I expect you will get many replies, so here goes my small offering.
1) There is no such thing as an industry standard for backup
2) You need to find out/understand you r bisiness requirements for restore
and keep your backups sufficient to meet that requirement.




"Merryman, John A." <jmerryman AT partners DOT org>@vm.marist.edu> on 11/03/2003
02:17:23 PM

Please respond to "ADSM: Dist Stor Manager" <adsm-l AT vm.marist DOT edu>

Sent by:    "ADSM: Dist Stor Manager" <adsm-l AT vm.marist DOT edu>


To:    adsm-l AT vm.marist DOT edu
cc:
Subject:    Backup Versioning / Retention Policy Survey


Hi TSMers,

It's our understanding that industry standard TSM backup versioning
policies (if
there is such a thing) are the following:

TSM Policy Setting              Industry Standard
Versions Data Exist             7 / 14**
Versions Data Deleted           7/ 14**
Retain Extra Version            30
Retain Only Version             30

*7 versions of file system type files, and 14 versions of database type
files.

Please feedback if this is accurate- all comments and alternate examples
are
welcome.

Many Thanks,

 John



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