immense delayed write to file system (ZFS and UFS2), performance issues

[Bruce Cran]

On Tue, 26 Jan 2010 20:45:10 +0200
Dan Naumov <dan.naumov at gmail.com> wrote:

> The disks are of exact same model and look to be same firmware. Should
> I be worried that the newer disk has, in 136 hours reached a higher
> Load Cycle count twice as big as on the disk thats 5253 hours old?

There's a similar problem with laptop HDDs and APM settings that cause
a high load_cycle_count too. According to
https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/59695 and
many blog entries, parking the heads frequently can shorten the HDD
lifetime.

-- 
Bruce Cran