Acer R720 Series manual Configuring the integrated SAS hardware RAID components

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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:

1Observe the ESD precautions and pre-installation instructions described on page 35.

2Remove the air baffles. See “To remove the small air baffle” section on page 45.

3Insert 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.

4Gently push down to detach the activation key.