The Master Trace file is a supporting file for implementation of the endurance verification client workload and is used in conjunction with JESD219A. This Master Trace represents actual SSD activity over a period of seven months. It is used as the client workload for endurance verification per JESD218 of SSDs with user capacities greater than or equal to 64 GB. This Master Trace may be used as the Test Trace for endurance verification of a 128 GB to 256 GB SSD with its existing LBA range. This Master trace may be compressed or expanded to be used with capacities less than 128 GB or greater than 256 GB, respectively. The compressed or expanded Test Trace shall be applicable to SSDs with a maximum LBA that is less than or equal to 2x the maximum LBA of the Test Trace (e.g., a user capacity from 1x to 2x of the Test Trace capacity supported).