Classes of Volumes
You create a volume as a RAID 0 (concatenation or stripe) volume, a RAID 1 (mirror) volume, a RAID 5 volume, a soft partition, or a transactional logging volume.
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|
Volume |
Description |
|---|---|
|
Can be used directly, or as the basic building blocks for mirrors and transactional devices. RAID 0 volumes do not directly provide data redundancy. |
|
|
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. |
|
|
Used to log a UFS file system. (UFS logging is a preferable solution to this need, however.) A transactional volume is composed of a master device and a logging device. Both of these devices can be a slice, RAID 0 volume, RAID 1 volume, or RAID5 volume. The master device contains the UFS file system. |
|
|
Soft partition |
Divides a slice or logical volume into one or more smaller, extensible volumes. |
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