I’m not certain how reliable my current Drobo 5D3 is, nor how long it will be supported by Drobo or Apple (boot warnings from macOS that the kernel extension may not be supported in future OS releases). Restarted the Mac today and the Drobo failed to mount. I received an OS warning that the drive was not readable. I opened the Drobo dashboard and it showed only one drive in the 5D3, but the physical enclosure showed all 5 drive bays green. I rebooted the 5D3 via Drobo Dashboard and then everything mounts and shows green as if nothing has happened. I think I have been running this enclosure since about 2012 so it could be about time for it to go. I had hoped to replace it with an 8 series, but it seems this may die before any new Drobos are made.
Does anyone have any suggestions for Thunderbolt 3 or 4 replacement enclosures that can support 40+ TB?