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Software vs Hardware RAID (gehirneimer.de)

submitted 9 months ago by BentiGorlich@gehirneimer.de to c/selfhosted@lemmy.world

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I am thinking of extending my storage and I don't know if I should buy a JBOD (my current solution) or a RAID capable enclosure.

My "server" is just a small intel nuc with an 8th gen i3. I am happy with the performance, but that might be impacted by a bigger software RAID setup. My current storage setup is a 4-bay JBOD with 4TB drives in RAID 5. And I am thinking of going to 6 x 8TB drives with RAID 6 which will probably be more work for my little CPU

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[–] poVoq@slrpnk.net 14 points 9 months ago (5 children)

Normally I would say software, or rather a raid-like filesystem like btrfs or ZFS. But in your specific case of funneleing it all through a single usb-c connection it is probably better to keep using an external box that handles it all internally.

That said, the CPU load of software raid it very small, so that isn't really something to be concerned with, but usb connections are quite unstable and not good for directly connecting drives in a raid.

[–] BentiGorlich@gehirneimer.de 2 points 9 months ago (3 children)

I mean I've been running the setup this way for >4 years and never had any problem with the USB connection, so I cannot attest to "usb connections are quite unstable"...

[–] poVoq@slrpnk.net 7 points 9 months ago (2 children)

I supposed that is because the JBOD box was handling the raid internally so short connection issues are not that problematic and can be recovered from automatically. But that wouldn't be the case if you connected everything together with a usb hub and usb to sata adapters and run a software raid on that.

[–] Auli@lemmy.ca 2 points 9 months ago* (last edited 9 months ago)

I don't know usb c in thunderbolt has direct access to pcie lanes.

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