Replacing and Adding DIMMs
5-24
Stratus ftServer 2600, 4500, and 6300 Systems: Operation and Maintenance Guide
(R639)
Replacing and Adding DIMMs
You install DIMMs when either upgrading system memory or replacing a faulty DIMM.
See the following topics:
• “Upgrading System Memory” on page 5-24
• “Installing DIMMs” on page 5-28
• “Replacing a Faulty DIMM” on page 5-28
Upgrading System Memory
When adding DIMMs, if you require help from the CAC or
your authorized Stratus service representative, you will
incur costs and you may void your system's warranty.
Unless you have been trained to replace DIMMs,
upgrading a system's CPU-I/O enclosures offers a
lower-risk way of increasing system memory.
When upgrading system memory, you must maintain the same total memory size in
each CPU-I/O enclosure. For example, if CPU element 0 has 96 gigabytes (GB), CPU
element 1 must have 96 GB.
Each slot in an enclosure must contain the same-sized DIMM as the corresponding slot
in the other enclosure. For example, if slot 1 in CPU element 0 has 8 GB, then slot 1 in
CPU element 1 must have 8 GB.
Within an enclosure, different slots can contain different-sized DIMMs. For instance,
slot 1 in CPU elements 0 and 1 can have 4 MB, and slot 2 in CPU elements 0 and 1
can have 8 GB.
The DIMMs in the slots can be from different manufacturers, but they must be supplied
by Stratus.
Although the CPU-I/O enclosures are numbered CPU
element 0, I/O element 10, and CPU element 1,
I/O element 11, the CPUs themselves within each
enclosure are numbered CPU 1 and CPU 2.
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