Western Digital SATA Hard Drives

Data storage pioneer and a longtime leader in the hard drive industry.

Western Digital SATA Hard Drive

Customers Please Note: All Hard Drives are not returnable. Defective drives can be replaced by the manufacturer if still covered under warranty.

Western Digital Products
SATA Hard Drives
Western Digital Caviar Black, 1TB Hard drive - 1 TB - Internal - 3.5" - SATA 6 Gb/s - 7200 rpm - buffer: 64MB	#WD1002FAEX Our Price: $217.00
Western Digital Caviar Black, 2TB Hard drive - 2 TB - Internal - 3.5" - SATA 6 Gb/s - 7200 rpm - buffer: 64MB	#WD2002FAEX Our Price: $490.00
Western Digital Caviar Green, 1TB, 32MB Buffer Hard drive - 1 TB - Internal - 3.5" - SATA 3 Gb/s - IntelliPower - buffer: 32MB	#WD10EARS Our Price: $199.00
Western Digital Caviar Green, 1.5TB, 32MB Buffer Hard drive - 1.5 TB - Internal - 3.5" - SATA 3 Gb/s - IntelliPower - buffer: 32MB	#WD15EARS Our Price: $205.00
Western Digital Caviar Green, 2TB, 32MB Buffer Hard drive - 2 TB - Internal - 3.5" - SATA 3 Gb/s - IntelliPower - buffer: 32MB	#WD20EARS Our Price: $336.00
Western Digital Caviar Green, 1TB, 64MB Buffer Hard drive - 1 TB - Internal - 3.5" - SATA 6 Gb/s - IntelliPower - buffer: 64MB	#WD10EARX Our Price: $205.00
Western Digital Caviar Green, 1.5TB, 64MB Buffer Hard drive - 1.5 TB - Internal - 3.5" - SATA 6 Gb/s - IntelliPower - buffer: 64MB	#WD15EARX Our Price: $205.00
Western Digital Caviar Green, 2TB, 64MB Buffer Hard drive - 2 TB - Internal - 3.5" - SATA 6 Gb/s - IntelliPower - buffer: 64MB	#WD20EARX Our Price: $245.00
Western Digital Caviar Green, 3TB, 64MB Buffer Hard drive - 3 TB - Internal - 3.5" - SATA 6 Gb/s - IntelliPower - buffer: 64MB	#WD30EZRX Our Price: $395.00
Western Digital RE4 Enterprise, 2TB Hard drive - 2 TB - Internal - 3.5" - SATA 3 Gb/s - 7200 rpm - buffer: 64MB	#WD2003FYYS Our Price: $590.00
Western Digital RE4-GP Enterprise, 2TB Hard drive - 2 TB - Internal - 3.5" - SATA 3 Gb/s - IntelliPower - buffer: 64MB	#WD2002FYPS Our Price: $495.00
Western Digital VelociRaptor, 450GB Hard drive - 450GB - Internal - 3.5" - SATA 6 Gb/s - 10,000 rpm - buffer: 32MB	#WD4500HLHX Our Price: $515.00
Western Digital VelociRaptor, 600GB Hard drive - 600GB - Internal - 3.5" - SATA 6 Gb/s - 10,000 rpm - buffer: 32MB	#WD6000HLHX Our Price: $525.00

Western Digital Caviar Black:

Desktop Performance SATA Hard Drives

WD Caviar 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.


Maximum performance. Dual processor technology, up to 64 MB cache and SATA 3 Gb/s or 6 Gb/s interface takes everything we know about 7200 RPM performance and turns it on its ear.	No compromises. High performance, high capacity, best-in-class reliability, and cutting edge technology make up WD Caviar Black, the ideal drive for those who demand only the best.	Award winning. This 7200 RPM speedster is at the top of its class when it comes to performance and reliability benchmarks.

Product Features:

High Performance Electronics Architecture.

Dual processor - Twice the processing power to maximize performance.

Colossal cache - Bigger, faster cache of up to 64 MB means faster performance.

Interface - WD Caviar Black hard drives are offered with a SATA 6 Gb/s or a SATA 3 Gb/s interface.

Rock Solid Mechanical Architecture.

Dual actuator technology - A head positioning system with two actuators that improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy. (1.5 TB and 2 TB only)

StableTrac - The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations. (1.5 TB and 2 TB only)

NoTouch ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

Massive Capacity.
WD Caviar Black SATA drives are available in capacities up to 2 TB.

Compatible.
We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems.

Ideal for:
Power computing applications such as multimedia, video and photo editing, and maxed out gaming computers.

Desktop / Consumer RAID Environments - WD Caviar Black Hard Drives are tested and recommended for use in consumer-type RAID applications. (RAID-0 / RAID-1)*

Specifications:

Caviar Black Hard Drive View

What It Holds

Specifications¹	WD2002FAEX	WD1002FAEX
Capacities	2 TB	1 TB
Interface	SATA 6 Gb/s	SATA 6 Gb/s
Formatted capacity	2,000,398 MB	1,000,204 MB
User sectors per drive	3,907,029,168	1,953,525,169
SATA latching connector	Yes	Yes
Form factor	3.5-inch	3.5-inch
RoHS compliant²	Yes	Yes
Performance
Data transfer rate (max)	6 Gb/s Buffer to host 138 MB/s Host to/from drive	3 Gb/s Buffer to host 138 MB/s Host to/from drive
Cache	64 MB	64 MB
Average latency	4.2 ms	4.2 ms
Rotational speed (RPM)	7200	7200
Average drive ready time	21 sec	11 sec
Reliability/Data Integrity
Load/unload cycles³	300,000	300,000
Non-recoverable read errors per bits read	<1 in 10¹⁴	<1 in 10¹⁴
Power Management
Average power requirements (W)	Read/Write: 10.7 Idle: 8.2 Standby: 1.3 Sleep: 1.3	Read/Write: 6.8 Idle: 6.1 Standby: 0.7 Sleep: 0.7
Environmental Specifications⁴
Operating Temperature	0 to 60 °C	0 to 60 °C
Non-Operating Temperature	-40 to 70 °C	-40 to 70 °C
Shock
Operating (2 ms, read)	30	30
Operating (2 ms, read/write)	65	65
Non-operating (2 ms)	300	300
Average acoustics (dBA)⁵
Idle mode	29	28
Performance seek mode	34	33
Quiet seek mode	30	29
Physical Dimensions
Weight (lb./kg, ± 10%)	1.66/0.75	1.52/0.69
Dimensions

* Business Critical RAID Environments – WD Caviar Black Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD's Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing.
¹ 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 and SATA 6 Gb/s transfer rates 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.
² WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.
³ Controlled unload at ambient condition
⁴ No non-recoverable errors during operating tests or after non-operating tests.
⁵ Sound power level.

Western Digital Caviar Black Datasheet (.PDF)

Western Digital Caviar Green:

Desktop Power-Saving SATA Hard Drives

As hard drive capacities increase, the power required to run those drives increases as well. WD Caviar Green drives make it possible for energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.


Massive capacity. WD leads the way; pioneering capacity to deliver a massive 3 TBs of storage on a single drive.	Reduced power consumption. Reduced power consumption makes it possible to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.	Cool and quiet. WD GreenPower Technology yields lower operating temperatures for increased reliability and low acoustics perfect for ultra-quiet PCs and external drives.

Product Features:

The world's largest capacity internal hard drive.
WD Caviar Green SATA drives now deliver up to a massive 3 TB's of storage on a single drive.

WD meets the technological challenges of implementing 3 TB SATA hard drives.
SATA hard drives are now capable of storing up to 3 TB of data on a single hard drive. WD is leading the way in the industry, providing you with solutions for implementing 2.19 TB and larger drives.

Perfect for external drives.
External drive manufacturers can eliminate the need for a fan in a high-capacity product by utilizing the cool and quiet operation of WD Caviar Green hard drives.

IntelliSeek.
Calculates optimum seek speeds to lower power consumption, noise and vibration.

IntelliPower.
A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. Additionally, WD Caviar Green drives consume less current during startup allowing lower peak loads on systems as they are booted.

NoTouch ramp load technology.
The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

Advanced Format (AF).
Technology being adopted by WD and other drive manufacturers as one of multiple ways to continue growing hard drive capacities. AF is a more efficient media format that enables increased areal densities. (RX, RS and RSDTL models only)

Ideal for:
PCs, external storage and other devices that require lower power consumption and cool, quiet operation.

Desktop / Consumer RAID Environments - WD Caviar Green Hard Drives are tested and recommended for use in consumer-type RAID applications. (RAID-0 / RAID-1)*

Specifications:

Caviar Green Hard Drive View

What It Holds

Specifications¹	WD30EZRX	WD20EARX	WD15EARX	WD10EARX
Capacities	3 TB	2 TB	1.5 TB	1 TB
Interface	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s
Formatted capacity	3,000,592 MB	2,000,398 MB	1,500,301 MB	1,000,204 MB
User sectors per drive	5,860,533,168	3,907,029,168	2,930,277,168	1,953,525,168
Advanced Format (AF)	Yes	Yes	Yes	Yes
SATA latching connector	Yes	Yes	Yes	Yes
Form factor	3.5-inch	3.5-inch	3.5-inch	3.5-inch
RoHS compliant²	Yes	Yes	Yes	Yes
Performance
Data transfer rate (max)	6 Gb/s Buffer to host 123 MB/s Host to/from drive	6 Gb/s Buffer to host 110 MB/s Host to/from drive
Cache	64 MB	64 MB	64 MB	64 MB
Rotational speed (RPM)	IntelliPower	IntelliPower	IntelliPower	IntelliPower
Reliability/Data Integrity
Load/unload cycles³	300,000	300,000	300,000	300,000
Non-recoverable read errors per bits read	<1 in 10¹⁴	<1 in 10¹⁴	<1 in 10¹⁴	<1 in 10¹⁴
Power Management
12VDC (A, peak)	1.78	1.75	1.75	1.65
Average power requirements (W)	Read/Write: 6 Idle: 5.5 Standby: 0.8 Sleep: 0.8	Read/Write: 5.3 Idle: 3.3 Standby: 0.7 Sleep: 0.7	Read/Write: 5.3 Idle: 3.3 Standby: 0.7 Sleep: 0.7	Read/Write: 5.3 Idle: 3.3 Standby: 0.7 Sleep: 0.7
Environmental Specifications⁴
Operating Temperature	0 to 60 °C	0 to 60 °C	0 to 60 °C	0 to 60 °C
Non-Operating Temperature	-40 to 70 °C	-40 to 70 °C	-40 to 70 °C	-40 to 70 °C
Shock
Operating (2 ms, read)	30	30	30	30
Operating (2 ms, read/write)	65	65	65	65
Non-operating (2 ms)	250	250	250	300
Average acoustics (dBA)⁵
Idle mode	24	24	24	23
Performance seek mode	29	29	29	27
Quiet seek mode	25	25	25	24
Physical Dimensions
Weight (lb./kg, ± 10%)	1.61/0.73	1.40/0.64	1.40/0.64	1.32/0.60
Dimensions
Specifications¹	WD30EZRSDTL	WD20EARS	WD15EARS	WD10EARS
Capacities	3 TB	2 TB	1.5 TB	1 TB
Interface	SATA 3 Gb/s	SATA 3 Gb/s	SATA 3 Gb/s	SATA 3 Gb/s
Formatted capacity	3,000,592 MB	2,000,398 MB	1,500,301 MB	1,000,204 MB
User sectors per drive	5,860,533,168	3,907,029,168	2,930,277,168	1,953,525,168
Advanced Format (AF)	Yes	Yes	Yes	Yes
SATA latching connector	Yes	Yes	Yes	Yes
Form factor	3.5-inch	3.5-inch	3.5-inch	3.5-inch
RoHS compliant²	Yes	Yes	Yes	Yes
Performance
Data transfer rate (max)	3 Gb/s Buffer to host 123 MB/s Host to/from drive	3 Gb/s Buffer to host 110 MB/s Host to/from drive
Cache	64 MB	64 MB	64 MB	64 MB
Rotational speed (RPM)	IntelliPower	IntelliPower	IntelliPower	IntelliPower
Reliability/Data Integrity
Load/unload cycles³	300,000	300,000	300,000	300,000
Non-recoverable read errors per bits read	<1 in 10¹⁴	<1 in 10¹⁴	<1 in 10¹⁴	<1 in 10¹⁴
Power Management
12VDC (A, peak)	1.78	1.75	1.75	1.65
Average power requirements (W)	Read/Write: 6 Idle: 5.5 Standby: 0.8 Sleep: 0.8	Read/Write: 5.3 Idle: 3.3 Standby: 0.7 Sleep: 0.7	Read/Write: 5.3 Idle: 3.3 Standby: 0.7 Sleep: 0.7	Read/Write: 5.3 Idle: 3.3 Standby: 0.7 Sleep: 0.7
Environmental Specifications⁴
Operating Temperature	0 to 60 °C	0 to 60 °C	0 to 60 °C	0 to 60 °C
Non-Operating Temperature	-40 to 70 °C	-40 to 70 °C	-40 to 70 °C	-40 to 70 °C
Shock
Operating (2 ms, read)	30	30	30	30
Operating (2 ms, read/write)	65	65	65	65
Non-operating (2 ms)	250	250	250	300
Average acoustics (dBA)⁵
Idle mode	24	24	24	23
Performance seek mode	29	29	29	27
Quiet seek mode	25	25	25	24
Physical Dimensions
Weight (lb./kg, ± 10%)	1.61/0.73	1.40/0.64	1.40/0.64	1.32/0.60
Dimensions

*Business Critical RAID Environments – WD Caviar Green Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD's Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing.
¹ 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 and SATA 6 Gb/s transfer rates 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.
² WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.
³ Controlled unload at ambient condition
⁴ No non-recoverable errors during operating tests or after non-operating tests.
⁵ Sound power level.

Western Digital Caviar Green Datasheet (.PDF)

Western Digital RE4:

Enterprise SATA Hard Drives

WD RE4 enterprise SATA hard drives combine 64 MB cache with a SATA 3 Gb/s transfer rate and dual stage actuation for lightning-fast performance in demanding server and storage applications. Technologically advanced acoustics minimize noise. Cool drive operation and enhanced reliability features help protect the drive and the data stored on it.


Massive capacity. WD RE4 Enterprise SATA drives are available with up to 2 TB's of cavernous capacity.	High-performance technology. With a combination of 64 MB cache, dual processors and dual stage actuation WD RE4 drives deliver lightning-fast performance in demanding server and storage applications.	24x7 reliability. Each drive is put through extended burn-in testing with thermal cycling to ensure reliable operation.

Product Features:

Dual actuator technology.
A head positioning system with two actuators that improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy. (2 TB model only)

Dual processor.
With double the processing power, WD RE4 boasts the highest performance of any drive in the WD RE family.

StableTrac.
The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations.

RAFF.
Enhanced RAFF technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time. The result is a significant performance improvement in high vibration environments over the previous generation of drives.

IntelliSeek.
Calculates optimum seek speeds to lower unnecessary power consumption, noise, and vibration.

Multi-axis shock sensor.
Automatically detects the subtlest shock events and compensates to protect the data.

RAID-specific, time-limited error recovery (TLER).
Prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.

Third generation dynamic fly height.
Each read-write head's fly height is adjusted in real time for optimum reliability.

NoTouch ramp load technology.
The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

Thermal extended burn-in test.
Each drive is put through extended burn-in testing with thermal cycling to ensure reliable operation.

Perpendicular Magnetic Recording (PMR).
WD RE4 drives utilize PMR technology to achieve even greater areal density, reliability, and design margin.

Active Power Save.
Delivers best-in-class power consumption through advanced WD firmware that conserves power in active seek modes without degrading performance.

Ideal for:
Ideal for servers, video surveillance, and other demanding write-intensive applications.

Specifications:

WD RE4 Hard Drive View

What It Holds

Specifications¹	WD2003FYYS	WD1503FYYS
Capacities	2 TB	1.5 TB
Interface	SATA 3 Gb/s	SATA 3 Gb/s
Formatted capacity	2,000,398 MB	1,500,301 MB
User sectors per drive	3,907,029,168	2,930,277,168
Native command queuing	Yes	Yes
SATA latching connector	Yes	Yes
Form factor	3.5-inch	3.5-inch
Performance
Data transfer rate (max)	3 Gb/s Buffer to host 138 MB/s Host to/from drive
Cache	64 MB	64 MB
Rotational speed (RPM)	7200	7200
Average drive ready time (sec)	21	21
Configuration/Organization
Heads/disks	8/4	6/3
Bytes per sector (STD)	512	512
Reliability/Data Integrity
Load/unload cycles²	600,000	600,000
Non-recoverable read errors per bits read	<1 in 10¹⁵	<1 in 10¹⁵
Power Management
12VDC (A, peak)	1.8	1.8
Average power requirements (W)	Read/Write: 10.7 Idle: 8.2 Standby: 1.3 Sleep: 1.3	Read/Write: 10.7 Idle: 8.2 Standby: 1.3 Sleep: 1.3
Environmental Specifications³
Operating Temperature	5 to 55 °C	5 to 55 °C
Non-Operating Temperature	-40 to 70 °C	-40 to 70 °C
Shock
Operating (2 ms, read)	30	30
Operating (2 ms, read/write)	65	65
Non-operating (2 ms)	300	300
Average acoustics (dBA)⁴
Idle mode	29	29
Performance seek mode	34	34
Quiet seek mode	30	30
Physical Dimensions
Weight (lb./kg, ± 10%)	1.66/0.75	1.66/0.75
Dimensions

¹ 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 and SATA 6 Gb/s transfer rates 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.
² Controlled unload at ambient condition
³ No non-recoverable errors during operating tests or after non-operating tests.
⁴ Sound power level.

Western Digital WD RE4 Datasheet (.PDF)

Western Digital RE4-GP:

Enterprise SATA Power-Saving Hard Drives

This WD RE4-GP drives take advantage of the performance improvements offered in the WD RE3 family of drives and add advanced power management technology to deliver a faster, greener solution for large-scale data centers.


Faster. Massive 64 MB cache, dual processors, and increased areal density yield twice the processing power results up to a 25% performance improvement over the previous generation.	Greener. Improvements in our power-conserving technologies - IntelliSeek, IntelliPark, and IntelliPower - deliver improved power consumption over our previous generation of WD RE-GP drive.	Lower total cost of ownership. Large data-hungry organizations such as financial institutions and web service providers may realize up to $10 savings per drive per year in electricity costs(U.S.). A large data center with 10,000 drives could realize up to $100,000 in saving per year.

Product Features:

Improved rotary vibration tolerance.
Advanced mechanical optimizations along with system characterization and validation provide the highest performance under vibration conditions of any WD product.

24x7 reliability.
With 1.2 million hours MTBF, these drives have the highest available reliability rating on a high-capacity drive.

StableTrac.
Secures the motor shaft at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations.

RAID-specific time-limited error recovery (TLER).
Prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.

IntelliSeek.
Calculates optimum seek speeds to lower unnecessary power consumption, noise, and vibration.

IntelliPower.
A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. Additionally, drives with WD GreenPower Technology consume less current during start up allowing more drives to spin up simultaneously resulting in faster system readiness.

IntelliPark.
Delivers lower power consumption by automatically unloading recording heads during idle to reduce aerodynamic drag, and by disengaging read/write channel electronics.

Rotary Acceleration Feed Forward (RAFF).
Optimizes operation and performance when the drives are used in vibration-prone multi-drive systems such as rack mounted servers.

Perpendicular Magnetic Recording (PMR).
Employs PMR technology to achieve even greater areal density.

Active Power Management.
Drives with WD GreenPower Technology monitor the work load and automatically invoke idle mode whenever possible to further reduce unnecessary power consumption. Drive recovery time from idle mode is less than one second, providing seamless power management between the drive and the host controller.

Ideal for:
Large data centers, web service providers, commercial grade surveillance systems and organizations requiring huge amounts of storage with limited budget and power allotment.

Specifications:

WD RE4 GP Hard Drive View

What It Holds

Specifications¹	WD2002FYPS	WD1502FYPS
Capacities	2 TB	1.5 TB
Interface	SATA 3 Gb/s	SATA 3 Gb/s
Formatted capacity	2,000,398 MB	1,500,301 MB
User sectors per drive	3,907,029,168	2,930,277,168
Native command queuing	Yes	Yes
SATA latching connector	Yes	Yes
Form factor	3.5-inch	3.5-inch
RoHS compliant²	Yes	Yes
Performance
Data transfer rate (max)	3 Gb/s Buffer to host 110 MB/s Host to/from drive
Cache	64 MB	64 MB
Rotational speed (RPM)	IntelliPower	IntelliPower
Average drive ready time (sec)	17	17
Configuration/Organization
Heads/disks	8/4	6/3
Bytes per sector (STD)	512	512
Reliability/Data Integrity
Load/unload cycles³	600,000	600,000
Non-recoverable read errors per bits read	<1 in 10¹⁵	<1 in 10¹⁵
Power Management
12VDC (A, peak)	1.8	1.8
Average power requirements (W)	Read/Write: 6.8 Idle: 3.7 Standby: 0.8 Sleep: 0.8	Read/Write: 7.4 Idle: 4.0 Standby: 1.1 Sleep: 1.1
Environmental Specifications⁴
Operating Temperature	5 to 55 °C	5 to 55 °C
Non-Operating Temperature	-40 to 70 °C	-40 to 70 °C
Shock
Operating (2 ms)	30	30
Operating (2 ms, read/write)	65	65
Non-operating (2 ms)	300	300
Average acoustics (dBA)⁵
Idle mode	25	25
Performance seek mode	29	29
Quiet seek mode	26	26
Physical Dimensions
Weight (lb./kg, ± 10%)	1.61/0.73	1.61/0.73
Dimensions

¹ 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 and SATA 6 Gb/s transfer rates 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.
² WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.
³ Controlled unload at ambient condition
⁴ No non-recoverable errors during operating tests or after non-operating tests.
⁵ Sound power level.

Western Digital WD RE4 GP Datasheet (.PDF)

Western Digital VelociRaptor:

10,000 RPM SATA Hard Drives

WD VelociRaptor hard drives deliver maximum speed and reliability for performance enthusiast systems, workstations, and low-end servers. With a superbly engineered combination of 10,000 RPM spin speed, SATA 6 Gb/s interface and a 32 MB cache, these drives are truly an evolution in performance.


Monstrous capacity. 10,000 RPM, 32 MB cache and a SATA 6 Gb/s interface gives gamers the speed advantage they crave.	Fastest SATA hard drive on the planet. Twice the capacity of previous generations makes this the largest capacity 10,000 RPM SATA drive ever.	Rock-solid reliability. Best-in-class 1.4 million hour MTBF and 5-year limited warranty, makes these the most reliable SATA hard drives around.

Product Features:

Killer speed.
SATA 6 Gb/s interface and 32 MB cache enhance the next generation 10,000 RPM WD VelociRaptor making it up to 15% faster than the award-winning previous generation.

Ultra-cool operation.
Consumes less idle power and uses similar active power as the previous generation WD VelociRaptor, while offering double the capacity and higher performance.

Rotary Acceleration Feed Forward (RAFF).
Optimizes operation and performance when the drives are used in vibration-prone, multi-drive chassis.

NoTouch ramp load technology.
The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

Environmentally conscious.
In addition to being ROHS compliant, this generation of WD VelociRaptor is also a halogen-free design.

Ideal for:
Performance enthusiast systems, workstations, and low-end servers.

IcePack mounting frame.
The 2.5-inch WD VelociRaptor is enclosed in a backplane-ready 3.5-inch enterprise-class mounting frame with a built-in heat sink that keeps this powerful little drive extra cool when installed in high-performance desktop chassis. (HLHX and HLFS models)

Specifications:

VelociRaptor Hard Drive View with IcePack mounting frame

What It Holds

Specifications¹	WD6000HLHX	WD4500HLHX
Capacities	600 GB	450 GB
Interface	SATA 6 Gb/s	SATA 6 Gb/s
Formatted capacity	600,127 MB	450,098 MB
User sectors per drive	1,172,123,568	879,097,968
Native command queuing	Yes	Yes
SATA latching connector	Yes	Yes
Actuator latch/auto park	Yes	Yes
Form factor	3.5-inch	3.5-inch
RoHS compliant²	Yes	Yes
Performance
Data transfer rate (max)	6 Gb/s Buffer to host 145 MB/s Host to/from drive
Cache	32 MB	32 MB
Rotational speed (RPM)	10,000	10,000
Average drive ready time (sec)	7	7
Reliability/Data Integrity
Load/unload cycles³	600,000	600,000
Non-recoverable read errors per bits read	<1 in 10¹⁵	<1 in 10¹⁵
Power Management
12VDC (A, max)	1.8	1.8
Average power requirements (W)	Read/Write: 6.4 Idle: 4.3 Standby: 0.7 Sleep: 0.7	Read/Write: 6.4 Idle: 4.3 Standby: 0.7 Sleep: 0.7
Environmental Specifications⁴
Operating Temperature	5 to 55 °C	5 to 55 °C
Non-Operating Temperature	-40 to 70 °C	-40 to 70 °C
Shock
Operating (2 ms)	30	30
Operating (2 ms, read/write)	65	65
Non-operating (2 ms)	300	300
Average acoustics (dBA)⁵
Idle mode	27	27
Performance seek mode	34	34
Physical Dimensions
Weight (lb./kg, ± 10%)	1.08/0.49
Dimensions

¹ 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 and SATA 6 Gb/s transfer rates 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.
² WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.
³ Controlled unload at ambient condition
⁴ No non-recoverable errors during operating tests or after non-operating tests.
⁵ Sound power level.

Western Digital VelociRaptor Datasheet (.PDF)

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