Promise Technology FastTrak66 Anwenderhandbuch Seite 24

Manual EN 05-08-1999 11:30 Pagina 20
FastBuild™ Configuration Setup
Mirroring (Fault Tolerance)
Allows creation of fault tolerant arrays for data security. Also provides a featu-
re to add fault tolerance to one drive with existing data. The Stripe Block
option does not apply.
Typical Application usage
Allows the user to choose the type of software to optimized for speed enhan-
cement. The recommended stripe will then appear in the [ Auto Setup
Configuration ].
Spare Drive Count
An extra drive that is not assigned to a disk array will be recognized as a Spare
Drive for use with mirrored disk arrays. Such a drive is immediately used as a
"standby" replacement. It is automatically added to an array once a disk mem-
ber of the array has been detected as "failed." To restore fault tolerance as
quickly as possible, FastTrak66 begins to perform an automatic data rebuild on
the "spare" drive in the background without the need to restart the system. At
a later time, the failed drive can be physically removed from the FastTrak66
card and an extra drive added in its place to function as the "spare" drive.
Creating Multiple Disk Arrays with Auto Setup
If you plan to create multiple arrays, attach the drives necessary to create the
first disk array and complete the <1> Auto Setup. Second, install the additional
drives for the second array and again use the <1> Auto Setup. Repeat if more
disk arrays need to be created.
You can manually create disk arrays with the <3> Define Array option if
necessary.
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