DWPD — Drive Writes Per Day
Definition
An SSD endurance metric measuring how many times the full drive capacity can be written every day for the duration of the warranty period (typically 5 years).
Context & Usage
A 3.84 TB drive with 1 DWPD endurance can sustain 3.84 TB/day of writes for 5 years (about 7 PB total writes). DWPD tiers: 1 DWPD = read-intensive (general data tier), 3 DWPD = mixed-use (databases, vSAN), 10+ DWPD = write-intensive (cache, journal drives). Most enterprise SSDs in 2026 are 1 DWPD because typical workloads use much less than that.
Examples
- Samsung PM893 (1 DWPD)
- Samsung PM1735 (3 DWPD)
- Intel Optane P5800X (60+ DWPD)
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