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I set up a new volume using 4 SSD drives within an OWC enclosure. It's attached by thunderbolt to a Mac Studio Ultra running MacOS 13.4. I'm using SoftRAID 7.5 XT license that came with the enclosure. Formatted as APFS the RAID 5 reads and writes at over 850 MB/s, which is fine. However, formatting the volume as APFS encrypted slows performance to < 350 MB/s (often less than 300 MB/s). I'm using Black Magic Speed Disk Test and these numbers are for the 1 GB stress test only.
I generally like to have all my volumes encrypted but this performance is horrible. As a comparison, my Pegasus3 enclosure with spinning HDDs runs APFS encrypted with speeds of 1200 MB/s write and 550 MB/s read on the 1 GB stress test. What's the status of better support for encrypted drives using SoftRAID and MacOS Ventura? Thx.
This topic was modified 3 years ago by mwob
Posted : 16/08/2023 6:40 pm
We want this fixed also. My understanding is there is an issue in MacOS, we need a change to be able to get better HDD APFS encrypted support. When we get the fix in, no change in the volume will be needed. But encrypted APFS On HDD's do not have acceptable performance at this time.
Posted : 16/08/2023 8:47 pm
