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18. Select the Shared check boxes for all the logical drives.
19. Do not change the merge-group number from the default provided.
20. Record the controller name, partner name, and merge-group numbers; store
them in a safe place. You will need this information to recover the configuration
if the ServeRAID controller fails.
Note: You can save this information to a file by using the ServeRAID Manager
program:
a. In the ServeRAID Manager tree, click the server.
b. Click Actions
→
Save printable configuration .
21. Click OK .
22. To exit the ServeRAID Manager program, click File
→
Exit .
Creating spanned arrays
If you want to assign RAID level-x0 to an array, you must create a spanned array.
For more information about spanned arrays, see Chapter 3, “Understanding RAID
technology” on page 21.
Note: In a failover environment, spanned arrays are supported only by IBM
ServeRAID-4 Ultra160 SCSI controllers.
Complete the following steps to create one or more spanned arrays:
1. If you have not completed steps 1 through 4 in “Configuring ServeRAID arrays
and logical drives” on page 55, do so now.
2. Create identical arrays by doing the following:
a. Click the Array tab in the right panel; then, from the list of ready drives,
select the drives you want to move to the array.
b. Click ( Add selected drives ) to add the drives to the array.
c. Repeat steps 2a and 2b for each additional array that you want to configure.
Note: To create a spanned array, the arrays to be spanned must be
identical (that is, they must have the same number of physical
drives).
Figure 26. “Configure controller 1 for clustering” window
Chapter 6. Configuring two ServeRAID controllers in a failover environment
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