NEC Express 5800 User Manual page 202

IMPORTANT:
A volume that spans a few hard disks is mirrored (mirror volume, span volume)
Even if a volume consists of a few hard disks, the screen shows information on each pair of
hard disks that make up a mirror. In the above example, Volume A is shown in Mirror 2
(10/40/2, 11/40/2) and Mirror 3 (10/40/3, 11/40/3), separately. When a hard disk fails, that
status will be reflected in both mirrors.
Boot volume
Volume A
Mirror
Mirror
Boot volume
Volume A
Installing and Using Utilities
Volume A
Mirror
Volume A
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