Western Digital Gold 22TB 3.5' Enterprise Class SATA 6 Gb/s HDD 7200 RPM Cache Size 512MB 5-Year Limited Warranty
Part Number: WD221KRYZ
Product Features
Capacity1: 22TB
Interface: SATA 6 Gb/s
Format: Sector size (bytes)2: 512e
Native Command Queuing: Yes
Form Factor: 3.5-inch
OptiNAND™ technology: Yes
ArmorCacheTM: Yes
RoHS compliant3: Yes
Performance
Data Transfer Rate4 (max sustained transfer rate)
MiB/s / MB/s:277 / 291
RPM: 7200
Cache: 512 MB
Reliability
MTBF (hours, projected): 2,500,000
Annualized Failure Rate (AFR, %): 0.35
Load/unload cycles (minimum): 600,000
Limited Warranty (years): 5
Power Management
Operational:7.1W
Idle: 5.7W
Power efficiency index  (W/TB, idle): 0.26
Environmental Specifications
Operating (half-sine wave, 2ms): 40G/40G
Non-operating (half-sine wave, 2ms): 200G
Operating: 5°C to 60°C
Non-operating: -40°C to 70°C
Idle Mode: 20 dBA 
Seek Mode: 32 dBA 
Physical Dimensions: 26.1x147x101.6mm, 1.028x5.787x4.0in, 0.67kg, 1.47lb
Country of Assembly: Thailand