On Sat, 2010-12-18 at 16:37 +0800, Ian Chapman wrote: > You might also when to check the head load cycle count with smartctl > > smartctl -a /dev/sdX | grep Load_Cycle_Count > > They have stupidly aggressive power saving which as I understand it > cause many unnecessary head parks, depending on the workload of your > system. For example one of my drives hit over 240,000 cycles in 6 > months before I became aware of it. By comparison another 4 year old > drive is currently only showing 70,000 cycles. There's a tool from WD > which lets you alter how aggressively it parks the heads. > Unfortunately it's a vendor specific setting the firmware so you can't > use a standard linux util to change it.
I had the same issue with a laptop. The internal drive parking itself after a few seconds, and Linux waking it up every few seconds, rinse lather repeat. Luckily, I could issue a command to change the power saving on the drive. Unfortunately, I have a similar problem with an external drive, but thankfully the timeout period is much longer, since the drive enclosure's interface blocks any attempt to directly configure the drive. One of those Seagate Desktop Expansion drives, so I can't really recommend them. -- [...@localhost ~]$ uname -r 2.6.27.25-78.2.56.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
