On Tue, 28 Jul 2009, Marc Cousin wrote: > At peak during the night, we have around 40-50 write streams at the same time, > and we are despooling to 3 LTO3 and 3 LTO1.
That's larger than my installation and I haven't got budget for a dedicated array controller. We're using software striping on our disks. > I think the most important is : don't purchase anything without doing > benchmarks first for this special type of activity. That's what we did : we > wrote a small program to simulate the expected throughput on the array with > several streams, and only bought the array when we were satisfied with its > performance, which required a bit of tuning (choose the right filesystem, the > right scheduler, tune read ahead...). And I think this time wasn't wasted at > all... You're right, it isn't. The main criterion is keeping up with the tape drive(s). Right now we are, but that will change with a new robot purchase and that's why I'm looking ahead. AB ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
