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TrueNAS Scale, hard disks, and pools (piefed.social)

submitted 2 weeks ago by Flamekebab@piefed.social to c/selfhosted@lemmy.world

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I'm trying to run a load of services and use TrueNAS Scale as the data storage for them. I have three 1 TB disks setup as RAIDZ1 - a single data pool. I've had to unplug the power a few times for various practical reasons and it seems like this setup simply cannot be relied on to function. Sometimes it's fine, sometimes it's not. I feel like I'm taking crazy pills here and cannot for the life of me figure out what I'm supposed to be doing.

I take a look at the storage dashboard and see "Unused disks: 3". Okay, let's add them back to my pool ("main"):

Add Disks To:

New Pool
Existing Pool

...except there's no pools listed under "existing pool". If I create a new one it just wipes the disks. That's no bloody good.

Thankfully I've yet to store any important data on them as I'm still in the testing phase. As far as I can see though, despite the disks being attached to the system by serial number, it gets confused and doesn't keep them through power disruptions.

Is it worth fannying about with TrueNAS? I feel like I might as well just bin ZFS and use an rsync-based backing up of data (I have several other disks, but only three that are the same size).

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[–] Flamekebab@piefed.social 2 points 2 weeks ago (2 children)

These are internal drives connected to a desktop PSU wired to a USB interface to connect to the laptop.

[–] 4am@lemm.ee 2 points 15 hours ago

Therefore the laptop is the disk controller and if you gracefully shut down the OS it will take care of all the housekeeping tasks to prepare a disk for safe shutdown (flush cache to disk, park heads on spinning rust, etc) and then it will be safe to turn off the PSU.

[–] Legume5534@lemm.ee 1 points 1 week ago (1 children)

Wtf man just build a proper Nas at this point.

[–] Flamekebab@piefed.social 1 points 1 week ago

What's so WTF about it? I'm repurposing old hardware and testing out the concept. I'm not shelling out a pile of cash on something that might not work for me.