JonathanM

I would rethink that strategy, as it will propagate any and all corruption and accidental deletions, probably before you can catch them. Much better to have a real backup with versioning.

Use a poor man's mechanics stethoscope, hold the handle of a screwdriver against your ear, and LIGHTLY touch the tip to each drive. Or, use a real one, they're dirt cheap.

Does it occur with the stock Unraid installation, or only when the plugin is installed? If the plugin causes the issue, the plugin needs to be fixed, not Unraid.

Need more info. Recycle bin plugin running when this happened? File deleted by smb client? If not, the only way I know to undelete files is third party file recovery software like UFS Explorer.

Most likely the CPU is "busy" waiting for I/O from the disks.

One quick nit, the terminology "expander" doesn't quite fit what you really need at this stage. You are really looking for a HBA controller, the word expander is more typically used for a special piece of equipment that connects to the HBA and splits the ports to allow many more drives. They don't work by themselves, they must be connected to a compatible HBA. I'd hate for you to find a "deal" on an expander only to find out it's not going to work for you as is.

Have you already gone through the AMD checklist of things to look for like idle settings and disabling XMP?

If you assign all the drives exactly as they were, you can select "parity is already valid". It would still be a good idea to check parity though.

@SpencerJ? Perhaps try again in a little while?

This exactly.

Media downloaders and players have been known to delete files in certain circumstances. Misconfiguration and exposure to WAN without proper security come to mind. For instance, Plex has a setting to delete files after they have been viewed. If that is set, all files with a viewed status will be deleted during routine file maintenance.

Unraid assumes any multi-drive pool is redundant, since that's the default setting. It's a known issue.

Go to the apps tab and search "torrent"?

Is the device you are trying to access it from get an IP on the same subnet? Can you ping Unraid's IP from that device?

Use the webGUI

Not recommended, be sure you keep good backups. See the RAID section of this article, and many others. https://itsfoss.com/btrfs/

What address are you using to access the server?

If you were using a full version of nginx I think it would be a simple matter of adapting the config shown in the tutorial into your config. The swag container from LSIO is one such example. Since you are using the NPM container I have no clue if you can tell it to do all the bits and bobs required. NPM is great for simple stuff, but it's not as configurable as a full blown nginx install.

Can't you script from the power draw reported through the TPLink smart socket? If watts > 50 turn on fan or something like that? Alternatively, many smart power strips have a master / slave outlet system where if the master socket is drawing power the slaves are automatically switched on.

Most likely, since the underlying mechanism hasn't changed much. It's the same process as the disk format conversion, and there are multiple different ways to accomplish it, but they all involve getting one drive empty, formatting it, copying data from the next drive to be formatted, etc. BTW, if you are planning to run encryption, make sure your backup strategy is complete and as foolproof as you can get it, because if you have an issue, recovering data from encrypted volumes is orders of magnitude harder, so it's best to just restore from backup if you have an issue. Parity is NOT a backup, it's realtime, so if something corrupts your data, or a drive fails and one of the other drives has an issue while rebuilding the failed drive, you are sunk without backups.

Best practice to keep names simple, too many different requirements to use special characters across multiple OS and share protocols. A character that works for one combination may not work for another, or need different special treatment. Ideally you would be restricted from creating disallowed names, but not all cases have been caught.

Unraid doesn't use RAID1 or RAID5 for the parity array. Or are you a bot/spammer account?

Maybe, if you can get access to the webui with Unraid's current IP. If not, try using another machine temporarily set up with a static IP in the same subnet as Unraid connected with a cord from eth0 on Unraid directly to the ethernet port on the PC. If all else fails, a short press of the power button on the Unraid box will initiate a proper shutdown, if you do that I'd shut down the VM first.