Rank Sparing Mode - Acer AT350 F2 Series Service Manual

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Rank Sparing mode

• In this mode, an unused spare rank is reserved on each channel. The
spare rank is used to copy the contents of a failing rank on the channel
to keep a system working when a rank starts to fail. The reserved rank
is not able to be used before the other rank fail.
• Follow the population rules described in the independent mode.
Memory population for rank sparing mode
Single processor configuration
Notes: 1. Place DIMMs in "X" location.
2. DIMM population must correspond to the above tables.
3. DIMM modules support 1 GB, 2 GB and 4 GB DIMMs.
4. DIMM modules support 8 GB and 16 GB DIMMs (support
depends on availability).
5. Do not mix UDIMMs with RDIMMs.
6. 3-DIMM per channel configuration is only available for
single/dual rank RDIMM.
7. For UDIMM and quad rank RDIMM, only a maximum of two
DIMMs per channel can be supported.
3 System upgrades