Adaptec 2120S - SCSI RAID Controller Guía de usuario descargar pdf (Pagina 326)

13-4

Adaptec SCSI RAID Software Reference Guide

Assigning Array Properties

To assign properties to the new array:

1 From the Array Properties menu, select an array type and press

Enter. Note that only those array types available according to the

number of drives selected are displayed. For a description of the

supported array types, see the installation guide shipped with

your controller.

The physical SCSI limitation for the controller is 15 drives per

channel. The maximum number of drives allowed and minimum

number of drives required depends on the RAID level. Consult

Table 13-1 for a listing of this information.

2 Type in an optional label for the array and press Enter.

3 Enter the desired array size. The maximum array size available

based on the segments you selected is displayed automatically. If

you want to designate a different array size, type the desired

array size and select MB (megabytes), GB (gigabytes), or TB

(terabytes) from the drop-down list. If the available space from

the selected segments is greater than the size specified, the

remaining space will be available for use in other arrays.

4 Select the desired stripe size. The allowable stripe sizes are 16, 32,

and 64 KB (the default). For RAID-50 arrays, 64 KB is the only

stripe size allowed. The default stripe size gives the best overall

performance in most network environments.

5 Specify whether you want to enable read caching for the array.

Table 13-1 RAID Levels and Drives Information

RAID Level Maximum

Drives

Allowed

Minimum

Drives

Required

Volume 32 1

RAID 0 48 2

RAID 1 2 2

RAID 5 16 3

RAID 10 48 4

RAID 50 48 6

1 2 ... 321 322 323 324 325 326 327 328 329 330 331 ... 353 354

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Adaptec 2120S - SCSI RAID Controller Guía de usuario Pagina 326