Write speed dropped by 35% after updating to macOS 14/SoftRAID 8 - Known Issues https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/ SoftRAID Discussion Board en-US Tue, 28 Apr 2026 07:13:04 +0000 wpForo 60 RE: Write speed dropped by 35% after updating to macOS 14/SoftRAID 8 https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21682 Sat, 04 May 2024 20:21:45 +0000 @burningman 

You cannot view it, as it is part binary (an emulator that lets us view SoftRAID as you see it)

We have an FAQ here that describes what is in it.

We do not have a disable-able write cache, no.

I do not know anything that would cut performance, so let me look at a support file, I can maybe make a guess.

]]> Known Issues SoftRAID Support https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21682 RE: Write speed dropped by 35% after updating to macOS 14/SoftRAID 8 https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21679 Sat, 04 May 2024 08:12:19 +0000 How can I inspect the content of the the .sr_supt file? As I updated to macOS 14, I won't be able to generate one for macOS 13.

I also had occasional runs where AJA showed ~2.5GB/s write, but at about 75% of the 64GB would drop down and end up with the ~1.3GB/s average. Is there some write cache involved that becomes full at ~40GB?

]]> Known Issues BurningMan https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21679 RE: Write speed dropped by 35% after updating to macOS 14/SoftRAID 8 https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21670 Mon, 29 Apr 2024 18:10:33 +0000 I need to know what is different about the two scenarios. Send a SoftRAID support file from each.

Also note if any cabling is different, and if either is using a dock.

]]> Known Issues SoftRAID Support https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21670 Write speed dropped by 35% after updating to macOS 14/SoftRAID 8 https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21660 Sun, 28 Apr 2024 14:58:49 +0000 2xThunderBay 4 mini (connected each directly to MacBook Pro M1), 8 drives, RAID0, AFPS encrypted, AJA (5K Red, 64GB, 16bit RGBA):

macOS 13, SoftRAID 7.5:

2492

macOS 14.4.1, SoftRAID 8:

2493

Any ideas?

 

]]> Known Issues BurningMan https://forums.softraid.com/softraid-8-known-issues/write-speed-dropped-by-35-after-updating-to-macos-14-softraid-8/#post-21660