Mylex eXtremeRAID Guía de instalación descargar pdf (Pagina 206)

Glossary

G-12 GAM Client v3.00 and WSAM User’s Manual

To use the automatic rebuild feature, you should always maintain a hot spare

drive in your system. When a drive fails, the hot spare will automatically

replace the failed drive and the data will be rebuilt. The system administrator

can disconnect and remove the bad drive and replace it with a new drive. The

administrator can then make this new drive a hot spare.

Stripe Order

The order in which disk drives appear within a drive group. This order must

be maintained to access the data correctly, and is critical to the controller’s

ability to ‘Rebuild’ failed drives.

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 drive group disks.

Stripe Width

The number of striped drives within a drive group.

Striping

Refers to the storing of a sequential block of incoming data across multiple

drives in a group. For example, if there are 3 drives in a group, the data will

be separated into blocks and block 1 of the data will be stored on drive 1,

block 2 on drive 2, block 3 on drive 3, block 4 on drive 1, block 5 on drive 2

and so on. This storage method increases the disk system throughput by

ensuring a balanced load among all drives.

System Drive Affinity

See “LUN Mapping” .

System Drives

See “Logical Drives”.

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Mylex eXtremeRAID Guía de instalación Pagina 206