Is there a guide or rule of thumb for determining what collocation will do to library space? It is being considered for improving restore speeds.
I'm backing up 80TB in 30 volumes(filespaces) on a solaris server. Currently there is no collocation set, all data goes to a long-term management class, single onsite and off-site tape pools, data churn averages < 1TB/night. Using a 650 slot L700 library, LTO3, TSM 5.5, AIX 5.3. The library is >80% full, so, I'm concerned that starting collocation for the volumes will consume the rest of the library. Each filespace collocation may end up with one tape not full (or 30 in this case). Thanks, Bill Evans Research Computing Support FRED HUTCHINSON CANCER RESEARCH CENTER
