Hi ubuntu_demon wrote: > * while disk temperature of 59 and 60 degrees don't change the apm.
60 seems to be a fairly common *maximum* operating temperature for disks. Allowing it to rest at 59/60 seems like a bad idea. Hitachi quote that (with their drives) for every degree you go above the maximum temperature the failure rate rises 2-3%. If your drive gets to 60 and stays there, you are leaving basically no headroom and it may well rise above the maximum rating until your "fix" notices and enables a power saving mode, which may well take some time to bring the temperature down. If your drive were rated for a maximum of 55 degrees and we allow it to run at 60, the failure rate could potentially be 15% higher than normal, all in the name of fixing something (head unparks) that probably wasn't a problem in the first place. FWIW, I forgot to mention in my previous post that the temperature information is often also present in SMART output. -- Chris Jones -- High frequency of load/unload cycles on some hard disks may shorten lifetime https://bugs.launchpad.net/bugs/59695 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
