrical specifications (240 Vac),
RA90/RA92/H9643, 1–4
Electrostatic discharge, 2–5
Environmental limits (max.),
RA90/RA92/H9643, 1–3
Environmental operating range
(recommended), RA90/RA92/H9643,
1–3

F
874–F power controller cable (cordage),
3–4

K
Kick plate, cabinet, 2–5
removal and replacement, 2–8

L
Lifting device
procedure for using, 2–10

O
OCP, removal and replacement, 2–7

P
Part number
RA90/RA92/H9643 variations, 1–1
RA90/RA92 add-on disk drive, 1–6
Physical specifications, RA90/RA92/H9643,
1–2
Power connectors, 3–1
Power control bus, 3–4
Power controller, 874, 2–2, 3–1
Power cords, 2–11
Prefilter, 2–6

R
RA90/RA92/H9643 cabinet system,
description, 1–1

Index 1

2 Index

RA90/RA92 add-on disk drive, description,
1–1
RA90/RA92 weight, 2–10
Rear access panel, cabinet
removal and replacement, 2–7
Related documentation, v
Remote/off/local switch, 874, 3–4
Repackaging
materials, 1–8
RA90/RA92/H9643 cabinet system,
1–8
RA90/RA92 add-on disk drive, 1–8

S
SDI cables, internal, 2–11
Site preparation, 2–1
Stabilizer plate (weight), 2–5, 2–8
Switches
circuit breaker, 874, 3–4
circuit breaker, RA90/RA92, 3–6

remote/off/local, 874, 3–4
voltage selector, RA90/RA92, 3–4

T
Thermal stabilization, 1–5
Top cover
removal and replacement, 2–7
Top cover, cabinet
removal and replacement, 2–5

U
Unpacking
RA90/RA92/H9643 cabinet system,
1–6
RA90/RA92 add-on disk drive, 1–6

V
Voltage selector switch, RA90/RA92, 3–4