Can Mac's Disk Utility create a single volume from multiple external SSDs? Can it grow the volume by adding more SSDs?

[eoren1]

Mac user for years and currently on 14" M1 MacBook Pro but have always used SoftRAID for externals.

Now looking to use an external in JBOD mode but wondering/hoping that Disk Utility would be able to create a single volume from 2-3 SSDs.

If it can, is it also possible to later grow the volume by adding another SSD without risk for data loss?

 

[Rich B22]

I've never actually done this myself, but had contemplated doing it at one time. See this link and the ones at the bottom of the article.

Add a disk to a disk set using Disk Utility on Mac

Use Disk Utility on your Mac to add a disk to a disk set to replace a damaged disk or to extend the storage capability of the set.

support.apple.com

 

[eoren1]

I've never actually done this myself, but had contemplated doing it at one time. See this link and the ones at the bottom of the article.

Add a disk to a disk set using Disk Utility on Mac

Use Disk Utility on your Mac to add a disk to a disk set to replace a damaged disk or to extend the storage capability of the set.

support.apple.com

Thanks for that link!
Unfortunately it cautions this:
Important: When you add a disk to a disk set, all the original files on the added disk are erased. Be sure to back up any important files on the disk before you add it to a set.