WD Green Mobile 2.5-inch Hard Drives
Cool, Quiet Operation for Efficient Eco-Conscious Computing


WD Green Mobile 2.5-inch Hard Drives

Western Digital Mobile Hard Drives
WD Green Mobile Hard Drives
WD Green Mobile Hard Drive, 2 TB
Internal HD - 2 TB - 2.5 Inch - SATA 6 Gb/s - IntelliPower - 8MB Cache
#WD20NPVX
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Overview:

Same Drive, New Family WD Green storage is designed specifically with reliability in mind for an increased drive lifespan. The advantage of being cool and quiet impacts overall reliability while reduced heat output, decreased power consumption, quiet acoustics, and best-in-class power management make WD Green a leader when compared to the competition.

Same Drive, New Family

We are making changes to simplify the hard drive selection process for our customers by consolidating our mainstream PC product offerings to only the WD Blue family. All current WD Green capacity, cache and form-factor configurations will remain available through their lifecycle, but under the WD Blue brand**. Although WD Green hard drives are part of a new family, they're still the same reliable hard drive you've grown to know and love over the years.

The advantage of cool & quiet

The advantage of cool & quiet
Heat has a large impact on the overall reliability of a HDD's life over time. It can also lead to increased power consumption, the requirement of additional fans and increased fan operation, increased noise levels and the increased chance of failure. WD Green drives come equipped with WD GreenPower Technology which allows the drive to operate cooler with increased overall reliability.

Power management with performance

Power management with performance
Best-in-class power management, reduced heat output, and next-generation technologies such as IntelliSeek offer a perfect balance of performance and power, making WD Green a leader in performance when compared to the competition.

Reliability with an increased lifespan

Reliability with an increased lifespan
Quiet acoustics, reduced vibration and advanced 4K HDD formatting makes WD Green a stronger solution when compared to the competition and perfect for PCs and external drive applications.

WD GreenCapacity storage
Large capacity offerings of up to 2 TBs help expand customer capabilities and application usage of WD Green including primary installations in desktop PCs, as secondary storage in external cases or as reliable backup storage.

Next-generation technology
Reduced power consumption, improved data tracking, and WD GreenPower Technology all help to improve the overall reliability of WD Green making it an efficient solution that lowers your total cost of ownership. NoTouch Ramp Load Technology also protects the drive by ensuring the recording head never touches the disk media, reducing wear and tear to the head and increases drive reliability.

Easy upgrade
Acronis True Image, available as a download on the WD Support website, enables you to clone or copy all your data to a new drive so you don't have to reinstall your operating system and applications to get all the benefits of a new drive.

Recommended use.
WD Green hard drives are tested and recommended for use in custom-built enclosures and other applications that require cool and quiet operation.*

* Cannot be used in laptop or notebook computers. Designed for PCs and custom external enclosures. Consult system specifications for maximum allowable drive height before attempting to install.

Features:


WD's commitment to sustainability
WD's green initiative goes beyond the product level, focusing on recycling and improving the cleanliness of the air, water and land.

Leading the way to green hard drives
WD led the industry in creating a new category of hard drives that use less power and helps to reduce the world's energy demands one computer user at a time. With over 90 million WD Green drives sold* customers using WD Green drives have saved the planet over 466 million kwh of power – nearly equaling the annual power production of a single coal power plant!

Reduced power consumption
WD Green drives deliver both significant power savings and solid performance. These drives also consume less current during startup allowing lower peak loads on systems as they are booted.

NoTouch ramp load technologyNoTouch 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.

Eco-conscious
WD Green drives are innovatively designed and manufactured with lead-free, conflict-free and halogen-free materials to help ensure a sustainable future.

Conflict-free materials
As a leader in hard drive manufacturing, WD proudly guarantees our hard drives are built with 100% conflictfree raw materials.

Halogen free
In addition to being RoHS compliant, all WD Green drives are lead and halogen free, resulting in less pollutants getting into our environment.

Cool and quiet - WD GreenPower Technology™ yields lower operating temperatures for increased reliability and low acoustics perfect for ultra-quiet PCs and external drives.

WD GreenPower Technology

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 Green Desktop drives consume less current during startup allowing lower peak loads on systems as they are booted.

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

Advanced Format (AF)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)

Reduced rare earths dependency
WD's next-generation WD Green hard drives are built using less rare earth minerals.

Tested for compatibility
We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab™ to give our customers confidence that our drives will work in their systems.

Applications

WD Green hard drives are tested and recommended for use as secondary storage in PCs, external enclosures and applications that require cool and quiet operation.*

The WD Advantage

WD puts our products through extensive Functional Integrity Testing (F.I.T) prior to any product launch. This testing ensures our products consistently meet the highest quality and reliability standards of the WD brand. WD also has a detailed Knowledge Base with more than 1,000 helpful articles as well as helpful software and utilities. Our customer support lines have longer operational hours to ensure you get the help you need when you need it.

* WD hard drives are designed and tested for use in specific applications and environments. This ensures that your hard drive is compatible with and functions properly in your application. Our hard drives are warranted against defects in materials and workmanship in the system for which they were designed. Use in systems other than for what the hard drive was designed could result in compatibility problems that affect proper function, unrelated to material and/or workmanship defects. For best results, be sure to select the appropriate product for your application by consulting our product spec sheets on our website at www.wd.com or by calling our customer support line where we would be happy to help you through the selection process.

Specifications:

Examples of the number of photos, songs, videos and any other files that can be stored on a hard drive are provided for illustrative purposes only. Your results will vary based on file size and format, settings, features, software and other factors.

Photo: Figures represent the average number of photos taken with a 6 megapixel camera in high-resolution JPEG mode with an average file size of 3.5 MB per photo. The actual number of images will vary by camera model and compression setting.

Hours: The DV format, regardless of its mode (miniDV, DVCAM, DVC-Pro) has a data rate of approximately 25mb/s (mega-bits per second). In storage terms, this translates to approximately 3.5MB/s (Megabytes per second) or 13GB/hr (Gigabytes per hour)

Song: Music capacity is based on 4 minutes per song. MP3 capacity is based on 128 Kbps bit rate and 11:1 audio compression ratio. Uncompressed CD quality is based on 1:1 audio compression ratio.

WD Green Dimensions

What It Holds

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, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.

Drive Size 2 TB 1.5 TB
Specifications
Model Number1 WD20NPVX WD15NPVX
Interface SATA 6 Gb/s SATA 6 Gb/s
Formatted Capacity2 2,000,398 MB 1,500,301 MB
User sectors per drive 3,907,029,168 2,930,277,168
Form factor 2.5-inch 2.5-inch
Advanced Format (AF) Yes Yes
RoHS Compliant3 Yes Yes
Performance
Data transfer rate (max)
Buffer to host
host to/from drive (sustained)

6 Gb/s
135 MB/s

6 Gb/s
135 MB/s
Cache (MB) 8 8
Rotational Speed (RPM)4 IntelliPower IntelliPower
Reliability/Data Integrity
Load/unload cycles5 600,000
Non-recoverable read errors per bits read <1 in 1014
Limited warranty (years)6 2
Power Management
5VDC ±10% (A, peak) 1.00 1.00
Average power requirements (W) Read/Write: 1.7
Idle: 0.8
Standby: 0.2
Sleep: 0.2
Read/Write: 1.7
Idle: 0.8
Standby: 0.2
Sleep: 0.2
Environmental Specifications7
Operating Temperature 0 to 60° C
Non-operating Temperature -40 to 65° C
Shock (Gs):
Operating (2 ms) 300 300
Non-operating (2 ms) 650 650
Average acoustics (dBA)8
Idle mode 24 24
Seek mode 25 25
Physical Dimensions
Height (in./mm, max) 0.59/15
Length (in./mm, max) 3.94/100.20
Width (in./mm, ± .01 in.) 2.75/69.85
Weight (lb./kg, ± 10%) 0.40/0.18 0.40/0.18

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 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 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
4 A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. For each WD Green drive model, WD may use a different, invariable RPM.
5 Controlled unload at ambient condition
6 The term of the limited warranty may vary by region. Visit http://support.wdc.com/warranty for details.
7 No non-recoverable errors during operating tests or after non-operating tests.
8 Sound power level.

Advanced Format TechnologyAdvanced Format Hard Drive Download Utility:


About Western Digital Advanced Format Hard Drives

WD Advanced Format drives are specifically optimized for Mac and the latest Windows operating systems such as Windows Vista and Windows 7 with a clean install. Advanced Format Technology is being adopted by WD and other drive manufacturers to increase media format efficiency, thus enabling larger drive capacities.

Using your WD Advanced Format Hard Drive with a Windows Operating System may require you to run the WD Align Windows software utility after you install your operating system or partition and format the drive as a secondary drive. The WD Align software aligns existing partitions on the Advanced Format drive to ensure it provides full performance for certain configurations. (Please see table for configuration details)

If your operating system is either Windows 7 or Vista, WD recommends using the latest Intel driver version 9.6 or later for maximum performance in all situations. Please visit Intel for the latest driver downloads.

OS used to create patition Clean Install Cloning utilitiy
1 Partition or > 1 Partition
USB*
1 Partition
USB*
> 1 Partition
Windows XP Run WD Allgn Run WD Allgn Run WD Allgn Run WD Allgn
Windows Vista N/A Run WD Allgn N/A N/A
Windows 7 N/A Run WD Allgn N/A N/A
Mac OS N/A N/A N/A N/A

What does Advanced Formatting mean to me?

Advanced formatting optimizes hard drives to take advantage of the capabilities of newer operating systems. This capability enables hard disk drive manufacturers the ability to design larger capacity hard drives, now and into the future.

What are the benefits of Advanced Formatting?

Advanced Formatting enables hard drive companies to read and write more data into the same available space on the hard drive.

Can I install an Advanced Format hard drive in my system?

New drives from WD are optimized for operation with Windows 7, Windows Vista and Mac OS X Tiger, Leopard, Snow Leopard. If you are attempting a clean install of an Advanced Format hard drive into a system running one of the Operating Systems listed above the installation process follows standard procedure. For older operating systems such as Windows XP, and for users using cloning software, users must run the WD Align utility to achieve the full performance of the drive. (See table for configuration details)

Early 3.5-inch WD drives with Advanced Format supported jumper pins 7 – 8. Placing a jumper on these pins adjusted the drive’s internal alignment for single partition XP installations. Support for this jumper setting is no longer needed on newer drives. For optimal performance on all XP installations WD recommends running the WD Align utility.

If you have a drive that supports jumper pins 7 – 8 and have a jumper in place on those pins, the following is additional information to assist you if you are re-installing an Operating System or re-partitioning the drive:

  • IMPORTANT: You must backup your drive before making any changes, including removal of the jumper.
  • Re-partition the drive: Turn off power to the drive and remove the jumper from pins 7 – 8. Power-on and re-partition the drive (NOTE: All previous data on the drive will be lost).
  • Preserve Current Partition: If you are installing an Operating System over the existing partition, keep the jumper on pins 7 – 8. The drive is already aligned to the existing partition so you do not need to remove the jumper.
  • If you change the setting of jumper 7 – 8, you will lose all previous data and the drive must be re-partitioned.

For a clean install of Windows XP using multiple partitions, DO NOT install the jumper; simply run the WD Align utility.

Can I install a WD Advanced Format Drive under non-Windows Operating Systems, such as MacOS and Linux?

WD Advanced Format Drives can be used under non-Windows Operating Systems.

Do I need a special driver to install a WD Advanced Format Drive on an Intel chipset?

If your operating system is either Windows 7 or Vista, we recommend the following for maximum performance in all situations:

  • For Intel chipset, use the latest Intel driver version 9.6 or later. Please visit Intel for the latest driver downloads at http://www.intel.com/support/chipsets/imsm/sb/CS-031502.htm
  • For AMD chipset, no driver update is required.
  • For Nvidia chipset, please visit http://support.microsoft.com/kb/982018 for additional information.

What is WD Align utility software?

The WD Align utility enables older operating systems to operate at full performance on Advanced Format hard drives.

How long will running the WD Align utility take?

It will vary based on your operating system and how much data is on the disk, but the WD Align utility should take about 20 minutes to complete on freshly installed drive images with no data files. We recommend disabling Power Management prior to starting the partitioning alignment process.

Does the WD Align utility have to be run again if a drive is reformatted?

No, users will only need to run WD Align one time after initially installing Windows XP. Once Windows XP has been aligned, it will stay aligned even if the drive is reformatted or many files are added or removed.

What models utilize Advanced Format technology?

Some models of the WD Green and WD Blue product families are built using Advanced Format technology. Over time more models and capacities will be added. WD drives with Advanced Format technology include special installation information on the drive label so be sure to read the label on your drive before installing it.

Does WD Align work with Western Digital USB and Firewire drives, such as My Book and My Passport drives?

If you do not change the partitions on a Western Digital USB or Firewire drive, the drive is already optimally aligned. However, all Western Digital USB and Firewire drives are specifically designed to work with WD Align. If you repartition a Western Digital USB or Firewire drive, WD Align should be run to optimally align the partition or partitions.

Can I install my Advanced Format Drive into a USB enclosure?

Yes, you may install your Advanced Format Drive into a USB enclosure.

Drive Views:

Bottom View
Bottom View
Top Angle View
Top Angle View

Right Angle View
Right Angle View
Cover View
Cover View

Documentation:

Download the WD Green Mobile Datasheet (PDF).

Download the WD Green Mobile Specsheet (PDF).