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EK-MS430-IN-B01

2000

2 pages

Original

0.4MB

Document:	Memory Option Installation Card
Order Number:	EK-MS430-IN
Revision:	B01
Pages:	2
Original Filename:

OCR Text

EK–MS340–IN. B01

Open the Cabinet.
DS20 Systems

DS20E Systems

MEMORY OPTION
INSTALLATION CARD

Shut down the operating system and power down
the system.

Unplug the power cord(s).

Use this card as a quick reference to install MS340-XX
memory options in AlphaServer / AlphaStation DS20
and DS20E systems.

Remove the covers to gain access to the system
card cage. See Figure 1.

Remove the cover to gain access to the system card
cage. See Figure 2.

WARNING: CPU modules and memory modules have
parts that operate at high temperatures. Wait 2 minutes
after power is removed before touching any module.
CAUTION: Wear an antistatic wrist strap when
working on this system.
Overview
• Open the cabinet.

•

Review the configuration rules.

•

Locate the memory slots.

•

Install the memory option.

•

Verify the installation.

Unlock and open the front door.

a. Open the front bezel.

Pull the top cover latch down to release the
latch.

b. Loosen the captive screw ➊ attaching the side
panel to the chassis.

Using the groove at the rear of the top cover,
pull the cover back about two inches, and lift
it off.

c. Remove the panel with a rearward motion ➋.

Pull the card cage panel back and lift it away
from the cabinet.

Figure 2 Opening the DS20E Cabinet

Figure 1 Opening the DS20 Cabinet
Top Cover
Release Latch

Before You Begin
Keep these points in mind when installing a memory
option or replacing a memory module:

•

The four modules in a memory option must be the
same size. However, the options within a system
box can be a mix of sizes.

CAT0034A

Memory options are installed in specific slots
designated for each option.

PK1476-98

Review the Configuration Rules.
• A memory option consists of four DIMMs.

•

All four DIMMs in an option must be the same
size.

•

Convention places the largest memory option in
slots marked 0 on the system board. SeeFigure 3.
Convention also calls for other memory options to
be the same size or smaller than the first memory
option.

•

Memory options must be installed in slots
designated for each bank. The first bank goes into
slots marked 0, the second bank into slots marked
1, and so on.

Figure 3 Memory Slot Locations on the
System Board
DIMM Slots

Figure 4 Memory Card Installation

1
3
1
3
0
2
0
2

CPU 0

DIMM Slots

CPU 1

2
0
2
0
3
1
3
1

CAT0124

Locate the Memory Slots.
Figure 3 shows the location of the 16 DIMM slots in
DS20/DS20E systems. Two of the four DIMMs in
each option go above the D chips and two go below the
D chips. When installing additional memory, place
DIMMs in the four slots labeled with the same slot
number.

Verify the Installation.
• Issue the show memory command to display the
status of the system memory.
CAT0030B

Install the Memory Option.
1. If necessary, remove either CPU to access the
DIMM slots necessary for the installation.
2.

Identify the slot locations for the option you are
installing. See Figure 3

Open each memory connector by pushing the
levers outward. See. Figure 4.

Align each DIMM in the connector and press
down. The connector levers close.

Part numbers for options can be found on the Internet.
Using a Web browser, follow links to the appropriate
AlphaServer / AlphaStation DS20 and DS20E
supported options list from the URL:
http://www.digital.com/info/alphaserver/products.html