SMART IoT

S.M.A.R.T, short for Self-Monitoring, Analysis, and Reporting Technology, is a monitoring system designed for early error detection in flash storage devices like solid-state drives (SSDs). SSDs use NAND flash memory, which stores data by moving electrons. However, repeated write cycles can gradually degrade the NAND chips, limiting the lifespan of the drive.

SP Toolbox

Understanding SSD Endurance
Two key metrics are used to estimate SSD endurance:

Total Bytes Written (TBW): Calculated using the formula:
TBW = Physical Capacity × NAND Program/Erase Cycles ÷ Write Amplification Factor ÷ Wear Leveling Factor.
Drive Writes Per Day (DWPD): Defined as: