Can anybody tell me where I can locate a copy of the TSM 3.7 Technical Ref Redbook.
I assume it is a seperate entity to the Admin Guide and Admin Reference. Thanks Farren Minns John Wiley & Sons Ltd Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: Subject: Re: DB Cache Hit Rate Question >I'm a little confused about the cache hit ratio information. If I run >expiration on a database, surely the TSM server has to trawl through the >entire thing on disk as it does not already reside in the buffer. So how >would I expect to see hit ratios of 99% or higher. I won't go into details >here as I'm more interested in the process of how the database and cache >work than out particular performance problems. But, as we do very little in >the way of restores, surely the amount of time that a requested database >file is present in the cache must be very low, so a cache hit ratio of >96-98% would make sense. Farren - If you have not yet delved into the TSM Technical Guide redbooks, you will find them excellent reading, particularly as they serve as a record of the evolution of the product. The TSM 3.7 Technical Guide in particular talks about the buffer pool size and use of Expiration as a self-tuning measure. Richard Sims, BU (home shoveling today)