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How to auto remount external HDD after power loss to laptop server? (piefed.ca)
submitted 21 hours ago* (last edited 6 hours ago) by Lenna@piefed.ca to c/selfhosted@lemmy.world
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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.

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[–] Lenna@piefed.ca 1 points 9 hours ago (3 children)

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.

[–] Shimitar@downonthestreet.eu 1 points 3 hours ago

I was thinking of 2.5" inch USB drives powered by USB cables....

For 220v ones get a proper ups power strip. They are cheap about 50-60 bucks

[–] GeorgimusPrime@lemmy.world 1 points 4 hours ago* (last edited 4 hours ago) (1 children)

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 1 points 3 hours ago

Would this be something you're talking about? It's the cheapest one I can see on Amazon here in Canada.

[–] Landless2029@lemmy.world 1 points 7 hours ago* (last edited 7 hours ago) (1 children)

You have a 3.5" based HDD (aka desktop drive). many people use 2.5" drives (laptop drives) since they get power from the PC with just usb

[–] Lenna@piefed.ca 1 points 6 hours ago (1 children)

So that means it's not possible for me to power my 3.5" HDD with just USB, right?

[–] Landless2029@lemmy.world 1 points 5 hours ago

100% correct. You need a wall adapter. As many have said we all recommend a UPS (Uninterruptible Power Supply) or battery backup for your stack.

You can get the cheapest one if it's just short term outage or brown outs (grid low volting).

Based on your wattage the capacity of the UPS will dictate how long it'll last during an outage.