Adaptec 133U2 User Guide - Page 75

Cache Enabled

Page 75 highlights

Configuring Arrays and Spares 9 Click Next. The Create Array - Advanced dialog box appears, as shown in Figure 5-5. Figure 5-5. Create Array - Advanced Dialog Box 10 Select dedicated spares if desired. The disks in the list are the available disks you did not select as array members. The spare(s) you select should be at least as large as the smallest array member. Otherwise the usable capacity of each array member will be reduced to the capacity of the spare. Note: We recommend using a spare pool instead of dedicated spares. See Creating Dedicated Spares or a Spare Pool on page 5-14 for more information. Spares in a spare pool can be used by any suitable array on the controller. 11 Select Cache Enabled to enable cache for the array. If the cache-enabled checkbox is greyed out, this means that no cache is available. If caching is available but you don't want to assign any, deselect the cache Enabled checkbox. 12 The assigned checkbox indicates the total number of blocks available for caching. 5-7

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5-7
Configuring Arrays and Spares
9
Click
Next
. The Create Array - Advanced dialog box appears,
as shown in Figure 5-5.
10
Select dedicated spares if desired. The disks in the list are the
available disks you did not select as array members. The
spare(s) you select should be at least as large as the smallest
array member. Otherwise the usable capacity of each array
member will be reduced to the capacity of the spare.
Note:
We recommend using a spare pool instead of
dedicated spares. See
Creating Dedicated Spares or a
Spare Pool
on page 5-14 for more information. Spares
in a
spare pool
can be used by any suitable array on the
controller.
11
Select
Cache Enabled
to enable cache for the array. If the
cache-enabled checkbox is greyed out, this means that no cache
is available. If caching is available but you don’t want to assign
any, deselect the cache Enabled checkbox.
12
The assigned checkbox indicates the total number of blocks
available for caching.
Figure 5-5. Create Array - Advanced Dialog Box