Replaced disk on RAID 5 and the it failed to rebuild. - Functionality Issues https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/ SoftRAID Discussion Board en-US Tue, 21 Apr 2026 08:34:11 +0000 wpForo 60 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22584 Thu, 31 Oct 2024 15:02:26 +0000 That worked. Disk was rebuilt successfully and seems to be working normally now after being added to the existing volume. Thanks for the help!

]]> Functionality Issues KyleNap https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22584 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22577 Wed, 30 Oct 2024 13:42:31 +0000 @kylenap 

Because of your issues, make sure your backups are up to date. then initialize that disk and use "Add disk".

]]> Functionality Issues SoftRAID Support https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22577 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22576 Wed, 30 Oct 2024 03:29:09 +0000 On this second try, the disk successfully certified with 0 errors. Is the next step trying to add the new disk to the volume? If so, is there anything special I should do?

]]> Functionality Issues KyleNap https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22576 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22573 Tue, 29 Oct 2024 04:10:04 +0000 Actually, an update. I restarted the certification again and so far it's been going for quite a few hours. Have it complete 3 passes, so I'll see if it completes. 

]]> Functionality Issues KyleNap https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22573 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22572 Mon, 28 Oct 2024 20:42:34 +0000 Left the Time Machine mounted and tried certifying the disk, but it failed again after about 20 mins saying that it hung. 

]]> Functionality Issues KyleNap https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22572 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22571 Mon, 28 Oct 2024 20:34:03 +0000 @kylenap 

If you want it unmounted, that is OK, either way.

]]> Functionality Issues SoftRAID Support https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22571 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22570 Mon, 28 Oct 2024 16:00:01 +0000 Ok, I'll try that. Should I keep the Time Machine unmounted during the certification process, or can it remain mounted? I have Time Machine mounted again so it can backup, but haven't touched the disk I just zeroed sectors on.

]]> Functionality Issues KyleNap https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22570 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22569 Mon, 28 Oct 2024 15:56:16 +0000 @kylenap 

Certify the disk is my recommendation.(36 hours or so to do this)

Plug in the Time Machine disks. Make sure the volume mounts. If so, initialize the disk now with SoftRAID, then click on Time Machine and "Add disk" and let it rebuild.

]]> Functionality Issues SoftRAID Support https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/paged/2/#post-22569 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/#post-22568 Mon, 28 Oct 2024 13:58:21 +0000 That worked. Was successfully able to zero sectors of the the new disk. What are the next steps?

]]> Functionality Issues KyleNap https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/#post-22568 RE: Replaced disk on RAID 5 and the it failed to rebuild. https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/#post-22566 Mon, 28 Oct 2024 04:02:06 +0000 @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.

]]> Functionality Issues SoftRAID Support https://forums.softraid.com/softraid-8-functionality-issues/replaced-disk-on-raid-5-and-the-it-failed-to-rebuild/#post-22566