Q: Thunderbolt disk very slow after 10.12.5 update
I have installed the 10.12.5 system update 2 days ago.
After the restart, my external "My Book Thunderbolt duo" RAID-1 array was marked degraded - as usual with Sierra updates. I have waited almost 2 days to see the array online again.
Sadly, the disk I/O are very slow : according to BlackMagic app, no more than 4 MB/s.
The array is connected to thunderbolt 2 cable to my Mac Pro computer. The cable is alone on its bus. I have tried the 3... no changes.
Despite restarts, impossible to get reasonable speed.
I have opened an assistance ticket to Apple.
Anybody in the same situation ? Mac OS stability is really poor now...
Mac Pro, macOS Sierra (10.12.5)
Publiée le 20/05/2017 00:11