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Multiple volumes on same physical drives

(@patrickbinaryalchemysoft-com)
New Member Customer

I just purchased a 4 tb (4, 1tb drives) SSD external drive for my 2013 Mac Pro running Sierra.

I am thinking about creating multiple RAID 0 volumes over the 4 disks.
3 would be 512 gb used to host multiple copies of OSX that I could boot from depending the task at The remaining space would be used for data.

Is this feasible?

Does this make sense?

Thanks!

-Pat

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Topic starter Posted : 08/12/2016 9:40 am
(@softraid-support)
Member Admin

Yes and Yes.

SoftRAID allows multiple volumes on the same set of disks, and they can be different RAID types. We have users doing this, including having individual Mac OS installs on each disk.

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Posted : 08/12/2016 3:15 pm
(@michaelprichard)
Active Member Customer

Yes and Yes.

SoftRAID allows multiple volumes on the same set of disks, and they can be different RAID types. We have users doing this, including having individual Mac OS installs on each disk.

Sorry to revive such an old thread, but I wanted to confirm this was still true in the age of non-bootable RAID volumes. I'm running a pair of Mac Mini servers still on 10.10.5 (Yosemite) and have been holding off on upgrading hoping that the ability to boot off of RAID would be restored. As that appears unlikely, I need a plan to migrate from my 1tb mirrored single volume to a boot/data volume pair. My ideal would be to shrink the current volume down to make space to create a boot partition on the same drive and do this on both drives. The boot partitions would be Apple Standard and the data partitions would be mirrored together with SoftRAID as before.

Does this work? Since the drive itself is now controlled by SoftRAID (as I understand it) will Catalina complain? Or as long as the SoftRAID controlled boot volume isn't part of a RAID array, all works fine? This would allow me to periodically clone my boot volume to mimic as closely as possible the current benefits of full boot volume RAID.

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Posted : 01/04/2020 10:01 am
(@softraid-support)
Member Admin

Sorry, no. Apple is obsessed with Startup security (Perhaps reasonably) and prohibits booting from RAID as part of the security feature set.

Maybe in a future OS, but I tend to doubt it.

SSD's are immortal, so why worry about Mirroring your startup volume?
That seems to be the thinking.

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Posted : 01/04/2020 10:05 am
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