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Consolidating Arrays
Consolidating arrays means moving arrays that exist on more than one
controller onto a single controller. To move an array to another controller, the
conditions listed previously for moving drives, and the following additional
restrictions must be met:
All of the drives in the array must be moved at the same time.
Positions of drives on the destination controller should not be moved at
the same time.
If any drives are missing or have failed, all data on the moved arrays could be
lost. If you have previously moved an array and plan to restore it to its original
controller, see the following section, "Restoring an Array to Its Original
Controller."
Figure 2-3 shows an original distributed configuration with two controllers, each
having one array: drive IDs 0, 1, 2, and 3 constitute Array A on Controller 1 and
drive IDs 0, 1, and 2 constitute Array A on Controller 2. Figure 2-4 shows that
after removing the array from Controller 2 and adding it to Controller 1,
Controller 1 has two arrays: drive IDs 0, 1, 2, and 3 constitute Array A and
drive IDs 4, and 5 constitute Array B. Controller 2 has no arrays.
NOTE: A spare can be added as part of an array during this process.
However, it will not be restored as a spare until you run Array Configuration
Utility on the newly configured array.
Controller 1
ID5
ID4
ID3
ID2
ID1
ID0
Figure 2-2. Configuration with two arrays, two controllers
Writer: Karen Hale Project: Compaq Smart Array 221 Controller User Guide Comments: 388541-001
CAUTION: To protect against data loss, data should be backed
up before moving an array.
ID5
ID4
d
ID3
c
ID2
b
Array A
ID1
a
ID0
File Name: C-CH02.DOC Last Saved On: 11/5/98 12:27 PM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Controller 2
y
Array A
x
Compaq Smart Array 221 Controller User Guide
2-7
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