2010/2/8 Gerrit Kühn <ger...@pmp.uni-hannover.de>: > On Mon, 8 Feb 2010 15:43:46 +0200 Dan Naumov <dan.nau...@gmail.com> wrote > about RE: one more load-cycle-count problem: > > DN> >Any further ideas how to get rid of this "feature"? > > DN> 1) The most "clean" solution is probably using the WDIDLE3 utility on > DN> your drives to disable automatic parking or in cases where its not > DN> possible to complete disable it, you can adjust it to 5 minutes, which > DN> essentially solves the problem. Note that going this route will > DN> probably involve rebuilding your entire array from scratch, because > DN> applying WDIDLE3 to the disk is likely to very slightly affect disk > DN> geometry, but just enough for hardware raid or ZFS or whatever to bark > DN> at you and refuse to continue using the drive in an existing pool (the > DN> affected disk can become very slightly smaller in capacity). Backup > DN> data, apply WDIDLE3 to all disks. Recreate the pool, restore backups. > DN> This will also void your warranty if used on the new WD drives, > DN> although it will still work just fine. > > Thanks for the warning. How on earth can a tool to set the idle time > affect the disk geometry?!
WDIDLE3 changes the drive firmware. This is also how WD can detect you've used it on your disk and void your warranty accordingly :) - Sincerely, Dan Naumov _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"