Configuring an Array
Compaq Smart Array 5300 Controller User Guide
7-17
COMPAQ CONFIDENTIAL
Writer: John Turner File Name: h-ch7 configuring an array.doc
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3.
Create one or more logical drives on the array.
For this example, assume that you have ten 9.1-GB drives connected to your
controller. You want to make two arrays:
•
Array A: seven 9.1-GB drives with a spare, configured with RAID 5 fault
tolerance
•
Array B: two 9.1-GB drives in a RAID 1+0 fault-tolerance configuration
Configuring the Controller Settings
1.
On the main ACU screen, select the controller to be used from the drop-down list
in the
Controller Selection
box. (Alternatively, click
Controller
on the menu
bar, and then click
Select.
)
2.
Click
Controller Settings.
The
Controller Settings
screen is displayed (Figure 7-9).
3.
Select the rebuild priority, expand priority, and accelerator ratio.
4.
Click
Done
to return to the main ACU screen.
Assigning Physical Drives of the Same Size to an Array
1.
Click
Create Array
in the
Controller
box.
The
Create Drive Array
screen is displayed (Figure 7-10).
2.
Select the drives that are to constitute the array from the drive list in the left
panel.
—
Do not assign a group of physical drives to the same array unless they are of
the same capacity. If the drives have different capacities, the excess capacity
of the larger drives cannot be used by the array and is wasted.
—
The probability that an array will experience a drive failure increases with
the number of drives in the array. Compaq recommends that no more than 14
drives be used per array in RAID 5 configurations.
For this example, select the seven drives on Port 1 with SCSI IDs 0 through 6.