[Veritas-bu] Tape Reclaimation
2006-01-30 10:50:27
Subject: |
[Veritas-bu] Tape Reclaimation |
From: |
wts AT maine DOT edu (Wayne T Smith) |
Date: |
Mon, 30 Jan 2006 10:50:27 -0500 |
TSM and NBU are too different to say you need this or that feature in
NBU, IMHO.
If you wish to do a *lot* of reclamation, TSM can give you better
utilization ... but if you can't afford a lot, utilization under TSM can
be poor.
TSM's real differences comes from backing up any one file exactly once,
having disk storage pools (for over a decade) that work very well, and
having everything available to a rudimentary SQL (please excuse that I
haven't used TSM in 3 years).
Synthetic backups are sort of the reclamation of NBU ... and I wish
Symantec would put some teeth into it. (I have a number of servers that
I *never* want to do a full backup).
cheers, wayne
> Coming from a mainframe background, I'd have to say that TSM-style
> "reclamation", or DFHSM-style "recycle", is something that would be
> very helpful in NetBackup. Compared to TSM and DFHSM, NBU is very
> inefficient in it's tape usage, as David points out below. Of course,
> this reclamation does incur a fair processing overhead.
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