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Major components of the blade server
Remove the blade server from the BladeCenter unit and remove the blade server
cover to see its components. Figure 2 shows the major components of the blade
server.
Expansion
card
connectors
Modular
flash drive
connector and
retention clip
Expansion
card
connectors
Light path
diagnostics
switch
Figure 2. Major components of the blade server
Both IBM PowerXCell 8i processors and IBM PowerXCell 8i companion chips are
underneath the heat sinks and therefore not visible. The IBM PowerXCell 8i
processors and the companion chips are soldered onto the system board and are
not removable.
Reliability, availability, and serviceability features
Three important features in server design are reliability, availability, and
serviceability (RAS). These RAS features are designed to help ensure that your
blade server is available when you want to use it; and, in the event of a failure, help
you easily diagnose and repair the failure with minimal inconvenience.
The blade server has the following component-level RAS features:
v Transparent CPU Hardware error recovery
v ECC DDR2 memory
v Predictive failure analysis (PFA) for correctable errors (CEs) on the IBM
v PFA for CE on the system memory DDR2 DIMMs
v Memory Scrubbing on DDR2 system memory
v DDR2 System memory failure isolation for memory errors to a specific memory
v DDR2 I/O Buffer memory failure isolation to a specific DIMM
v PCI Bus Parity
The blade server has the following blade-level RAS features:
v Degraded boot for DDR2 memory (both system and I/O buffer) errors
v Automatic server recovery and restart:
4
BladeCenter QS22 Type 0793: Installation and User's Guide
I/O buffer DIMM slot
Light box
Battery
PowerXCell 8i companion chip attached I/O Buffer DDR2 DIMMs
channel (a pair of DIMMs attached to IBM PowerXCell 8i-0 or IBM PowerXCell
8i-1)
Heat sinks
I/O buffer DIMM slot
System memory
DIMM slots
System memory
DIMM slots
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