NOTE:
After replacing the processor and heatsink module use the cpuconfig from UEFI to verify the that
the processor socket has been reconfigured.
SAS backplane
The SAS disk backplane supports two small form factor hard disk drives. The backplane supports hot-
plugging a single SAS drive at a time. The activity LEDs and drive present LEDs are controlled by a
preprogrammed system-on-chip. The system board hosts the SAS controller and supplies 12 V, 5 V, and
3.3 V standby power to the backplane.
The SAS backplane is connected to the system board with a right angle connector. This connector is
specifically designed for high-speed differential applications, and supports server speeds exceeding 5
Gigabits per second. Power, sense, and I
2
C signals are routed through this connector as well as the SAS
differential pairs and SGPIO signals.
Procedure
1. Power off the server blade and remove it from the enclosure (Preparing the server blade for
servicing on page 112).
2. Remove the access panel (Access panel on page 117).
3. Remove the disk drives or disk drive blanks (Disk drives on page 118 or Disk drive blanks on page
118).
4. Lift the SAS back plane straight out of the server by the backplane handle.
To replace the component, reverse the removal procedure.
Server battery
If the server blade no longer automatically displays the correct date and time, you might have to replace
the battery that provides power to the real-time clock. Under normal use, battery life is 5 to 10 years.
126 SAS backplane
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