Mylex Global Array Manager, Руководство по установке и инструкция пользователя

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Running RAID Assist
4-26 GAM Client User’s Guide
few existing segmented spaces, the largest space is
used to create the logical drive.
4. Check the Write Cache box if you want this logical drive to use Write
Back caching. This improves performance but puts data at risk. You
should have a battery backup unit or uninterruptable power supply if
selecting this feature.
5. Check the Init Drive box if you want this logical drive to be fully
initialized at the conclusion of the configuration. It is recommended
that you check this option (if available), unless the controller is capable
of background initialization. If so, and you check the box, you’ll see a
message when you apply the configuration indicating that you can
make use of the background initialization support.
6. Select a stripe size. The stripe size is defined as the size, in kilobytes
(1024 bytes), of a single I/O operation. A stripe of data (data residing in
actual physical disk sectors, which are logically ordered first to last) is
divided over all disks in the drive group.
When selecting a stripe size of less than 64KB, the active cache line
size will change from 64KB to 8KB. A Warning message box will open
when you click the Apply button to complete your configuration (see
Figure 4-24).
Figure 4-24. Stripe Size Selection Warning
If you select
Yes
, the new configuration will be applied and an 8KB
cache line size will be active.
If you select No , the Logical Drives page of the Manual Configuration
Wizard will open. You can change the stripe size in order to obtain the
desired cache line size.
7. Select a cache line size, if enabled. Available settings will depend on
the selected stripe size.