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EK-35XRN-IG-A01

November 1998

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Document:	StorageWorks Rear SCSI Mount Kit
Order Number:	EK-35XRN-IG
Revision:	A01
Pages:	6
Original Filename:

OCR Text

Compaq StorageWorks
Rear SCSI Mount Kit
(DS–SW600–XB)
This document describes how to install a rear SCSI shelf
into an Enterprise Storage Array (ESA) 10000 cabinet
using a rear SCSI mount kit (DS–SW600–XB). This shelf
is capable of holding two hubs, two external cache batteries
(ECB), and two power strips. This document also includes
procedures for installing the hubs, ECBs, and power strips
into the rear SCSI shelf.

Table 1

Rack Mount Kit Parts List (Continued)
Description

Qty

Locking Brackets (74–46439–01)

The three hubs that are compatible with this rack mount kit
include DWZZH-03, -05, and -09.
Warning Label

Power Cords:
Black
Gray

2
2

Qty

SEMS Screws:
10-32 x 3/8 in Pan Head
10-32 x 5/8 in Pan Head

4
30

U-Nuts

Cable Ties

Push-Mount Cable Ties

Adhesive-Backed Cable Ties

Rack Mount Kit Contents
Use Table 1 to verify that all mounting kit parts are
available.
Table 1

Rack Mount Kit Parts List
Description

Rear-Mount Shelf Support (70–33749–01)

CXO6246A

Note
CXO6610A

ECB Bracket (70–33750–01)

The number of cable ties provided in the
mounting kit will secure all the power cords and
ECB cables for shelf components.

CXO6609A

Compaq, the Compaq logo, and DIGITAL registered in United States Patent and Trademark Office.
StorageWorks is a trademark of Compaq Computer Corporation.
© 1998 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A.

EK–35XRN–IG. A01
November 1998

Preliminary Information

Assembling a Rear SCSI Shelf

The rear SCSI shelf rack mount installs in the rear of a ESA
1000 cabinet. Table 2 identifies:

Complete the procedure in Table 3 to assemble a rear SCSI
shelf.

•

Hole locations where u-nuts are required

Table 3

•

Cabinet rail holes for installing the upper and lower
rear-mount shelf supports

Insert three u-nuts in holes 7, 8, and 9 on both the upper
and lower rear-mount shelf supports.

•

Hole locations for connecting the ECB bracket to the
upper and lower rear-mount shelf supports

Using four (10-32 x 5/8 in) screws, secure the two
rear-mount shelf supports to the ECB bracket.

Table 2
Bracket

Mounting Holes Usage
U-Nut/Mounting Hole Locations

Upper
rear-mount
shelf
support

Cabinet rail holes 9, 10, and 11 from the
bottom

Lower
rear-mount
shelf
support

Cabinet rail holes 23, 24, and 25 from the
bottom

ECB

Rear SCSI Shelf Assembly Procedure

Upper and lower rear-mount shelf support
holes 7, 8, and 9 from the left or right

Note

CXO6607A

Turn the three bracket assembly over (upside-down),
exposing the face of shelf.

Count cabinet rail holes from the bottom to the
top, beginning with hole 1.

CXO6608A

Using six (10-32 x 5/8 in) screws, secure the front of the
ECB bracket to the upper and lower rear-mount shelf
supports.

Installing a Rear SCSI Shelf

Table 4

Complete the procedure in Table 4 to install a rear SCSI
shelf into an ESA 1000 cabinet.

Align the upper rear-mount shelf support holes with the
u-nuts installed in the cabinet rail holes 23, 24, and 25,
and secure the upper rear-mount shelf support with six
(10-32 x 5/8 in) screws.

If applicable, remove all cable ties securing cables that
may interfere with installing the shelf in the cabinet.
Ensure all power cords and data cables are clear of the
shelf installation area.

Secure the lower rear-mount shelf support with six (10-32
x 5/8 in) screws.

Reconnect and secure any cabling affected in step 1.

Bundle one black and one gray power cord together
(leaving approximately 12 inches exposed at both ends)
using an adhesive-backed cable tie.

Affixing the Warning Label

Table 4
1.

Rear SCSI Shelf Installation
Procedure

Orient the cable bundle so that the female connector ends
are directed toward the bottom of the cabinet and the male
connector ends are directed toward the top of the cabinet.

Peel off the protective cover and attach the power cord
bundle between the cabinet left inner and outer rails in the
vicinity of rail holes 23 through 25.

Repeat steps 2 through 4 for the right side of the cabinet.

Note

Rear SCSI Shelf Installation
Procedure (Continued)

Affix the “Warning, High Leakage Current” label
(CALLOUT 1) on the ECB bracket as shown in Figure 1.
Ensure the text is positioned horizontally and readable from
left to right.
Figure 1

Label
Placement

The two power cords going down the left side of
the cabinet provide power to the left hub; those
going down the right side of the cabinet provide
power to the right hub.

Insert a u-nut in the following left and right cabinet rail
holes, counting upward from the bottom: 9, 10, 11, 23,
24, and 25.

CXO6601A

Grounding the PDUs
PDUs within the cabinet must be grounded to dissipate
high-leakage current. Compaq recommends connecting a
separate grounding wire from the PDU to an electrical
ground outside the cabinet.
WARNING!
Secure a grounding wire to the rear of the
PDU with the proper hardware. The end
product user is responsible for meeting local
and national electrical codes.

CXO6600A

Installing a Hub

Installing an ECB

Complete the procedure in Table 5 to install a hub in a rear
SCSI shelf.

Complete the procedure in Table 6 to install an ECB in the
rear SCSI shelf.

Table 5

Table 6

Hub Installation Procedure

Insert two u-nuts into holes 3 and 4 from the left side of
the rear SCSI shelf upper rear-mount shelf support.

ECB Installation Procedure

Insert the first ECB (primary) in the upper opening of the
ECB bracket.

3
CXO6602A

2.
3.
4.
5.

Repeat step 1 using the lower rear-mount shelf support of
the shelf.
Orient the hub (CALLOUT 1) so that the power supplies
are located on the top and facing outward.
Slide the hub into the left-rear SCSI shelf opening until
fully seated against the stop flange.
Using two (10-32 x 5/8 in) screws, secure a locking
bracket (CALLOUT 2) above the power supplies in the two
center holes containing the u-nuts.
Repeat step 5 for the other locking bracket (CALLOUT 3)
installed below the hub devices.

Repeat steps 1 through 6 for the hub being inserted into
the right-rear SCSI shelf opening.

Connect power cords to the hub power supplies using
Table 7.

Note
The black cord connects to the top hub power
supply (primary); the gray cord connects to the
bottom hub power supply (redundant).

CXO6603A

Using a push-mount cable tie, attach the ECB cable going
along the cabinet left side to the upper rear-mount shelf
support by fastening the cable tie to the second hole from
the left.

Insert the second ECB (redundant) in the lower opening
of the ECB bracket.

Using a push-mount cable tie, attach the ECB cable going
along the cabinet right side to the upper rear-mount shelf
support by fastening the cable tie to the second hole from
the right.

Connect the ECB cables to the appropriate ECBs
(primary or redundant).

Installing a Power Strip

Table 7

Complete the procedure in Table 7 to install two power
strips (primary and redundant) on a rear SCSI shelf.

Table 7

Power Strip Installation Procedure

Power Strip Installation Procedure
(Continued)

Connect all power cords according to Figure 2.

WARNING!
Remove all power to the cabinet prior to
installing the power strips.

Align the first power strip (primary; rear location) with
the screw hole openings on the second raised
rail—located on the top and rear SCSI shelf upper
rear-mount shelf support.

To prevent the possibility of injury or death as a
result of electrical shock, always install the
power cords exactly as shown in the Figure 2.

Note
To maintain power redundancy, never connect both
power strips to the same PDU and never connect
both hub power supplies to the same power strip.
Black cords connect to the primary power strip and
primary hub power supplies. Gray cords connect to
the redundant power strip and redundant hub power
supplies.
Route power cords going from the power strips to
the left hub along the left cabinet wall, down
through the opening between the wall and rear
SCSI shelf, and out to the front of the hub. For the
right hub, route power cords the same way, but
along the right wall.

CXO6605A

Using two (10-32 x 3/8 in) screws, secure the power strip
to the shelf.

Repeat steps 1 and 2 for the second power strip
(redundant; front location) using the front raised rail on
the upper rear-mount shelf support.

Figure 2

AC Wiring Schematic
1
2

4
11

~
CXO6606A

Figure CALLOUTS Legend
1.

Primary power supply

2.
3.
4.
5.
6.

Redundant power supply
Left hub
Right hub
Gray cords
Redundant power strip
(front)

7.
8.
9.

Redundant PDU (top)
Black cords
Primary power strip
(rear)
10. Primary PDU (bottom)
11. Ground wire