From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
km
>TSM mirroring doesnt help performance when doing expiration or reclamation
>anyway which is what you want to optimize the DB for.

TSM mirroring, however, DOES give one concrete benefit that OS or hardware 
mirroring can't. Mirroring TSM db and log volumes prevents corruption from 
being replicated to the mirrored volumes.

For me and most of my customers, that (and a maximum number of spindles) is 
enough.

(Yes, Allen, the debate rages on.)

--
Mark Stapleton
System engineer, CDW

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