WD Re Datacenter 3.5-inch SATA Hard Drives
Performance-Optimized High-Capacity Storage for High-Availability Deployments
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With advanced technology that delivers consistent high performance in a multitude of applications, and with ten times the workload capability of desktop drives, WD Re is the workhorse of the WD's datacenter portfolio. WD Re is perfect for high-availability storage arrays that demand the most robust storage device available. WD Re's high performance, capacity and reliability make it ideal for data warehousing/mining and high-performance computing. WD Re is available with a SATA interface for maximum flexibility and compatibility.
High capacity Nearline drive
Massive capacities up to 6 TB suit even the most demanding datacenter, enterprise server, or cloud storage needs.
Designed for high-intensity applications
Designed to handle up to 550 TB per year – the highest workload capability of any 3.5-inch hard drive – delivering both performance and reliability to any datacenter environment.
Designed for quality and reliability
With up to 1.4 million hours MTBF, this high performance drive delivers the highest level of reliability for 24x7x365 operation in the most demanding storage environments.
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.
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.
RAID-specific, time-limited error recovery (TLER).
Prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.
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.
Dual port processor.
Twice the processing power to maximize performance.
The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations.
Multi-axis shock sensor.
Automatically detects the subtlest shock events and compensates to protect the data.
Dynamic fly height technology.
Each read-write head's fly height is adjusted in real time for optimum reliability.
Thermal extended burn-in test.
Each drive is put through extended burn-in testing with thermal cycling to ensure reliable operation.
Ideal for NAS, servers, video surveillance, and other demanding write-intensive applications.
Online analytical processing (OLAP), data warehousing/mining, high-performance computing, high-end NAS/SAN and surveillance systems, and high-availability cloud storage arrays.
The WD Advantage
WD puts our datacenter products through extensive Functional Integrity Testing (F.I.T) prior to any product launch. This testing ensures our products consistently meet the high quality and reliability standards of the WD brand. Following a FIT test the Enterprise System Group (ESG) testing validates interoperability with HBAs, operating systems and drivers to ensure an even greater level of quality, reliability and peace of mind.
WD also has a detailed Knowledge Base with helpful articles and software utilities. Our customer support lines have longer operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details.
* SED drives may require TCG-compliant host or controller support. SED drives may not be available in all countries.
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.
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||6 TB||5 TB||4 TB||3 TB||2 TB||1 TB||500 GB||250 GB|
|512 native model number1||-||WD4000FYYZ||WD3000FYYZ||WD2000FYYZ||WD1003FBYZ||WD5003ABYZ||WD2503ABYZ|
|512 emulation model number1||WD6001FSYZ||WD5001FSYZ||-||-||-||-||-||-|
|4K native model number1||WD6001FXYZ||WD5001FXYZ||-||-||-||-||-||-|
|Interface||SATA 6 Gb/s||SATA 6 Gb/s||SATA 6 Gb/s||SATA 6 Gb/s||SATA 6 Gb/s||SATA 6 Gb/s||SATA 6 Gb/s||SATA 6 Gb/s|
|Formatted Capacity2||6 TB||5 TB||4 TB||3 TB||2 TB||1 TB||500 GB||250 GB|
|512n/512e user sectors per drive||11,721,045,168||9,767,541,168||7,814,037,168||5,860,533,168||3,907,029,168||1,953,525,168||976,773,168||490,350,672|
|4Kn user sectors per drive||1,465,130,646||1,220,942,646||-||-||-||-||-||-|
|Native command queuing||Yes||Yes||Yes||Yes||Yes||Yes||Yes||Yes|
|Data transfer rate (max)
Buffer to host
host to/from drive (sustained)
|Rotational Speed (RPM)||7200||7200||7200||7200||7200||7200||7200||7200|
|Non-recoverable read errors per bits read||<10 in 1015|
|Limited warranty (years)7||5|
|Average power requirements (W)
|Operating Temperature||5 to 55° C|
|Non-operating Temperature||-40 to 70° C|
|Operating (2 ms, read/write)||30||30||30||30||30||30||30||30|
|Operating (2 ms, read)||65||65||65||65||65||65||65||65|
|Non-operating (2 ms)||300||300||300||300||300||300||350||350|
|Average acoustics (dBA)9|
|Performance seek mode||34||34||34||34||34||33||30||30|
|Height (in./mm, max)||1.028/26.1|
|Length (in./mm, max)||5.787/147|
|Width (in./mm, ± .01 in.)||4/101.6|
|Weight (lb./kg, ± 10%)||1.58/0.72||1.58/0.72||1.66/0.75||1.66/0.75||1.55/0.70||1.49/0.68||0.99/0.45||0.99/0.45|
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 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.
2 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
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 Product MTBF and AFR specifications are based upon a 40°C base casting temperature and typical system workload of 240 TB/year. Workload is defined as the amount of user data transferred to or from the hard drive. Product is designed for workloads up to 550 TB/year.
6 Product MTBF and AFR specifications are based upon a 40°C base casting temperature and typical system workload of 300 TB/year. Workload is defined as the amount of user data transferred to or from the hard drive. Product is designed for workloads up to 550 TB/year.
7 See http://support.wd.com/warranty for regional specific warranty details.
8 No non-recoverable errors during operating tests or after non-operating tests.
9 Sound power level.
WD Datacenter Storage Portfolio:
Elemental storage building blocks for every datacenter
WD's datacenter hard drives are built to run in always-on environments where they are required to maintain maximum performance and data integrity within complex systems running massive scale applications.
In addition to overall performance and reliability, these drives feature additional attributes that are unique to enterprise-class hard drives for datacenter deployments:
- Error Rate
- Drive to Drive Variation Linear and Radial Vibration
- Performance Degradation
- Number of Mapped Defects, Defects per Surface
- Head Amplitude, Track Width
- Tracks per Disk
- Robust Factory Process and Procedures
From multiple processors and redundant power supplies to specialized storage devices and robust interfaces such as SAS, datacenters demand the highest quality and most reliable components to ensure maximum uptime, expandability, and data integrity.
Through fundamental enterprise-class design, specialized features and technologies and rigorous manufacturing and test processes, WD delivers the right storage building blocks for every datacenter.
Designed to deliver optimal durability in your datacenter.
With the industry's highest capacity, class-leading reliability and ten times the workload capability of desktop drives, WD Re is the workhorse of the WD's datacenter portfolio. WD Re is perfect for high-availability storage arrays such as RAID, that demand the most robust storage device available. WD Re's high performance, capacity and reliability make it ideal for data warehousing/mining and high-performance computing. WD Re is available with either a SAS or SATA interface for flexibility and maximum compatibility. The drive's SAS interface contributes to its high reliability and manageability in high-availability arrays.
- Designed for RAID configurations
- Highest error tolerance of any capacity-optimized drive
- Industry-leading combination of capacity, reliability and workload capability
On-line analytical processing (OLAP), high-performance computing, high-reliability cloud storage, high-availability RAID arrays.
If your application requires capacity without compromising reliability and workload capability, WD Re is the right datacenter storage device for you.
Designed to deliver optimal scalability in your datacenter.
With the ideal combination of capacity, reliability and workload capability for many scale-out architectures, WD Se provides acost-effective solution for large-scale cloud deployments and entry to mid-range arrays designed for low workload applications. With its true enterprise-class pedigree and design, WD Se is ideal for multi-bay enclosures, from entry level servers, to mid-range Network-Attached Storage (NAS), to bulk cloud storage. WD Se employs Advanced Format and the SATA interface to deliver the lowest cost per gigabyte of any enterprise-class drive in the portfolio. This enables WD Se to deliver flexibility and value in all medium-workload applications.
- Optimized for replicated and NAS environments
- Feature-set enhanced to enable lower cost per gigabyte
- Enterprise-class design delivers capacities up to 4 TB
Bulk cloud storage, social networking, NAS, Big Data, replication-based distributed file systems, backup and archiving.
If your application deployment requires enterprise-class features and can withstand lower performance and reliability to gain a more cost-effective solution, WD Se is the right datacenter storage device for you.
WD Datacenter HDD Technology
Datacenters are building out at an incredible rate to keep up with the tremendous growth of data. A 42U storage rack may include over 900 drives, providing almost 3 PB of storage. A system that contains many drives needs to be specially designed with features and technologies that ensure reliability, scalability, high availability and deliver consistent levels of performance. However, some of these features and technologies create challenges for hard drives – environmental, compatibility and workload challenges.
Here is a deeper look at these challenges and a explanation of how hard drives need to be designed for enterprise-class datacenter and cloud storage environments. Needless to say, datacenters present challenging environments for hard disk drives, and therefore require a fundamentally different class of drive – an enterprise-class drive.
Challenge #1: Environment
The datacenter environment employs specialized server and storage systems containing high-speed fans, densely-packed drives and temperature fluctuations.
- High-speed fans are necessary to manage thermals but generate a wide range of vibrations
- Densely-packed drives induce vibration on each other, potentially causing system-level performance degradation
- Redundant power supplies reflect the multiple fail-over technologies that ensure 24/7 operation
- Datacenter geographical location and cooling solutions vary, creating temperature and altitude extremes
WD's solution: A storage portfolio built to withstand harsh datacenter conditions.
- RAFF + tied shaft motors are designed to compensate for multi-drive enclosures while ensuring consistent levels of performance
- Higher quality components - designed for 24/7/365 operation (8,760 power-on hours per year)
- High reliability with class-leading 5-year enterprise-grade warranty
- Support for a wide range of temperature and altitude ratings
Challenge #2 Compatibility
Datacenters require different host bus adapters and fault-tolerance schemes like RAID and replication to ensure maximum performance, manageability and availability of a large amount of storage space.
- RAID-based arrays demand high performance, tight performance variation, high error tolerance, and multiple interface options
- Replication-based systems deliver high levels of data availability vs. traditional RAID and can tolerate lower reliability and lower performing devices
- IT managers require interoperability across a wide range of host bus adapters that are deployed within their datacenters
WD's solution: Storage devices that work flawlessly with hundreds of different controllers in both RAID and replication arrays.
- Higher error tolerances, tight performance variation, and SAS and SATA options for RAID systems
- Datacenter quality products with right-sized error rates and performance that are optimized for replicated systems
- Broad HBA compatibility including functional and signal-integrity testing also tuned and optimized for system interoperability
Challenge #3 Workload
Datacenter and cloud storage systems use a wide variety of operating systems and applications that need to work flawlessly with their chosen device. Workloads are typically ten times greater than the workload of desktop or notebook computers and the storage devices must be able to handle workload-intensive applications 24 hours a day, 365 days a year.
- Applications have varying workloads – heavy reads or writes, sequential or random performance, low latency
- Some datacenter applications require 100% workload, 24 hours per day, 365 days per year
- OEMs are typically not aware of the types of workloads being employed on systems they sell
WD's solution: Storage devices that work flawlessly with hundreds of different controllers in both RAID and replication arrays.
- Higher RPM models for performance demanding applications
- Products are designed for 8,760 power-on hours per year, reading and writing continuously
- Massive testing – actual systems, actual workloads
- Specialized manufacturing and test processes
WD Surveillance Storage:
Safety and security are always a concern. Governments, corporations and even individuals must protect themselves and their assets. One of the most popular methods employed to enhance security and safety is with video – one of the most storage-intensive fi le formats around. As the affordability of high-defi nition surveillance cameras has declined and their widespread use has been adopted, the demand for reliable and scalable storage has skyrocketed. As a result - according to IHS - the market for enterprise storage solutions in security is forecasted to grow by a 14.8% compound annual growth rate (CAGR) over the next fi ve years.1 As evidenced by the data, increased presence and enhanced requirements of modern surveillance systems, there is a pressing need for specialized hard drives that offer more storage capacity and advanced features designed specifi cally for DVRs, NVRs, CCTV, IPTV and other surveillance mediums.
Surveillance storage for peace-of-mind
As a worldwide storage leader, WD strives to design drives to exceed the demanding requirements of digital video surveillance. With design, development, manufacturing and industry-leading customer support services, WD’s surveillance partners receive best-in-class products with innovative feature sets, ensuring that digital video surveillance systems equipped with WD drives are optimized for maximum performance. Whether you’re protecting your personal assets and loved ones or monitoring the business you worked hard to build, you can rely on surveillance storage built by one of the largest hard drive manufacturers in the world. WD surveillance hard drives are designed for high temperature, always-on, surveillance security systems to ensure reliability and quality video playback when you need it most.
WD gives you the security you want at the scale you need
Standard desktop hard drives are designed to operate approximately eight hours a day for five days per week. Consider now that a DVR or high-end surveillance system typically runs 24 hours per day, for seven days per week recording numerous simultaneous video streams. What’s needed for applications like these is another type of drive, a WD surveillance drive.
WD has designed a storage lineup perfect for digital video surveillance and its many unique environments and application sets. WD’s surveillance drives enable DVR, NVR, CCTV, IPTV and other digital video surveillance systems. These purpose-built drives deliver a comprehensive range of features and capabilities such as high-resolution image quality, streaming video from multiple high-definition cameras, video archiving with ultra-fast data access and on-demand video playback.
Regardless of the surveillance environment, whether it’s banking, casino, retail, commercial, residential, corporate, government or law enforcement, WD surveillance drives deliver the performance, capacity and reliability that surveillance applications require.
Desktop Drive Limitations
- Not designed for 24/7 surveillance environments
- No RAID support with error recovery controls
- Suboptimal power efficiency
- Not designed or tested for surveillance environments
- Potential integration and upgradability difficulties
- Minimal or no power backup in the event of power loss
Surveillance Hard Drive Benefits
- Built for 24/7 surveillance environments
- Supports multiple bays and multiple camera streams
- Engineered for compatibility in wide range of surveillance systems
- Enables upgrades & expansion of existing surveillance systems
- Lower power consumption
Understanding today’s surveillance market
The surveillance market is splitting into two primary types of systems; DVR – primarily analog systems that have cameras directly connected to the system, and NVR – digital systems that have cameras connected via IP (internet protocol). Due to the fact that DVRs have a finite number of cameras that can be physically attached, the number of streams and maximum workload on the hard drives can be determined. Since NVRs theoretically can have an unlimited number of cameras attached to the system, the number of streams, workload on the hard drive, and the system’s retention period can scale beyond that of a DVR.*
*There are limitations, primarily tied to system capability, so NVRs are not infinitely scalable.
Choosing the right surveillance-class drive
WD offers a complete line of surveillance-class storage designed for home, small to medium business or mission critical security systems. These hard drives are engineered to support the rigorous 24/7, always-on, high-definition video requirement set unique to surveillance security systems. Choose a hard drive that is designed and engineered for surveillance systems and enjoy the peace-of-mind you can only get from surveillance-class storage.
|WD Purple||WD Purple NV||WD Re|
|Summary||Balanced reliability, performance and cost storage.||Purpose built storage for NVR Surveillance systems.||Maximum reliability and performance storage for large business and mission critical surveillance.|
|Form Factor & Capacity||3.5-inch: 1 TB - 6 TB||3.5-inch: 4 TB & 6 TB||3.5-inch: 250 GB - 6 TB|
|Application||Mainstream Surveillance||Mid-range and Small-Med Business Surveillance||High-end and Mission Critical Surveillance|
|Usage Environment||Residential / SMB / Retail / Commercial||Residential / SMB / Retail / Commercial||Retail / Commercial / Banking / Casino / Corporate / Government / Law Enforcement|
|Number of Drive Bays||1 to 8 Bays||≥ 8 Bays (No Limit)*||≥ 8 Bays (No Limit)|
|Number of Cameras||1 to 32 Cameras||1 to 64 Cameras||No Limit|
|Power on Hours||24/7||24/7||24/7|
* The specific number of cameras and hard drive bays that can be supported will be dependent on a number of criteria including but not limited to: types and capability of cameras installed (resolution, frames per second, additional features) and the system’s hardware and software capability
There are an infinite number of different combinations of camera resolutions, live cameras, frames per second, and archive settings. WD understands the uniqueness of each combination and offers a full line of capacity products and points to fulfill the complex needs surveillance systems present.
Estimated Capacity Requirements, in TB based on follow system set up:
Standard Definition Camera Resolution: 0.3 megapixesl (640 x 480)
30 frames per second
Estimated Capacity Requirements, in TB based on follow system set up:
High Definition Camera Resolution: 2.1 megapixels or 1080p (1920x1080)
30 frames per second
Lower temperature means greater reliability
In addition to high levels of clarity, long-term reliability and low-power consumption are equally critical to surveillance systems. Designed for 24/7 operation, WD surveillance-class drives consume less power during spin-up and operation, minimize heat dissipation and vibration, and operate reliably without compromising performance. Reducing heat, noise, and vibration enables surveillance applications to operate more reliably over longer periods of time.
Thermal images taken at the WD labs demonstrate how much cooler WD drives are when compared to the competitors' standard 7200 RPM hard drives.
When a drive operates at a lower temperature its lifespan increases.
In addition to high levels of clarity, long-term reliability and low-power consumption are equally critical to surveillance systems. Designed for 24x7 operation, WD drives with WD GreenPower Technology™ consume less power during spin-up and operation, minimize heat dissipation and vibration, and operate reliably without compromising performance. Reducing heat, noise, and vibration enables surveillance applications to operate more reliably over longer periods of time.
Annual Failure Rate vs. Hard Drive Base Casting Temp
The illustration below demonstrates the annual failure rate and how it correlates to the hard drive base casting temperature and power on hours (POH). Failure rates significantly increase as temperature rises. In a system operating 24x7 the impact is substantial.
The evolution of of surveillance
Safety and security are always a concern. Governments, corporations, and even individuals must protect themselves and their assets. One of the most popular methods employed to enhance security and safety is digital video surveillance. With increased presence and enhanced requirements of modern surveillance systems, there is a pressing need for specialized hard drives with more storage capacity and advanced features designed specifically for SDVRs, CCTV, IPTV and other surveillance mediums. As a worldwide storage leader, WD continually strives to design drives to exceed the demanding requirements of digital video surveillance. With design, development, manufacturing, and industry-leading customer support services, WD's surveillance partners receive best-in-class products with innovative feature sets, ensuring that digital video surveillance systems equipped with WD drives are optimized for maximum performance.
Surveillance storage for peace-of-mind
Whether you're protecting your personal assets and loved ones or monitoring the business you worked hard to build, you can rely on surveillance-class storage built by one of the largest hard drive manufacturers in the world. WD Purple surveillance hard drives are designed for high temperature, always-on, surveillance security systems to ensure reliability and quality video play back when you need it most. Experience the security of knowing you're using a surveillance-class drive designed by a leader in the storage industry.
Top Angle View
Right Angle View
Download the WD Re Specsheet (PDF).