Just in case someone is interested in these.
These SSD's have the 32,768 hour bug, meaning they will brick after passing 32,768 hours of run time. If possible verify they have the updated 2019-11 firmware from netapp or newer. They require that firmware, or else they will brick.
The A700 chassis also has a near bricking bug, the chassis will report low current for the NVME battery and disable the WAFL write cache. There is a firmware fix, but some units were not fixable by this patch and had to be replaced under contract.
The firmware fixes for both issues are locked behind the netapp paywall.
As for possible workarounds on the SSD bug, you could try flashing the Dell or HPE firmware, but who knows if this will work. It may very well brick the drive.
I'm not trying to knock the seller or anything, these could be modern firmware with the issues fixed. These are things you should just know before dropping this much cash on gear without that information being offered up front.