SUPER MICRO Computer LSI 2108/2208 user manual Virtual Drive Definition

LSI 2108/2208 SAS MegaRAID Configuration Utility User's Manual

5. The Virtual Drive Definition screen displays, as shown below.

Virtual Drive Definition

In the Virtual Drive Definition screen, configure the following options as needed:

RAID Level: Select the desired RAID level. The available options are:

•RAID 0 (data striping)

•RAID 1 (data mirroring)

•RAID 5 (data striping with parity)

•RAID 6 (distributed parity and disk striping)

•RAID 10 (striped mirroring)

•RAID 50 (striped mirroring)

•RAID 60 (distributed parity with two independent parity blocks per stripe)

Stripe Size: Select the desired stripe size.

Access Policy: Select the desired data access policy.

Read Policy: Select either Always Read Ahead or No Read Ahead. Selecting Al- ways Read Ahead will improve performance during sequential reads.

Write Policy: Select between the following options:

•Write-Through: Use this option to write data to both the controller cache and the drive once the data is retrieved.

•Write-Back With BBU: Use this option to write data only to the controller cache, provided that a battery backup is installed and functional.

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