WD Purple Pro 22TB, WD221PURP

WD Purple™ Pro Smart Video Hard Drive

The WD Purple™ Pro HDD, with OptiNAND™ technology in 22TB1, delivers big capacity in a drive engineered for advanced, AI-enabled, always-on smart video recorders, appliances, and servers.
Western Digital's exclusive AllFrame™ AI technology improves ATA streaming to help reduce frame loss and improve overall video playback.
WD Purple™ Pro drives are optimized to handle up to 64 single-stream HD cameras2 as well as many of the latest smart cameras that transmit multiple streams.
With a workload rating up to 550TB/year3, these drives are built to keep up with heavy video data capture and analysis.
The reliable WD Purple™ Pro is engineered with an MTBF of up to 2.5 million hours4 for advanced smart video solutions that operate in 24/7 environments.
Western Digital Device Analytics™ provides a wealth of storage device parametric operational and diagnostic data to compatible systems.

TECHNICAL SPECIFICATIONS

Product Specifications

Model number
WD221PURP

Interface
SATA 6 Gb/s

Formatted capacity
22TB

Form factor
3.5-inch

Advanced Format (AF)
Yes

Recording Technology
CMR

RoHS compliant
Yes

Product Features

Maximum drive bays supported
No Limit

Camera Support
Up to 64 HD

AI Streams
32

Firmware Feature Name
AllFrame AI

Tarnish resistant components
Yes

Performance

Interface transfer rate (max) Buffer to host
6 Gb/s

Interface transfer rate (max) Host to / from drive
265 MB/s

Cache (MB)
512 MB

RPM
7200

Reliability/Data Integrity

Load/unload cycles
600 000

Annualized Workload Rate(TB/year)
Up to 550 TB/year

MTBF (hours)
2 500 000

Limited warranty (years)
5 years

Physical Dimensions

Height (max) (in / mm)
1.028 / 26.1

Length (max) (in / mm)
5.787 / 147

Width (± .01 in.) (in / mm)
4 / 101.6

Weight (± 3% ) (lb / kg)
1.48 / 0.67