Acer AW2000h-AW170hq User Manual - Page 66

50 3 System upgrades configuration. 5. Do not mix UDIMMs with RDIMMs. Sparing mode (only supported on Intel Xeon Processor 5600 Series CPUs ) • In this mode, if the system detects degrading memory and did not crash, the data in the failed channel will be copied to the spare channel. The failed channel is then isolated and the spare channel becomes active. However, any uncorrectable error that happens before the isolation will still cause the system to stop normal operation. • Channel 3 is the spare channel. Therefore, the effective size will be reduced by one-third. • Follow the population rules described in the independent mode. • Sparing mode requires that all three channels use identical DIMMs. 1A, 2A and 3A should be the same type, size and manufacturer, likewise for 1B, 2B and 3B. The same rule applies to processor 2. • Intel® Xeon® Processor 5500 Series CPUs do NOT support the memory sparing mode. Memory population for sparing mode Single processor configuration Configuration A B Single processor Processor 1 P1DIMM slots Channel 1 Channel 2 Channel 3 1B 1A 2B 2A 3B 3A X X X X X X X X X Dual processor configuration Configuration A B C D Dual processors Processor 1 P1DIMM slots Channel 1 Channel 2 Channel 3 1B 1A 2B 2A 3B 3A X X X X X X X X X X X X X X X X X X Processor 2 P2DIMM slots Channel 1 Channel 2 Channel 3 1B 1A 2B 2A 3B 3A X X X X X X X X X X X X