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Level 2

384 points

Raid 0 boot drive in High Sierra

I’m still in need of Raid 0 boot support under High Sierra. I have a Mac Pro 5.1 with a Sonnet Tempo Pro Plus SSD card with two Samsung 850 EVO drives on it and really need to get that working as a boot drive again. If it’s just delayed while work is done on APFS then I’ll be patient and wait for RAID support for booting to come, and hopefully soon. I guessed it might arrive when APFS support for fusion drives comes. I can be patient so long as I know that functionality hasn’t been removed forever.

Posted on Jan 29, 2018 12:50 PM

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Kappy

Level 10

361,741 points

Posted on Jan 29, 2018 1:13 PM

First, you cannot perform a fresh install of macOS on any RAID array. A new macOS system installed on a single drive can be cloned to the RAID after which the array can be used as a boot volume. I have a similar setup here, however, I have formatted both SSDs as HFS+ rather than APFS. Therefore, I cannot go much beyond this since i do not know if an all APFS RAID would be a problem.

Create your array using the RAID Assistant in Disk Utility. It's selected from the Edit menu.

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Raid 0 boot drive in High Sierra

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