Understanding adaptive read-ahead cache mode

The controller continually reevaluates whether to transfer data from disk to its local cache in increments equal to the stripe size or in increments equal to the system I/O request size.

If you have the controller and firmware for adaptive read-ahead mode installed, the Adaptec Storage Manager reports Adaptive on the controller properties pane. Otherwise, the properties pane states either Enabled or Disabled.

Note: You can override Adaptive read-ahead, but not through the Adaptec Storage Manager. Instead, use the Command Line Interface (CLI) included on the Adaptec RAID Installation CD.


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