On Thu, Feb 25, 2010 at 09:37:49AM +0100, Till Maas wrote: > Another possible explanation might be that the access pattern of the OS > is different, e.g. maybe the drive is not idle long enough to unload. > But since there is afaik no proper documentation about this issue, > everything is just guessing. access pattern was the problem in many cases. In theory it is possible to adjust how long data should be cached before written to disk, is there any central place in Fedora to do it? I do recall the UI from somewhere but not sure which distro and version. Once I tried that it did not appear to make a significant difference, but I did not try all the other possible tweaks like manual syslog configuration. Even if writebacks were delayed by 5 minutes it would still be 170,000 head parking cycles per year in the worst case so I think this solution would be interesting only in very few cases. Richard
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