Using fssnap we can quickly take a temporary snapshot of any UFS file system and then use that snapshot for backup operations.
UFS is the primary file system for the Solaris OS. UFS is extremely mature, very stable, and for most applications, is the file system of choice.
Did you know that it is also possible without a volume manager? You just have to know some special arguments to the mkfs command.
Basically, a snapshot is read-only copy of a file system (for the purpose of backup).
When enabled, all changes to file system meta-data are written to an intent log prior to being written out to the file system itself.
Using the tunesfs command you can modify certain parameters after creating the original file system without rebuilding the entire file system.
Solaris supports a number of different file systems some out of the box, others by ways of additional software.