I know that this has been well-discussed already, but it's been a few months - WD caviars with mpt/mpt_sas generating lots of retryable read errors, spitting out lots of beloved " Log info 31080000 received for target" messages, and just generally not working right.
(SM 836EL1 and 836TQ chassis - though I have several variations on theme depending on date of purchase: 836EL2s, 846s and 847s - sol10u8, 1.26/1.29/1.30 LSI firmware on LSI retail 3801 and 3081E controllers. Not that it works any better on the brace of 9211-8is I also tried these drives on.) Before signing up for the list, I "accidentally" bought a wad of caviar black 2TBs. No, they are new enough to not respond to WDTLER.EXE, and yes, they are generally unhappy with my boxen. I have them "working" now, running direct-attach off 3 3081E-Rs with breakout cables in the SC836TQ (passthru backplane) chassis, set up as one pool of 2 6+2 raidz2 vdevs (16 drives total), but they still toss the occasional error and performance is, well, abysmal - zpool scrub runs at about a third the speed of the 1TB cudas that they share the machine with, in terms of iostat reported ops/sec or bytes/sec. They don't want to work in an expander chassis at all - spin up the drives and connect them and they'll run great for a while, then after about 12 hours they start throwing errors. (Cycling power on the enclosure does seem to reset them to run for another 12 hours, but...) I've caved in and bought a brace of replacement cuda XTs, and I am currently going to resign these drives to other lesser purposes (attached to si3132s and ICH10 in a box to be used to store backups, running Windoze). It's kind of a shame, because their single-drive performance is quite good - I've been doing single-drive tests in another chassis against cudas and constellations, and they seem quite a bit faster except on random-seek. Have I missed any changes/updates in the situation? Thanks, -bacon -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
