User`s guide

360 Implementing an Open IBM SAN
However, since each composite drive had its attributes changed as it became a
member of the mirror, it will no longer be mapped. The composite drives will
show up as UnMapped in the Control Center window. This is shown in
Figure 5-37. The mirror created in 5.8.2, “Creating the mirror” on page 355 was
removed.
Figure 5-37 UnMapped composite drives
The existing composite drives ‘ITSO1’ and ‘ITSO3’ cannot be mapped or given a
new LUN number at this point. Each logical composite drive must be removed as
well. This will cause the composite drive to be removed and its member drives to
become general spares. Once they are general spares, the drives can be used to
recreate the composite drive or to create new logical drives.