30-Day Free Trial!

How to use a SoftRAID startup volume with High Sierra

If you're using High Sierra, and booting up from a SoftRAID volume, you'll need to follow the steps given in this forum post, since the macOS High Sierra Installer does not recognize SoftRAID volumes as valid startup volumes.

Hello There, Guest! Register
SoftRaid Multiple Hangs During Certify + Slow
I just completed certifying five 6TB HDDs, but after hours to days SoftRaid would freeze up. I was able to resume the certify process each time, so after multiple (I estimate about 5-6 sessions), was able to finally finish. I'm running 5.7.2 on Mac OS 10.14.1.

Now I have another problem: the 6TB x 5 RAID5 volume (optimized for digital video) seems much slower than my previous 3TB x 5 RAID5 volume. I just tested using BlackMagic Speed Test and the new volume does 333 MB/s write, 411 MB/s read. IIRC, the old 3TB x 5 ran about ~490 MB/s write, ~900 MB/s read. The 3TB drives were 5 year old WD Blacks, the 6TB are Seagate ST6000DX000 7200 RPM drives (brand new but 4 yr old).
Same enclosure in both tests?
those seem like low numbers.
Is the volume clean when running this, or if it has data, how much data?

Forum Jump:

Users browsing this thread: 1 Guest(s)