RAID 1 Examples

A RAID 1 volume, or mirror, is a volume that maintains identical copiess of the data in RAID 0 volumes (stripes or concatenations). After you configure a RAID 1 volume, it can be used just as if it were a slice.

RAID 1 volumes that are mirrored are called submirrors. A mirror is made up of one or more RAID 0 volumes (stripes or concatenations).

For example, you could have a RAID 1 volume called d2 made up of two volumes (submirrors) d20 and d21. Enhanced Storage makes duplicate copies of the data located on multiple physical disks and presents one virtual disk to the application. All disk writes are duplicated. Disk reads come from the underlying submirrors. Thus, the total capacity of mirror d2 is the size of the smaller submirrors (if they are not equal size).

For more information about mirrors, see RAID 1 (Mirrors) Overview .