RAID Set Unable to Mount

[LeonPro]

After upgrading to macOS Monterey, I realize the 2nd RAID set is not mounting and I am unable to mount it. The RAID name is showing up under Disk Utility, but when I click on "Mount" is gives me a message "invalid disk".

I am using a Sonnet M.2 4x4 Silent PCIe Card equipped with 4 x 2TB Samsung 970 Evo Plus. These are grouped into 2 sets of RAID. One is mirroring the other. Hence, once set of 2 x 2TB Samsung SSD is called Production HD and the other set of 2 x 2TB Samsung SSD is called Production Mirror HD.

Checking if someone has run into similar issues with this latest OS before I try and delete both RAID sets and start all over again.

See attached screenshot with the "Production Mirror" RAID set greyed out.

 

[LeonPro]

UPDATE: I solved it by deleting the offending RAID set. I clicked on the greyed out RAID in which case - "Production Mirror" then "Delete RAID". After which I ran RAID Assistant to re-do the RAID set with the same name.

Now it's online again. A glitch in upgrading OS, but gladly a minor hiccup.

 

[majortom67]

Disk Repair in Disk Utility didn't solve?

 

[LeonPro]

No, it couldn't do anything with it since it was greyed out.

 

[majortom67]

Have you considered Softraid for your raid system?

 

[LeonPro]

I'm avoiding more software as a work-around for software RAID especially if I only need RAID 0/1 and I don't have hardware RAID.

I'm fine with Apple's own software RAID built in their OS which has been performing with no issues until this Monterey update. But all is good again by deleting the RAID and re-adding the disks as a new RAID again.

 

[majortom67]

I've been using SR since many years and I believe is a masterpiece of sw for raid managing. Lots of usefull features (especially regarding monitoring and preventing drives failures) that Apple's raid doesn't have which make it really worthwhile. The only caveat is that since Apple has changed third party kernel extension managing in Big Sur, they're having a hard time in having it working in particular situations, mostly on raid 4 and 5. I gain nothing in suggesting it but I believe it's worth a try for just 50$ for the raid 1and 0 basic version and a 30 day trial is also available for testing it.
Have a nice time.

 

[Audiolinked]

Hello!

After upgrading to macOS Monterey, I realize the 2nd RAID set is not mounting and I am unable to mount it. The RAID name is showing up under Disk Utility, but when I click on "Mount" is gives me a message "invalid disk".

I am using a Sonnet M.2 4x4 Silent PCIe Card equipped with 4 x 2TB Samsung 970 Evo Plus. These are grouped into 2 sets of RAID. One is mirroring the other. Hence, once set of 2 x 2TB Samsung SSD is called Production HD and the other set of 2 x 2TB Samsung SSD is called Production Mirror HD.

Checking if someone has run into similar issues with this latest OS before I try and delete both RAID sets and start all over again.

See attached screenshot with the "Production Mirror" RAID set greyed out.

View attachment 1879345

Hello Leon,

I know your post is old now. But I have exactly the same configuration as you (Mac Pro, Sonnet M2 card and Samsung 970 Evo plus in raid 0) and I'm experimenting the same issue since I have update my system from Catalina to Monterey. After fresh install of Monterey and now try to update to Ventura, the issue is there. As you I have 4x Nvme Samsung 970plus 2TO configured in 2 drives A&B of 4TO in raid 0 for data. Sometimes the Drive A mount , B unmount, I shutdown and restart the B mount A unmount, sometimes the 2 drives A&B mount. I become crazy and I just saw you post.
Did you experimenting the same behavior before rebuild the Raid (sometimes one drive sometimes the other) ? I try to avoid to erase all data, but it seems I have no choice..
Did you rebuild only one raid drive ?

Thank you for your reply.

Audiolinked

 

[LeonPro]

Hey @Audiolinked , I ended up doing only one big RAID. The individual RAIDs kept disappearing despite rebuilding these from
scratch. I have spare SSD to move my files and no matter what I did they randomly would disappear.

Per what I see the latest OS can not handle separate RAIDs from these types of cards.

Unfortunately that’s the only sane solution.