How to auto remount external HDD after power loss to laptop server?
from Lenna@piefed.ca to selfhosted@lemmy.world on 19 May 21:36
https://piefed.ca/c/selfhosted/p/733454/how-to-auto-remount-external-hdd-after-power-loss-to-laptop-server

I’m running a Ubuntu server on my old laptop with an external HDD connected to it. The external HDD is powered independently from the laptop, as it is plugged into the wall.

During a power outage, my laptop remains operational due to its battery, but the HDD shuts down. When power is restored, my laptop does not automatically remount the HDD, and I have to reboot the system manually to access it.

Does anyone know how I can resolve this issue?

Edit: Not sure if this added context changes anything, but this is the HDD I’m using. It’s a 3.5” HDD that gets its power directly from the wall.

#selfhosted

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Shimitar@downonthestreet.eu on 20 May 07:04 collapse

In short: buy a cheap ups power strip or a generous USB powebank capable to being under charge 24/7 and do not let the HDD switch off on power loss…

That is a guaranteed recepy to destroy your data and possibly the hardware as well as spinning disks don’t like abrupt shutoff and that applies to data being written on SSDs as well.

Remounting after the power resumes is the last of the issues, easily fixed by a amount/mount command with the proper fstab setup.

Lenna@piefed.ca on 20 May 09:41 collapse

Do you have a USB power bank you can recommend? My external HDD requires a wall plug and I’ve never seen a USB power bank where I could plug my HDD into it.

GeorgimusPrime@lemmy.world on 20 May 14:40 collapse

There are DC UPSes that can supply 12V and are typically used to keep wireless routers and security cameras running for a few hours during power failures. They plug into the mains and are about the size of a 3.5" HDD.

Most USB power banks power cycle when the switch between charging/supplying/pass through mode, so if you use them for computer equipment they will lose power for a few seconds when the mains comes on or off.

Edit: DC UPSes are also much cheaper than standard ones.

Lenna@piefed.ca on 10 Jun 21:31 collapse

Hey there! A moderator just restored my post and you probably never got the notification for my previous comment. I was just wondering if this is the UPS you had in mind.