Operations and Maintenance Guide, Second Edition - HP Integrity rx2600 Server and HP zx6000 Workstation

HP Integrity rx2600 server and HP workstation zx6000 Operation and Maintenance Guide 81
Removing and Replacing Components
Removing Memory Modules
To remove the memory modules, follow these steps:
1. Power off the server, disconnect power, LAN and telecommunications cables, and remove
the covers.
CAUTION: To ensure that memory modules are not damaged during removal or installation, power off
the server and unplug the power cord from the ac power outlet. Wait until the LED on the back of the
power supply turns off before removing memory.
2. Press down on the memory module retainer clips and lift the module out of its memory slot.
Memory Module Retainer Clips
3. If the removed memory is functional, store it in a static-free container for future use.
Replacing Memory Modules
Memory modules must be loaded in the correct order:
■ In the zx6000 workstation, DIMMs must be installed as ordered pairs of equal size. For
example, the DIMM in slot 0A must match 0B, 1A must match 1B, and so forth.
■ In the Integrity rx2600 server, DIMMs must be installed in matched quads. Four identical
DIMMs must be installed, one pair per memory cell, as listed below:
❏ 0A, 0B and 1A, 1B must match
❏ 2A, 2B and 3A, 3B must match
❏ 4A, 4B and 5A, 5B must match
This loading order must be used to enable chip spare functionality, available only on rx2600
servers.
NOTE: DIMMs match if they have the same HP part number.
■ Module sizes can be mixed, as long as DIMMs in each pair (zx6000) or quad (rx2600)
match. For example:
❏ On zx6000 workstations, it is acceptable to load a pair of 256 MB DIMMs in slots 0A
and 0B, and a pair of 1 GB DIMMs in slots 1A and 1B.