Replaced disk on RAID 5 and the it failed to rebuild.

This appears to be a bug in SoftRAID App:

2024.10.24 - 10:08:15 - SoftRAID Application: Certifying the disk disk11, SoftRAID ID: 0A6D9164C129D480, USB3 bus 0, id 4. with 3 passes and 15 minutes of random access testing. During each pass, every sector on the disk is filled with a pattern. Then the pattern is read back and verified.
2024.10.24 - 10:08:40 - SoftRAID Application: The certify disk command for disk disk11, SoftRAID ID: 0A6D9164C129D480, USB3 bus 0, id 4 completed successfully.

The certify failed, it appears, not passed. Can you initialize this disk with Disk Utility? I believe it is a faulty drive.

When I try to Erase the disk in Disk Utility is fails and shows this:

 Very strange since when I first installed the disk, everything went fine until I started rebuilding the volume. 

@kylenap 

Disk Utioity often fails erasing SoftRAID volumes.

1. Make sure if it is HFS, you erase it as HFS (MacOS extended) If APFS, erase as APFS

2. Manually unmount the volume first.

let me know.

Unmounted the volume in SoftRaid, then tried to erase the drive as HFS (since this volume is used as a Time Machine) and I still get the same error as the post above. 

@kylenap 

You need to disable auto backup in Time Machine, it keeps it permanently mounted otherwise.

Disabled auto backup and tried again and still the same result. Even tried restarting the computer, checked that it was still unmounted, and get the same error message in disk utility every time. 

@kylenap 

You unmounted the disk? Can you zero disk in SoftRAID?

Last night I actually tried certifying the disk again and it did complete it successfully. I then tried zeroing the disk and I keep getting an error. I checked and SoftRaid has Full Disk Access in the macOS settings. Here is a screen recording of the error I get: https://f.io/LDq0z33v

@kylenap 

When you certify a disk, it should have a ? in the disk tile. this indicates you initialized the disk, after certifying it?

This screen recording was taken after I certified the disk last night and tried zeroing out the disk as you said. I assuming that's why there is no longer a question mark on that disk on that screen recording. I recorded that to recreate the error I was getting after trying it once already. 

@kylenap 

A certify takes almost two days with those drives. I saw a bug in SoftRAID where it reported as completed after a short period of time.

When you certify the drive has no partition map and will have a ? on it. Unless you initialized the drive, which puts a partition map on the disk, it will still have a ?. So the drive you just tried to "Zero disk", either was not certified, or you initialized it.

Support files are always preferable to anything else you can provide.

Attached it the support file I just created. Let me know what next steps you would like me to try after you take a look at it.

@kylenap 

I assume your Time Machine volume can mount? If it does not, no point in going further.

If it can mount, unmount it. shut down. Pull out the two working disks. (You can use blink disk light to identify them)

Now you should be able to "Zero disk" on the new disk. It is already part of the Time Machine volume, but I think the problem is the Tim Machine never mounted while it was connected, so there are no rebuild IO's yet. So the disk is "busy" as it is seen by MacOS as active.

That worked. Was successfully able to zero sectors of the the new disk. What are the next steps?