Gateway 840 VT-100, User Manual

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45
Configuring array read-ahead and writeback cache
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5
Press the up and down arrow keys to select an array from the list to which
you want to make changes, then press
E
NTER
. The Writeback Cache
Parameters Menu opens.
6
Choose a Writeback Cache parameter to use for the selected array.
Press the up and down arrow keys to select the cache, and the left and
right arrow keys to toggle from Disabled to Enabled, or choose one of the
pre-determined cache threshold sizes (1 MB, 2 MB, 4 MB, 8 MB, 16 MB,
32 MB, 64 MB, 128 MB, or 256 MB).
There are three additional options to an active Write Back Cache: Disable
if a partner controller fails or is missing, Disable if a controller battery fails,
or Disable if the array is in a critical state, (for example, during a rebuild).
Enable the options for your application. For maximum data protection, we
recommend that you enable all three options.