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Forum Discussion
Why are my NAS's disks spinning up after ~2 1/2 hrs sleep?
Hi. I've very recently bought a ReadyNAS Ultra2 and stuffed it with 2x2TB (WD Caviar Green) disk. SW: RAIDiator 4.2.19 Addons: ReadyNAS Photos II, ReadyNAS Skifta, ReadyNAS Remote and EnableRootS...
In my quest to find the cause for my own "spin-ups after 0 minutes", it seems a function (weakness) of noflushd that is responsible for the spin-downs. From a man page I found:
There is a newer version of noflushd that is available vs. that which is used in the ReadyNAS, but I dunno if it will help or not. In the meantime those of us who worry about this issue have been left to dangle by Netgear, and AFAICT the only alternative is to let 'em spin 24/7.
Journaling filesystems like ext3, or reiserfs bypass the kernel’s
delayed write mechanisms and write straight to disk. Therefore
noflushd is unable to postpone writing of journaling data. As a
result, expect lousy spindown behaviour when working off
ext3/reiserfs/... partitions.
There is a newer version of noflushd that is available vs. that which is used in the ReadyNAS, but I dunno if it will help or not. In the meantime those of us who worry about this issue have been left to dangle by Netgear, and AFAICT the only alternative is to let 'em spin 24/7.
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