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Raidz - ZFS (3 nvme drives) getting red hot when torrenting.

Featured Replies

Good evening,

Under normal usage I don't have any issues, but as soon as I fire up qBitorrent temps sky rocket as high as 85c

 

Can anyone help me understand why and how I can mitigate this, please? 

 

IMG_0837.thumb.PNG.ddc04a8dd6d4992f2b77e69b8885c199.PNG

  • Community Expert

This is just my opinion, but I think it was not a wise idea to make the EVO drives part of a RAIDZ pool.

EVO do not have the large caches of the PRO versions, they give up early if there is a lot of "hopping around" (although SSDs do not physically "step" they also arrange their writes into "close bundles" if possible.) they easily fill up and need to access the real storages. ZFS too tries to "optimize" this and so there is a vast load when writing data to random addresses on all drives.

Torrents are an additional thread because the data comes in in random order and needs to be rearranged almost every second.

This all sums up to mayor stress for the drives.

 

You should consider to use a seperate, single, drive with a non-sophisticated filesystem like xfs for your torrents.

 

  • Community Expert

zfs (or btrfs) are not great options for torrenting, due to being COW, would recommend downloading to a single xfs pool, then move the complete torrent to the zfs pool

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