P09720-B21 HPE 960GB SATA Mixed Use SFF RW DS SSD

P09720-B21 is the HPE 960GB SATA 6G Mixed Use SFF (2.5in) RW 3yr Digitally Signed Firmware SSD. Its spare, P09911-001, is described in PartSurfer as a 960GB SATA SSD, 2.5-inch SFF, mixed use (MU), Read Write (RW), Digitally Signed Firmware (DS).

That spare record is where HPE spells out RW as Read Write. The option name has no carrier code such as SC or BC, and the where-used list shows only the drive, a reman version and a "ZHPE" twin, so HPE's parts records do not tie it to a particular server. Order by the spare number on the failed drive.

Two other options in this range use the same description, which is why the spare number matters more than the title when you match a replacement.

For HPE, DWPD is the maximum number of 4K host writes to the whole drive per day over five years; Mixed Use drives fall between 1 and 10. Spares pulled from service near their write limit should not sit unpowered for long, since HPE rates retention at 3 months at maximum endurance.

Fit check: P03598-B21 is the same description under an earlier option number, and P44012-B21 is the 960GB MU drive in the BC carrier for Gen10 Plus cages.