Configuring an Array
7-18
Compaq Smart Array 5i Plus Controller and Battery Backed Write Cache Enabler User Guide
COMPAQ CONFIDENTIAL
Writer: Amy L. Laffitte File Name: h-ch7 Configuring an Array
Codename: Executor Part Number: 266328-001 Last Saved On: 2/8/02 10:39 AM
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 you want to build the array with from the drives that are
shown in the left panel.
IMPORTANT:
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.
For this example, select the three drives on Port 1 with SCSI IDs 0, 1, and 2.
3.
Click
Assign Drive(s) to Array
(Figure 7-19) in the middle of the screen.
NOTE:
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.
4.
Select the drive at Port 1: SCSI ID 3 and click
Assign Spare to Array
in the
middle of the screen.
NOTE:
You can assign the same spare drive to several arrays. In such a case, verify that
the capacity of the spare is enough for each array. (Spare drives must have a capacity no
less than that of other drives in the same array.)
The
Create Drive Array
screen now looks like Figure 7-15.
