Solaris Volume Manager Administration Guide

Classes of Volumes

You create a volume as a RAID-0 (concatenation or stripe) volume, a RAID-1 (mirror) volume, a RAID-5 volume, or a soft partition.

You can use either the Enhanced Storage tool within the Solaris Management Console or the command-line utilities to create and administer volumes.

The following table summarizes the classes of volumes.

Table 3–2 Classes of Volumes



RAID-0 (stripe or concatenation)

Can be used directly, or as the basic building block for mirrors. RAID-0 volumes do not directly provide data redundancy.  

RAID-1 (mirror)

Replicates data by maintaining multiple copies. A RAID-1 volume is composed of one or more RAID-0 volumes that are called submirrors. 


Replicates data by using parity information. In the case of disk failure, the missing data can be regenerated by using available data and the parity information. A RAID-5 volume is generally composed of slices. One slice's worth of space is allocated to parity information, but the parity is distributed across all slices in the RAID-5 volume. 

Soft partition 

Divides a slice or logical volume into one or more smaller, extensible volumes.