restore is faster than backup

[atif_munir]

Dear All,
I have a very much confusing issue. We have a SF6900 with 2TB storage from HDS running Solaris 9.

Every time I take backup of the filesystem or database I am getting an average speed of 50MB/sec.But over the restore on the same box I am getting a very good speed around 80MB/sec.

It is reallly confusing.....anyone have any idea.
PS: The box is completely idel during backup/restor.

Regards,
atif

[Stumpr2]

May be any of the reasons listed in this technote. My first guess would be disk defrag is needed.

Methods to improve backup performance without adjusting VERITAS NetBackup (tm) buffer files
http://support.veritas.com/docs/260719

[zippy]

Atif,

In short

Restores in general require less "overhead" than backups.

There are"many" ways to increase or decrease the speed in which backups and restores are performed. I wont go into details because it's far to much info to post.


JD