HP 9000 A-180 User Manual page 44

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A-Class Server Installation
Installing Internal Add-On Components
on one side of the card, only.DIMM is an acronym for Dual Inline Memory Module.
A DIMM has components on both sides of the card.The acronym SIMM will be
used throughout this section to refer to either SIMM or DIMM.
A-Class servers provide 8 slots for memory. These slots are labeled in pairs and are
numbered 0a, 0b, 1a, 1b, 2a, 2b, 3a and 3b. The nomenclature for a pair of SIMM
slots is 0a/b, 1a/b, 2a/b and 3a/b. The following rules govern the installation
memory in A-Class Servers.
Follow the steps below to install memory in A-Class servers.
Electrostatic Discharge Precautions.
The procedures in this section require opening the server and exposing the system to
electrostatic discharge. Always observe all electrostatic precautions when working
with components inside or out of the server. Failure to follow these precautions may
result in component damage or loss of system reliability.
Before You Do Anything...
o Power down the system.
o Unplug the server.
NOTE
Cabinet-mounted servers must be removed from the cabinet before proceeding.
o Remove the top of the server by unscrewing the knurled captive screws on each
Step 1. Document which size SIMMs are already installed and in which slots.
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Memory must be installed in SIMM pairs.
The capacity of SIMMs must be the same.
Install SIMMs with the greatest capacity in the lowest slot numbers.
Use a grounding mat and an anti-static wrist strap.
Wear the anti-static wrist strap to ensure that any accumulated electrostatic
charge is discharged from your body to ground.
side of the rear of the server. Slide the top back, lift it off, and set it aside.
Chapter 2

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