MP 7,1 Occasionally seeing Sonnet/Samsung PCIe x16 4TB HFS+ RAID-0 device dropping offline on MP7,1 (twice over past 2 months or so)

[bxs]

Subject: Occasionally seeing Sonnet/Samsung PCIe x16 4TB HFS+ RAID-0 device dropping offline on MP7,1 (twice over past 2 months or so)

On my MP7,1 I have installed in a x16 lane PCIe slot a Sonnet card containing 4 Samsung 1TB 970 EVO Plus Pro blades. These 4 blades are configured as HFS+ RAID-0 and provide/deliver a huge I/o rate of around 6,000 to 7,000 MB/s. It works wonderfully well with the Adobe software editing chores.

Over the past few months the device mysteriously drops offline; no data loss, but requires a Restart to get it back online. This has happened under latest Catalina release.

It's an annoyance, but not earth shattering as every 4 mins the Adobe software captures a checkpoint for recovery that has been useful for dealing with this event.

This off lining event appears to me to be much like the improper disk ejects that were so common in the past.

The Sonnet card...
https://www.amazon.com/gp/product/B07Q338R93/ref=ox_sc_act_title_2?smid=AFZIU1SXEW341&psc=1

The Samsung 970 blades
https://www.anandtech.com/show/13761/the-samsung-970-evo-plus-ssd-review

 

[bsbeamer]

SIMILAR issues with MP5,1 have been documented using Apricorn Solo X2 and Apricorn Duo X2 with SATA SSDs in non-RAID setups. Personally believe it is a macOS issue and not hardware-related or specific to certain machines. Often the drives were still accessible through Terminal, some FTP clients, and via other non-Finder methods.

 

[orpheus1120]

Disable sleep.

 

[H. Flower]

I have same setup and same occasional problem and I'm pretty sure it's because the firmware on one of my blades is old.

Check to see your firmware....

 

[choreo]

I have the same set-up but with this card: https://www.sonnettech.com/product/m2-4x4-pcie-card/overview.html

I have not seen that problem yet. My 7,1 restarts itself often enough to where it may not have time to manifest itself?