nauip

Ah, it's still early here. I'm not reading terribly thoroughly, yet.
found.000 is where chkdisk throws "lost" files it finds on scan. For whatever reason the allocation table lost track of those files.I've never seen such a large number of them, but that's not to say it's not possible.
Review the folder delete whatever you don't need, move everything else to a Recovered folder within your pool and forget about it. If it happens again, then get worried.
If the condition of the disk is bugging you Stablebit Scanner is a good tool Stablebit sells, but there are free options that are just as good (but not automated) such as CrystalDiskInfo (my favorite tool). https://crystalmark.info/en/software/crystaldiskinfo

The LSI LOGIC LSI00276 6GB 16PORT adapter is a pretty good deal with the caveat that you will have the cables looping out and then back in to the case. When I got it @ $35 I figured I could deal with my already ugly closet server looking a lil bit funnier. And it's held up quite well.
Amazon no longer has them @ $35, but Server Supply has them at $60. That plus some cables and that's still under $100.
Amazon's cables to match: CableCreation Mini SAS 36Pin (SFF-8088) Male to 4 SATA ~ $15 each.
editing to add: I found another 8 port internal only @ $66 at the same place.

I have to search and look the fix for this up every time. Maybe the UI element to re-set the file system status could be made easier to find and understand? 
It seems like I have to manually set it to good, and then if I'd like Scanner to re-check it I set it to Unchecked and it should get checked on the next automatic scan.

This answered my question, too. Though I suspected I already knew the answer, it's helpful to be sure.

Silly Question - why don't you just back up the logical DrivePool volume? My DrivePool drive is V: - user data is under V:\Shares\Users.
V:\Shares\Users is monitored by Crashplan and backed up. And I just checked and I see v:\Shares\Users available for a 1 click restore.

One or more disks are overheating:

WDC WD30EFRX-68EUZN0 ATA Device - 86˚F (Maximum: 32˚F)  <--- Am I supposed to keep these drives in a meat locker?
Model: WDC WD30EFRX-68EUZN0
Serial number: 2020202057202d4443573443324e4b50544c3831 <---  

You are receiving this message because you have set up email notifications to be sent to this address from the StableBit Scanner.

 

I suspect it's pulling the value from the Minimum operating temperature, but I immediately checked the drives and they were all at 82.x˚F.

 

 
 

Silly Question - why don't you just back up the logical DrivePool volume? My DrivePool drive is V: - user data is under V:\Shares\Users.
V:\Shares\Users is monitored by Crashplan and backed up. And I just checked and I see v:\Shares\Users available for a 1 click restore.