hp StorageWorks NAS e7000 v2 Maintenance and Service Guide

Removal and Replacement Procedures
41NAS e7000 v2 Maintenance and Service Guide
Additional Requirements for Single-Board Mirrored Memory Technology
In addition to the DIMM configuration requirements for advanced ECC memory, observe the
following DIMM configuration requirements when installing DIMMs for single-board
mirrored memory:
■ Install only one board. The board must be installed in memory board slot 1.
■ Bank B of memory board 1 is the mirrored bank.
■ DIMMs in the mirrored bank must be configured identically to the bank they are
mirroring. Both banks must be populated with DIMMs of the same capacity.
Note: If memory board slot 1 Bank B is not populated, the system automatically switches to
advanced ECC memory and displays an error message during POST.
Note: When configured for single-board mirrored memory, the system has no hot-plug capabilities.
Additional Requirements for Hot-Plug Mirrored Memory Technology
In addition to the DIMM configuration requirements for advanced ECC memory, observe the
following DIMM configuration requirements when installing DIMMs for hot-plug mirrored
memory:
■ Two memory boards must be installed.
■ Both memory boards must be configured identically. Corresponding banks (for instance,
bank A on the memory board in slot 1 and bank A on the memory board in slot 2) must be
populated with DIMMs of the same size and type.
Observe the following DIMM configuration requirements when performing a hot-plug
replacement:
■ Do not remove the memory board unless the Ready to Hot Plug LED is green.
■ If you replace a DIMM, the DIMM must be a PC1600 DDR SDRAM DIMM of the same
capacity as the DIMM you are replacing.
Removing a Memory Board
Caution: Electrostatic discharge can damage electronic components. Be sure you are
properly grounded before beginning any installation procedure.
To remove a memory board:
1. If the server is not configured for hot-plug mirrored memory, you must power down the
server. Refer to “Powering Down the Server” in this chapter.
Hot-plug replacement procedure: If the server is configured for hot-plug mirrored
memory, skip to step 2.