On Sat, Aug 25, 2012 at 1:56 PM, Sašo Kiselkov <[email protected]> wrote: > On 08/25/2012 03:42 PM, Jordan McQuown wrote: >> I can say from experience chaining supermicro sas chassis with any type of >> disk can be a recipe for disaster. Lsiutil reported a couple million errors >> in a couple months time which eventually led to some sort of contention and >> corruption on both sides of our mirrors. These were also SAS and not sata >> disks. > > Have you checked your SAS cabling? Also, lsiutil is for lsi1068 (3G) SAS > chips. I've got a SuperMicro SC847 attached to a pair of lsi > sas2008-based boards. The chassis is internally arranged as a pair of > backplanes, each with two LSI SAS2x36, chained to appear as a single > connector from the back of the chassis (i.e. one connector per SAS > channel bundle for two fully redundant paths to the drives). Initially I > was having trouble with excessive link errors which resulted in poor > performance, lots of errors and generally lots of problems, but I found > this was caused by a faulty SAS cable between the host and the chassis. > Ever since playing around with cabling a bit it's been ticking reliably > like a Swiss clock. >
Good to know it is working for you, that is precisely the kind of setup I was considering. Did I understand you correctly that even with redundant paths to each drive, a single poor connection, despite a secondary good connection, caused serious performance problems? Thanks for the replies. Tim _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
