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3 System upgrade

Caution! Do not attempt to hot-remove or hot-add a memory board in a non-redundant configuration. If your server is not configured in the BIOS setup utility for maximum compatibility, memory RAID, or memory mirroring, you must power down your server before removing or installing any memory board or DIMMs. For instructions, see “Cold removal of memory board instructions” described on page 70 and “Cold insertion of a memory board instructions” described on page 71.

Memory board replacement options

The server include the following memory board replacement options:

Memory hot-replace - While the system is in operation and configured with a RAID or mirroring configuration, you can replace a failed memory board. The replacement board must include identical memory capacity. The system will test, initialize, and rebuild the data on the memory board and then include this board in the system memory configuration. The activity is transparent to the OS. For instructions on how to hot-replace the memory board, see “Removing a hot-plug memory board” on page 53.

Memory hot-add - You can increase the memory capacity of the system while the OS is active and if it is in a RAID or mirror configuration. If your server is in a RAID configuration, you can remove only one memory board at a time to upgrade the memory or replace the memory board. In a mirror configuration, you can add an additional two mirrored memory boards. In a maximum compatibility configuration, a new memory board can be added to an empty slot. When the initialization is complete, the operating system is informed of the new memory. For instructions on how to hot-add the memory board, see “Installing a hot-plug memory board” on page 54.

Memory cold-plug operation - If your server is not in a RAID or mirror configuration, you must turn off the server to add or replace the memory board. To replace or remove a memory board using cold-plug operation, see “Installing a memory board” on page 71 and “Removing a memory board” on page 70.

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Acer R910 manual Memory board replacement options