Mac Server USB Drive Issues

My USB Drive stopped mounting due to "Disk Not Ejected Properly" multiple times. I checked the drive with Disk Utility and get the response below,

Running First Aid on “Channels DVR” (disk2s1)

Checking file system and repairing if necessary and if possible.
Volume is already unmounted.
Performing fsck_hfs -fy -x /dev/rdisk2s1
Executing fsck_hfs (version hfs-650.140.2).
Checking Journaled HFS Plus volume.
The volume name is Channels DVR
Checking extents overflow file.
Checking catalog file.
Invalid sibling link
Rebuilding catalog B-tree.
The volume Channels DVR could not be repaired.
File system check exit code is 8.
Restoring the original state found as unmounted.
File system verify or repair failed. : (-69845)

Disk Utility cannot fix the issue. Can any recommend a fix and/or software?

Assuming you want to try to recover the information on the disk, since it's HFS+ you could still use DiskWarrior.

But "disk not ejected properly" sounds like there may be an underlying hardware problem that recovery software isn't going to fix. Is this a hard drive or SSD? Bus powered or a separate power brick? Your computer (particularly if connected to the drive through a hub) not providing enough power for bus powered hard drives or the power bricks dying are pretty common, so would eliminate those first if you haven't already.

Thanks for your reply. I had my USB WD My Passport non-SSD drive plugged into a small USB-C hub bus-powered. I think that was my mistake. It should have been plugged into the Mac mini port directly. After a few of the "Disk Not Ejected Properly", it wouldn't mount up. Disk Utility can run Disk First Aid, but it can't fix the drive. Disk Drill sees the drive and even the lost partition, but it takes 14 hours for the detail scan to complete. I've heard of Disk Warrior and purchased v3 years ago. I guess that's my best bet to fix the format structures and errors.

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