Page 1
PRODUCT BRIEF
Product Highlights
• Take on tough workloads; up to 10 times the
typical desktop rates
• Enhanced reliability with up to 2.5M hours MTBF
• Specifically designed for use in enterprise-class
storage systems and data centers
• 20TB1 on a 9-disk CMR drive utilizing the first
implementation of OptiNAND technology’s
capacity-enabling features
• Energy-assisted magnetic recording (EAMR) and
triple-stage actuator (TSA) (in 16TB capacities
and above)
ENTERPRISE-CLASS SATA HDD
WD Gold™ HDD
Conquering Tough Workloads With Enterpriseclass HDDs
Available in 1TB to 20TB capacities, these highly reliable solutions for demanding storage
environments provide up to 2.5M hours MTBF, vibration protection technology and a low
power draw thanks to HelioSeal® technology (for 12TB and above). Specifically designed
for use in enterprise-class data centers and storage systems, the WD Gold SATA HDDs
deliver the world-class performance you expect from Western Digital® hard drives.
Beyond Expectations
WD Gold hard drives are performance-optimized for heavy application workloads and
are designed to handle workloads up to 550TB2 per year. Available in capacities of 1TB to
20TB1, WD Gold HDDs solve for the most demanding storage environments.
Enhanced Reliability
With up to 2.5M hours MTBF, WD Gold hard drives deliver enhanced levels of
dependability and durability. Built for yearly operation (24×7×365) within the most
demanding storage environments.
Vibration Protection
WD Gold has sophisticated monitoring electronics that help correct linear and rotational
vibrations in real time using enhanced vibration protection technology for improved
performance in high-vibration environments.
Play Well with Others
Specifically designed for use in enterprise-grade storage systems and data centers, the
WD Gold SATA HDD is broadly compatible with major enterprise operating systems.
Reimagining the HDD
WD Gold offers 20TB1 on a 9-disk CMR drive with reimagined HDDs utilizing the first
implementation of OptiNAND™ technology’s capacity-enabling features.
Leading the Way
Energy-assisted magnetic recording (EAMR) technology enables higher media precision
and increases areal density. The triple-stage actuator (TSA) enhances the accuracy of
head-positioning and delivers better performance and data integrity to also increase
areal density. Both EAMR and TSA are available only in 16TB1 capacities and above.
5-Year Limited Warranty
Every WD Gold HDD comes with a 5-year limited warranty, so you can be confident in
your storage.
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WD Gold™ SATA HDD
PRODUCT BRIEF
ENTERPRISE-CLASS SATA HDD
Specifications
20TB 18TB 16TB 14T B 12TB 10TB
Model Number
Form Factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch
Interface SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s
512n / 512e user sectors per drive
Formatted Capacity 20TB 18TB 16TB 14TB 12TB 10TB
RoHS compliant
4
Performance
Data Transfer Rate5 (max Sustained) 26 9M B/s 26 9M B/s 262M B/s 26 7M B/s 25 5MB /s 262 MB /s
Performance (RPM) 7200 7200 7200 7200 7200 7200
6
Cache
Power Management
Average power requirements (W)
Operational
Idle
Power efficiency index
(W/TB , i dle)
7
8
Reliability
MTBF (hours, projected)
Annualized Failure Rate9 (AFR, %) 0.35 0.35 0.35 0.35 0.35 0.44
Limited Warranty 5 years 5 years 5 years 5 years 5 years 5 years
9
Environmental
Operating Temperature 5° to 60°C 5° to 60°C 5° C to 60° C 5° C to 60° C 5° C to 60° C 5° C to 60° C
Non-Operating Temperature -40° to 70°C -40 ° to 70°C -40°C to 70°C -40°C to 70°C -40°C to 70° C -40° C to 70°C
Shock (Read/Write)
Operating (ha lf-sine wave, 2ms)
Non-operating (half-sine wave,
2ms)
Acoustics (average)
Idle Mode 20 dBA 20 dBA 20 dBA 20 dBA 20 dBA 34 dBA
Seek Mode 36 dBA 36 dBA 36 dBA 36 dBA 36 dBA 38 dBA
Physical Dimensions
Height (max) 26.1m m 26.1mm 26.1 m m 26.1 mm 26.1 mm 26 .1 mm
Length (max) 14 7. 0 m m 1 47. 0 mm 147.0 m m 14 7. 0 m m 1 47. 0 mm 1 47.0 m m
Width (± .01 in.) 101.6 mm 101.6 mm 101.6 mm 101.6 mm 101.6 mm 101.6 mm
Weig ht 1.52 lb (.69 kg) +/- 10% 1.52 lb (.69 kg) +/- 10% 1.52 lb. (.69 kg) ± 10% 1.46 lb. (.66 kg) ± 10% 1.65 lb. (.75 kg) ± 10% 1.58 lb. (.715 kg) ± 10%
WD201KRYZ WD18 1KRYZ WD161KRYZ WD141K RYZ WD121K RYZ WD102KRYZ
3
512e 512e 512e 512e 512e 512e
Yes Yes Yes Yes Yes Yes
512MB 512MB 512MB 256MB 256MB 256MB
7.0 W 6. 5W 6.5W 6.0W 6 .9W 9.2 W
6.0W 5.6W 5.6W 5.5W 5.0W 8.0W
0.30 0.31 0.35 0.4 0.4 0.8
2,500,000 2,500,000 2,500,000 2,500,000 2,500,000 2,000,000
50G/50G 50G/50G 50G/50G 70G/70 G 70G/70G 70G/50G
250G 250G 250G 300G 300G 250G
Page 3
WD Gold™ SATA HDD
PRODUCT BRIEF
ENTERPRISE-CLASS SATA HDD
Specifications
8TB 6TB 4T B 2TB 1TB
Model Number
Form Factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch
Interface SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s SATA 6 G b/s
512n / 512e user sectors per drive
3
Formatted Capacity 8TB 6TB 4T B 2TB 1TB
RoHS compliant
4
Performance
Data Transfer Rate5 (max Sustained) 25 5MB /s 2 5 5M B/s 255 MB/s 200MB/s 184 MB/s
Performance (RPM) 7200 7200 7200 7200 7200
6
Cache
Power Management
Average power requirements (W)
Operational
Idle
7
8
Power efficiency index
(W/TB , i dle)
Reliability
MTBF (hours, projected)
Annualized Failure Rate9 (AFR, %) 0.44 0.44 0.44 0.4 4 0.44
Limited Warranty 5 years 5 years 5 years 5 years 5 years
9
Environmental
Operating Temperature 5° C to 60 ° C 5° C to 60° C 5° C to 60° C 5° C to 60° C 5° C to 60° C
Non-Operating Temperature -40° C to 70°C -40 °C to 70°C -40°C to 70 °C -40°C to 70°C -40°C to 70° C
Shock (Read/Write)
Operating (ha lf-sine wave, 2ms)
Non-operating (half-sine wave, 2ms) 300G 300G 300G 300G 300G
Acoustics (average)
Idle Mode 29 dBA 29 dBA 29 dBA 25 dBA 25 dBA
Seek Mode 36 dBA 36 dBA 36 dBA 28 dBA 28 dBA
Physical Dimensions
Height (max) 26.1 m m 26 .1 mm 26.1 m m 26 .1 mm 26.1 m m
Length (max) 14 7. 0 m m 147. 0 mm 147. 0 m m 147.0 m m 14 7.0 m m
Width (± .01 in.) 101.6 mm 101.6 mm 101.6 mm 101.6 mm 101.6 mm
Weig ht 1.58 lb. (.715 kg) ± 10% 1.58 lb. (.715 kg) ± 10% 1.58 lb. (.715 kg) ± 10% 1. 41 lb. (.64 kg) ± 10% 1.41 lb. (.64 kg) ± 10%
As used for storage capacity, 1GB = 1 billion bytes and 1TB = one trillion bytes. Actual user capaci-
ty may be less depending on operating environment.
Workload Rate is defined as the amount of user data transferred to or from the hard drive. Work-
load Rate is annualized (TB transferred X (8760 / recorded power-on hours)). Workload Rate will
vary depending on your hardware and software components and configurations.
3
512e: Advanced Format drive with 512-byte logical sectors and 4K (4096-byte) physical sectors.
512n: Native 512-byte logical and physical sectors.
This drive is in compliance with the European Union Directive 2011/65/EU and Directive (EU)
2015/863 on the restriction of the use of certain hazardous substances (RoHS) in electrical and
electronic equipment.
WD8004FRYZ W D60 03F RYZ WD4003FRYZ WD2005FBYZ WD1005FBYZ
512e 512e 512e 512n 512n
Yes Yes Yes Yes Yes
256MB 256MB 256MB 128MB 128MB
8.8W 7.0 W 7. 0W 8.1W 8.1W
7.4W 5.9W 5 .9W 5.9W 5.9W
0.9 1.0 1.5 3.0 5 .9
2,000,000 2,000,000 2,000,000 2,000,000 2,000,000
70G/70G 70G/70G 70G/70G 65G/65G 65G/65G
Data Transfer Rate: MB/s is 1,000,000 bytes; 1MiB = 1,048,576
Cache Buffer: Portion of buffer capacity used for drive firmware.
Operational Power: Random RW 50/50 8KB QD=1 @40 IOPS.
Idle Power: Based on use of Idle_A
MTBF and AFR: Projected values for model number WD201KRYZ. Final MTBF and AFR
specifications will be based on a sample population and are estimated by statistical
measurements and acceleration algorithms under typical operating conditions, workload
220TB/year and drive temperature 40C. Derating of MTBF and AFR will occur above these
parameters, up to a maximum workload of 550TB writes at 60C device temp. MTBF and AFR
ratings do not predict an individual drive’s reliability and do not constitute a warranty.
5601 Great Oaks Pa rkway
San Jose, CA 95119, USA
www.westerndigital.com
© 2021 Western D igital Corpor ation or it s affiliates. All r ights reserve d. Western D igital, t he Western D igital l ogo, WD Gol d, HelioS eal and Op tiNAND are r egister ed
tradem arks or tradema rks of Western Digit al Corporation o r its affiliates i n the U.S. an d/or other co untries . All other m arks are the prope rty of th eir respective ow ners.
Picture s shown may vary fro m actual p roduct s. References in th is publication to Wes tern Digital pro ducts, progra ms, or services d o not imply t hat they will be mad e
availab le in all cou ntries. P roduct s pecific ations pro vided are s ample specific ations th at are subj ect to chan ge and do not consti tute a warr anty. Pleas e visit our website,
http://www.westerndigital.com for additional information on product specifications.
D018–000378-AA00 November 2021
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