Remember that each version of every file you keep take something like 600
bytes in your database.
You are effectively saying you have up to 1830 versions of every file (5
years times 366 days per year).
Times say 5000 files per system, and 600 bytes per version, is about 5.2 gig
of database space per
server.  Now how many servers are you backing up? (most of our servers have
over 10000 files on them
that we back up.

> -----Original Message-----
> From: Rivera, Jose Spri [SMTP:jose.spri.rivera AT SPCORP DOT COM]
> Sent: Monday, February 03, 2003 8:21 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      TSM Question
>
> Hi - Wondering if I can get ideas or suggestions
>
> We need to retain all backups for a 5 year period. I currently have a
> retention period for backups of  180Days.  We are debating the scenarios -
> Wondering if I can poll the list to get possible suggestions or ideas for
> handling this. Some things that we have been discussing are
>
> 1) extend the retention period to 5 years and set nolimit to versions
> created.. deleted etc
> 2) create separate mgmtclass for once a month backups with retention
> period
> of 5 years
> 3) generate backupsets once a month and retain for 5 years
> 4) create separate TSM instance to provide 5 year retention
> 5) Using archive with 5 year retention
>
> Would appreciate any ideas and potential ramifications
>
> I currently have 180 unix and intel clients, storing 15TB onsite and 15TB
> offsite. My db is approx 55GB
>
> I am using TSM 5.1.5.4 on an IBM RS/6000 (H80 with 6cpus and 8GBs of ram)
> running AIX 5.1ML03. Attached are 2 x3584 with 8 LTO fibre drives for
> backups. For archive I use 3494 library (L12 and D12 with 4x3590H1a
> drives).
>
>
>
> Thanks
> Jose Rivera
> Unix Technical Consultant
>
>
>
>
>
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