Western Digital SATA Hard Drives (3.5 inch)
Data storage pioneer and a longtime leader in the hard drive industry.

WD Red Pro:

NAS Storage

SOLUTIONS FOR SMB CUSTOMERS
For up to 16 bay medium to large-scale NAS environments, the WD Red Pro drive is engineered to handle increased business workloads and carries a 5-year limited warranty.

Product Features:

LARGER NAS BAY SHOCK PROTECTION
A multi-axis shock sensor automatically detects subtle shock events that may occur in larger NAS environments and when combined with dynamic fly height technology, helps to adjust each read-write function to compensate for increased vibrations and protect data.

DESIGNED FOR NAS
Desktop drives aren't purpose-built for NAS. But WD Red Pro drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.

Technical Specifications:

WD Red Pro Hard Drive View

¹ Not all products may be available in all regions of the world.
² As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 6 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization as of the date of this specification sheet. Visit www.sata-io.org for details.
³ WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
⁴ Controlled unload at ambient condition.
⁵ Based on a typical NAS product environment under normal operating conditions.
⁶ The term of the limited warranty may vary by region. Visit http://support.wd.com/warranty for details.
⁷ No non-recoverable errors during operating tests or after non-operating tests.
⁸ On the base casting.
⁹ Sound power level.
¹⁰ Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred X (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.

WD Red Pro Datasheet (.PDF)

WD Black:

Desktop Hard Drives

Maximum Performance for Power Computing
WD Black hard drives are designed for enthusiasts and creative professionals looking for leading-edge performance. These drives are perfect for high performance applications like photo and video editing, gaming and power PCs. Our all new next-generation WD Black drives deliver improved performance that heightens the experience of your PC playground. These performance drives offer enhanced features over the previous generation to maximise system performance, allowing you to have more fun creating while spending less time waiting.

WD Black drives combine a high performance electronics architecture with a rock solid mechanical architecture to deliver the perfect storage solution for your fully-loaded PC or maxed out gaming machine. Cool drive operation, no-touch head technology, and leading-edge vibration protection ensure enhanced reliability and sustained data throughput. It's ideal for power computing applications such as multimedia, video and photo editing, and maxed out gaming computers.

Inspiring performance and capacity

For the creators, the gamers and those that demand the best, we delivered the next generation of hard drives to enlarge your PC playground. The latest WD Black desktop hard drives offer enhanced features that maximise system performance, allowing you to spend more time doing what you love most and less time waiting. WD Black is designed to intensify your PC experience with generous capacity and incredible performance, pushing the boundaries of personalisation.

Product Features:

Specifications:

WD Red Hard Drive View

Drive Size	4 TB	3 TB	2 TB	1 TB
Specifications
Model Number1	WD4001FAEX	WD3001FAEX	WD2002FAEX	WD1002FAEX
Interface	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s
Formatted Capacity2	4 TB	3 TB	2 TB	1 TB
Form factor	3.5-inch	3.5-inch	3.5-inch	3.5-inch
Advanced Format (AF)	No	No	No	No
RoHS Compliant3	Yes	Yes	Yes	Yes
Performance
Data transfer rate (max) Buffer to host host to/from drive (sustained)	6 Gb/s 154 MB/s	6 Gb/s 154 MB/s	6 Gb/s 138 MB/s	6 Gb/s 126 MB/s
Cache (MB)	64	64	64	64
Rotational Speed (RPM)	7200	7200	7200	7200
Reliability/Data Integrity
Load/unload cycles4	300,000
Non-recoverable read errors per bits read	<1 in 1014
Limited warranty (years)5	5
Power Management
Average power requirements (W)	Read/Write: 9.5 Idle: 8.1 Standby: 1.3 Sleep: 1.3	Read/Write: 9.5 Idle: 8.1 Standby: 1.3 Sleep: 1.3	Read/Write: 9.5 Idle: 8.1 Standby: 1.3 Sleep: 1.3	Read/Write: 6.8 Idle: 6.1 Standby: 0.7 Sleep: 0.7
Environmental Specifications6
Operating Temperature	0 to 60° C
Non-operating Temperature	-40 to 70° C
Shock (Gs)
Operating (2 ms, read/write)	30	30	30	30
Operating (2 ms, read)	65	65	65	65
Non-operating (2 ms)	300	300	300	300
Average acoustics (dBA)7
Idle mode	29	29	29	28
Performance seek mode	34	34	34	33
Physical Dimensions
Weight (lb./kg, ± 10%)	1.50/0.68	1.40/0.64	1.32/0.60	0.99/0.45
Dimensions

* Desktop drives are not recommended for use in RAID environments, please consider using WD Red hard drives for home and small office, 1 to 5 bay NAS systems and WD datacenter hard drives for 6 bay and greater NAS systems.
¹ Not all products may be available in all regions of the world.
² As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATAIO organisation as of the date of this specification sheet. Visit www.sata-io.org for details.
³ WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
⁴ Controlled unload at ambient condition
⁵ The term of the limited warranty may vary by region. Visit http://support.wd.com/warranty for details
⁶ No non-recoverable errors during operating tests or after non-operating tests.
⁷ Sound power level.

WD Black Datasheet (.PDF)