Western Digital Gold 18TB 3.5″ Enterprise Class SATA 6 Gb/s HDD 7200 RPM Cache Size 512MB 5-Year Limited Warranty | WD181KRYZ

Western Digital Gold 18TB 3.5″ Enterprise Class SATA 6 Gb/s HDD 7200 RPM Cache Size 512MB 5-Year Limited Warranty

Part Number: WD181KRYZ

Product Features
Capacity1: 18TB
Interface: SATA 6 Gb/s
Format: Sector size (bytes)2: 512e
Native Command Queuing: Yes
Form Factor: 3.5-inch
OptiNAND™ technology: No
ArmorCacheTM: No
RoHS compliant3: Yes

Performance
Data Transfer Rate4 (max sustained transfer rate)
MiB/s / MB/s: 257 / 269
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: 6.5W
Idle: 5.6W
Power efficiency index (W/TB, idle): 0.31

Environmental Specifications
Operating (half-sine wave, 2ms): 50G/50G
Non-operating (half-sine wave, 2ms): 250G
Operating: 5°C to 60°C
Non-operating: -40°C to 70°C
Idle Mode: 20 dBA
Seek Mode: 36 dBA

Physical Dimensions: 26.1x147x101.6mm, 1.028×5.787×4.0in, 0.66kg, 1.46lb

Country of Assembly: Thailand

Product Description Last Updated: 29/09/2025

* Whilst we endeavour to have the correct information on our products provided from the supplier/manufacturer, errors do occur. If you would like to double check the information, please feel free to contact us FIRST and we will be more than happy to confirm information on the item prior to purchase. In the event that product information is incorrect due to information we received from our supplier or manufacturer, we do not take responsibility or be held liable for damage(s), loss(s) etc. We will work with you and do our best to make the best of a bad situation and work with our supplier(s) and/or manufacturer(s) to supply the correct information for the item purchased etc..