FWIW. I use 4 intel 32gb ssds as read cache for each pool of 10 Patriot Torx drives which are running in a raidz2 configuration. No Slogs as I haven't seen a compliant SSD drive yet.
I am pleased with the results. The bottleneck really turns out to be the 24 port raid card they are plugged into. Bonnie++ Local read about 750 MB/sec rewrite about 450 MB/sec Write about 600 MB/sec if memory serves. A SQLio test run from a fibre connected vmware guest reached over 16,000 IOPS for 8k random reads. Because the vmware host only has a 4gb Fibre card max reads were limited to a hair under 400 MB/sec. Useing several guest on two VMware host machines achieved 690 MB/sec reads combined. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
