IBM 71413SU - System x3950 M2 Reference

Contents

IBM System x3950 M2 and x3850 M2 Technical Introduction 35hot-swapped by the IT administrator. In general, failed fans should be replaced within 48hours following failure. The two Gigabit Ethernet ports can be configured as a team to form a redundant pair. The memory subsystem has a number of redundancy features, including memorymirroring and Memory ProteXion, as described in “System memory” on page 21. Support is available for RAID disk arrays, both with the onboard LSI 1078 for RAID-0 andRAID-1. The optional ServeRAID-MR10k provides additional RAID features and a 256 MBbattery-backed cache. Thex3850 M2 and x3950 M2 have four internal, hot-swap diskdrive bays. The two, standard 1440 W hot-swap power supplies are redundant in all configurations at220 V. Note that at 110 V, the second power supply is not redundant.The layout of the x3850 M2 and x3950 M2, showing the location of the memory cards, powersupplies, and fans, is displayed in Figure 16.Figure 16 Redundancy features of the x3850 M2 and x3950 M2Light path diagnosticsTo limit the customer’s need to slide the server out of the rack to diagnose problems, a lightpath diagnostics panel is located at the front of the x3850 M2 and x3950 M2. This panelslides out from the front of the server so the customer can view all light pathdiagnostics-monitored server subsystems. In the event that maintenance is required, thecustomer can slide the server out of the rack and, using the LEDs, find the failed or failingcomponent.Light path diagnostics can monitor and report on the health of microprocessors, mainmemory, hard disk drives, PCI adapters, fans, power supplies, VRMs, and the internal systemtemperature. Figure 17 on page 36 shows the light path diagnostic panel.Memory redund-ancy features:memory mirroring,Memory ProteXion,and ChipKillSix hot-swap fans(one in each pair isredundant)Two hot-swap redundantpower supplies (onebelow the other)