On Sun, Aug 7, 2011 at 3:40 AM, Roy Sigurd Karlsbakk <r...@karlsbakk.net>wrote:
> Then why do Hitachi and Seagate drives work flawlessly for me? We have some > slow Seagate drives (ST32000542AS) in two chassises, and those just work. > Another server, using Hitachi HDS721010CLA332 drives also just works - one > dead drive during burn-in, and that was all. Western drives on direct attach > works, but with SAS expanders, we get I/O errors (as reported by zpool and > iostat) on high load. > The phrase "slow" makes me wonder if this is a speed mismatch. I have some Western Digital SATA drives (RE and RE2 series) on 3ware 9500-series RAID 5 controllers. These are SATA2 (300 MB/s) drives, but the controllers are 150 MB/s only. If I don't set the jumpers on the drives to limit them to 150 MB/s, they get kicked out under heavy load. The jumper for this is usually labeled OPT1. I don't know if it's supported on all newer drives or not. Here's an image from Western Digital explaining the jumper options: http://support.wdc.com/images/kb/sata.gif -- David Brodbeck System Administrator, Linguistics University of Washington _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
