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Configuring the integrated SAS
hardware RAID components
The system supports hardware RAID through the SAS mid-plane and
backplane board. The server platform supports RAID 0, 1, 5, 10, and 50
levels. Functionality for hardware RAID is enabled by using the
following components:
• RAID activation key
• RAID cache
There is also an option to install the RAID BBU. If power to the storage
I/O processor drops below specifications, the RAID BBU maintains the
contents of the DIMM by keeping the DIMM in self-refresh mode until
power is restored. After power is restored, data can be safely written
to drives, maintaining the integrity of the disk array.
Removing and installing the RAID activation key
To remove the RAID activation key:
1 Observe the ESD precautions and pre-installation instructions
described on page 35.
2 Remove the air baffles. See “To remove the small air baffle”
section on page 45.
3 Insert the tip of a small flat-bladed screwdriver under the plastic
tab on the retainer holding the activation key to the SAS mid-
plane board.
4 Gently push down to detach the activation key.
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