HPE P18420-B21 240GB SATA 2.5" enterprise SSD

Enterprise SATA SSD for read-intensive workloads

The HPE P18420-B21 is a 2.5-inch solid-state drive built for server environments that prioritise consistent read performance. Its 240GB capacity suits boot volumes, caching tiers or logging arrays where write demands stay moderate. The SATA III interface ensures broad compatibility with existing drive bays and controllers. This new drive targets administrators who need reliable endurance without the cost of mixed-use or write-intensive media.

Low active power and silent operation

With an active power draw of 4W, the drive adds minimal thermal load to a populated chassis. The 7.00mm height fits standard SFF bays without requiring additional spacing or airflow planning. No moving parts means zero acoustic output during normal operation. These characteristics simplify cooling design in dense 2.5" deployments where many drives share a backplane.

Steady random performance under sustained load

The drive delivers up to 69,500 4KB random read IOPS and 14,000 4KB random write IOPS when workloads remain continuous. Endurance is rated at .8 DWPD, so write-heavy bursts must stay within that daily budget to avoid premature wear. Performance remains stable as long as the queue depth and temperature stay within enterprise specifications. Workloads exceeding the write endurance should consider a higher DWPD model.