Hot-Plug Mirrored Memory Technology - HP ProLiant DL580 Setup And Installation Manual

As long as no errors have occurred on the memory board, the system periodically
switches the bank it reads from to be sure that both banks are monitored for memory
errors.
DIMM Installation Requirements
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:
•
The board must be installed in memory board slot 1.
•
Bank B mirrors bank A. Bank A must always be populated.
•
DIMMs in the mirrored bank must be configured identically to the bank they are
mirroring.
IMPORTANT: If memory board slot 1 is not populated, the system automatically switches to
advanced ECC memory and displays an error message during POST.

Hot-Plug Mirrored Memory Technology

Features
Hot-plug mirrored memory uses an additional memory board to provide complete
memory redundancy. Hot-plug mirrored memory has the following features and
advantages:
•
Provides protection against both single-bit and multi-bit errors
If a DIMM on one memory board has a multi-bit error, the system reads from the
other memory board instead.
•
Enables hot-replace capabilities, which help minimize server downtime
•
Supports up to 16 GB of system memory and 16 GB of redundant memory using
2-GB DIMMs
IMPORTANT: If a DIMM exceeds the HP defined limit for single-bit correctable errors, the
system will not fail over to the redundant banks, but will notify you of the condition through
Insight Manager 7.
HP ProLiant DL580 Generation 2 Server Setup and Installation Guide
Memory
6-13