I’m jumping back in with an 830 (in week or so)….but with a couple of twists depending on if I can establish exactly when the theoretical P/E cycle count expires. Twist one; the workload will be 4K random full span. Twist two; once the theoretical P/E count has expired I will fill the drive up with data and checksum it. I’m then going to unplug the drive and leave it. I will check the data integrity every 3 months.

As a quick recap of the JDEC spec:

The SSD manufacturer shall establish an endurance rating for an SSD that represents the maximum number of terabytes that may be written by a host to the SSD

1) The SSD maintains its capacity
2) The SSD maintains the required UBER for its application class
3) The SSD meets the required functional failure requirement (FFR) for its application class
4) The SSD retains data with power off for the required time for its application class
The functional failure requirement for retention of data in a powered off condition is specified as 1 year for Client applications and 3 months for Enterprise (subject to temperature boundaries).

I’m not sure of the basis that determined the different requirements between 3 months for enterprise and 12 months for client applications. Presumably the variation is factoring the difference between how rapidly the SSD is written to as opposed to how much is written.