Break mirror

a.Select Foreign Config to display the foreign configuration information on the Foreign Config screen.

b.Press <F2> to display the options (Import, Clear).

NOTE: You must have all the disks in the system before you perform the import operation.

c.Select Import to import the foreign configuration to the controller or select Clear to delete the foreign configuration(s) from the re-inserted disk(s).

In the Preview Configuration Data window, the status of a physical disk that needs to be rebuilt is displayed as Rebuild.

NOTE: When you import a foreign configuration, the dedicated hot spares in the configuration are imported as dedicated hot spares on two conditions — the associated virtual disk is already present or the associated virtual disk is also imported along with the configuration.

NOTE: Start a consistency check immediately after the rebuild is complete to ensure data integrity for the virtual disks. For more information about checking data consistency, see Checking Data Consistency .

2.If all the physical disks in a virtual disk are removed at different times and re-inserted, the controller considers the disks to have foreign configurations. Perform the following steps:

a.Select Foreign Configuration View to display the complete virtual disk, across different foreign configurations and allow foreign configurations to be imported.

b.Press <F2> to display the options Import and Clear.

NOTE: You must have all the drives in the system before you perform the import operation.

c.Select Import to merge the foreign configurations with the existing configuration on the controller or Clear to delete the foreign configuration(s) from the re-inserted disk(s).

If you select Import, all drives that were removed before the virtual disk became offline are imported, and then automatically rebuilt.

3.If the physical disks in a non-redundant virtual disk are removed, the controller considers the disks to have foreign configurations. Perform the following steps:

a.Select Foreign Configuration View to display the complete foreign configuration information.

b.Press <F2> to display the options Import and Clear.

c.Select Import to import the foreign configurations to the virtual disk or Clear to delete the foreign configuration(s) from the re-inserted disk(s).

No rebuilds occur after the import operation because there is no redundant data to rebuild the disks with.

A Break Mirror is performed only on RAID 1 arrays. It provides a way to 'split' the mirror and spin-down one of the hard disks, which can then be imported into the configuration of a different PERC 9 series controller. This can be a useful way to:

•Create a disk image that can be imported and booted on a different system.

•Assist in software or configuration testing, where half of the mirror can be removed to ensure configuration consistency.