>Has anyone else experienced a problem when restoring data where it starts >fine but then at some random point it slows down to a crawl? The wait time >starts to climb to 38 seconds, then resets to 0, then climbs to 38 seconds, >then back to 0 constantly until there is no other choice but to stop the >session. I was running a restore as with a virtualnodename, using several >restores at once (since im restoring almost 1TB).
Without knowing the kind of restoral you were performing or its environment (disk/file system configuration, collocation, tape drive type and model, etc.) we can only offer general suggestions. In that you were running multiple restore sessions at a time, certainly waiting for tape dismount and mount will be aggravated. In http://people.bu.edu/rbs/ADSM.QuickFacts topic "Restoral performance", the minimization of MOUNTRetention will help a lot. Automatic tape drive cleaning between tape mounts will add unaccountable time. Directory congestion slows performance. Data spread over tapes, with tape technology which is poor at start-stop action is bad news. The more information you can gather and supply, the more we can offer. Richard Sims, BU
