In my case the head-parking and the power-on (real power on) values are the same, seems that I have that feature disabled.
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 76 9 Power_On_Hours 0x0032 086 086 000 Old_age Always - 12291 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 80 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 80 On 16/09/2012, at 00:13, Carlos Alberto Lopez Perez <clo...@igalia.com> wrote: > On 15/06/11 22:15, Paul Faure wrote: >> I upgraded my raid disks to 4 ST32000644NS (Seagate Constellation 2TB) and I >> haven't had an issue since. >> >> I have also moved the cheaper ST2000DL003-9VT166 disks to a Windows XP box >> (in a non raid environment) and haven't seen a problem in days now. >> >> There are plenty of references online now popping up saying that green disks >> are not designed or supported in a raid environment. Weather or not that's >> because of a physical issue, or a software issue, im not sure. >> >> Paul >> > > Just a guess: One of the "features" of green drivers is that they park > the heads every few seconds [1] without disk activity. Can this be the > root of the problem? > > Perhaps the HDDs are slow responding when they have the heads parked > (which tends to happen too much often than with normal drives) and this > causes this issue. > > > You can disable this by forcing a one-hour timeout for parking the heads > with: > > hdparm -S 242 /dev/sdX > > > This needs to be done at boot time each time. Perhaps an init.d script > would help. > > You can check the SMART attribute 193 of your drives, which tells you > how many times the drive has parked the head in its life. You will see > that this number is far greater on such "green drivers" than on normal > drives. > > smartctl -a /dev/sdX | grep 193 > > > Regards! > -------- > > [1] http://forums.anandtech.com/showthread.php?t=2085685 > -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/bc431625-d488-4229-bdfa-a7da9e108...@claunia.com
