Mac Pro 6.1 (late 2013) with Sonnet ExpChasis + NVMe PCIe SSD

[faceoff]

Hello, everyone!
I 've got some stuff: Mac Pro late 2013, Sonnect Thunderbolt EchoExpress3 and main topic Intel P3700 PCI express (x4) NVMe SSD.

When my MacOS was 10.9.5 I am using a 3rd party driver and my SSD works well as second disk.
Then I read that i a new MacOS 10.13.x NVME SSD disk is a native , and no more needed 3rd party drive. Also I can use a new version of software for my work. But when I install a new Mac OS my SSD gone away, and Mac OS always start with panic kernel message. I try to find out a 3rd party driver again, but every where is said that it no more needed . May be some1 can advise me how to return workable state of my P3700?

 

[saulinpa]

Can you install clean 10.13 on internal drive with Sonnet disconnected? Make sure it updates Boot ROM. Then see what happens when re-attaching Sonnet.

 

[faceoff]

Thank you for advice!
I solve my problem with deleting some files at Library/Extension not only in System/Library/Extension. Because kextunload says that nothing being loaded.

But I receive next issue, with native apple driver read/write speed of SSD drop down from 1,5 Gbyte/s to 0.4 Gbyte/sec . Like NVME instruction do not work well.

 

[jacekkauch]

Check beta 10.13.4 It natively supports NVMe drives. Mine ExpressBox 1T with Apple SSD SSBUX results are as attached image.
Maybe some information from the following link would be helpful:
https://forums.macrumors.com/thread...lshark-carrier-board-storage-upgrade.2092108/