1. The driver update issue is a combo of High Sierra and the iMP ‘s Security enclave, this will get sorted out in an official capacity but in the meantime there is a workaround in that you go into recovery mode and change the security setting and the update works fine, it did for me.
2. Degraded write performance is specific to High Sierra’s sporadic and yet inadvertent choice to quarantine certified developers. There is a thread on Softraid’s site that gives the terminal commands to correct it. Again, not the final fix to be sure but until the next OS update it does the trick.
For what it’s worth, I have 5 Thunderbay cases running various sizes of Softraid RAID-5 and RAID-0. For the most part, all seem fine on my iMac Pro in terms of performance. There have been odd slow downs on writes at times but usually they are pretty consistent.
I did a backup of some 12TB of data in chunks that varied between 300GB to 6TB of data between two 4 drive 40TB RAID-5 arrays. Average speeds were between 500-750mb write and 700-950mb read.
Brand new hardware+ an OS that is pretty damn buggy and you will have issues. I’m in this for the long haul and can work with it as long as progress is made. I am also getting my work done very fast, did a full day ad shoot today with my Nikon D850, about 60GB of raw files. I manually turned up my fans to 2,000 rpms and blasted through it, client got the deliverables 24 hours early and I got my invoice in early as a result.
So far so good and well worth the coin.
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