ProLiant ML310 Generation 2 Server Maintenance and Service Guide

24 HP ProLiant ML310 Generation 2 Server Maintenance and Service Guide
DIMM installation guidelines
Observe the following guidelines when installing additional memory:
• DIMMs installed in the server must be Unbuffered DDR DRAM, 2.5 volts,
64 bits wide, and ECC.
• If only a single DIMM is installed, it must be installed in slot 1A.
• All DIMMs installed must be the same speed.
BIOS detects the DIMM population and sets the system as follows:
• Single-channel mode: DIMMs installed in one channel only.
• Dual-channel asymmetric mode: DIMMs installed in both channels but of
unequal capacities per channel.
• Dual-channel interleaved mode: DIMMs installed in both channels with
equal channel capacities.
The following table lists some, but not all, possible configurations. For best
performance, HP recommends dual-channel interleaved mode configurations.
Slot 1A Slot 2A Slot 3B Slot 4B Total memory Mode
128 MB — — — 128 MB Single-channel
128 MB — 128 MB — 256 MB Dual-channel interleaved
128 MB 128 MB 128 MB — 384 MB Dual-channel
asymmetric
128 MB 128 MB 128 MB 128 MB 512 MB Dual-channel interleaved
256 MB — — — 256 MB Single-channel
256 MB — 256 MB — 512 MB Dual-channel interleaved
512 MB — — — 512 MB Single-channel
512 MB — 512 MB — 1 GB Dual-channel interleaved
1 GB — — — 1 GB Single-channel
1 GB — 1 GB — 2 GB Dual-channel interleaved
1 GB 1 GB 1 GB — 3 GB Dual-channel
asymmetric