25
5
Main memory
V
CAUTION!
Make sure you observe the safety notes in the
chapter “Important notes”
on page 9
ff.
This chapter describes how to replace and upgrade memory cards and DIMMs
(dual inline memory modules) when the system is switched off.
I
In redundant (mirroring or RAID) configurations, existing (e.g. defective)
memory cards can be replaced and new memory cards can be added
while the system is running (“hot plug”). The relevant procedures are
described in the Operating Manual supplied with the server.
The server supports 333 MHz, 1.8V, 240 pin, PC2-3200 single-ranked double
data-rate (DDR) II, registered synchronous dynamic random-access memory
(SDRAM) with error correcting code (ECC) DIMMs. These DIMMs must be
compatible with the latest PC2-3200 SDRAM Registered DIMM specifications.
DIMMs with a capacity of 2 GB and 4 GB are allowed. Each system board
supports a maximum memory configuration of 64 GB. DIMMs with a higher
capacity will be available in due course.
The system board provides slots for four hot-plug memory cards (A - D), each
of which can accommodate up to four DIMMs. Two DIMMs make up one
memory bank (see
table 2 on page 27
).
