Desktop drives vs. surveillance-class storage WD violet surveillance-class storage has been tested to be compatible in a wide-range of security systems. These drives are designed to replace standard desktop drives that were not designed for the harsh 24/7 always-on, high-definition surveillance environment. Desktop drives are built to run for only short intervals & are not engineered to withstand high-temperature fluctuations & equipment vibrations found in a typical surveillance application. Surveillance storage for peace-of-mind Whether you're protecting your personal assets & 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 violet Surveillance Hard Drives are designed for high temperature, always-on, surveillance security systems to ensure reliability & 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 hard drive industry. Improve performance with All Frame WD violet surveillance-class hard drives are equipped with All Frame technology which works with ATA streaming to reduce frame loss, improve playback & increases the number of drive bays supported. All Frame reduces video interruptions that commonly occur when desktop hard drives are incorrectly used as storage in security systems. Missed frames & lost footage is a serious problem when an event occurs & surveillance footage needs to be retrieved. WD violet with All Frame provides the confidence you should expect when it's time to play back & review critical surveillance footage. Engineered for compatibility WD violet surveillance hard drives are built for compatibility with industry-leading chassis & chip set manufacturers for seamless integration into your new or existing video surveillance system. Optimized performance for up to 32 HD cameras WD violet hard drives are optimized to support up to 32 high-definition surveillance cameras, giving you the flexibility to upgrade & expand your security system in the future. Lower power consumption Low power consumption is crucial in high-temperature always-on surveillance environments. With exclusive Intelli Seek™ technology, WD violet drives calculate the optimum seek speeds which lowers power consumption, noise & vibration that can damage & cause drives to wear out more quickly. When you invest in a premium surveillance-class drive you worry less while enjoying the benefits over a longer period of time. ...

NVR vs DVR
- WD offers the Power of Choice when it comes to equipping a surveillance system for your home or business with the
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NVR vs DVR
- WD offers the Power of Choice when it comes to equipping a surveillance system for your home or business with the
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Capacity
- 1 TB Form Factor
- 3.5" x 1/3H Data Transfer Rate
- 600 MBps Buffer Size
- 32 MB Spindle Speed
- 7200 rpm




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WD RE SAS hard drives are engineered to offer data-hungry SAS storage systems the massive capacity they need without compromising top-of-the-line performance. Advanced reliability & data integrity features allow for 24x 7 operation in tightly packed vibration prone multi-drive systems. This uncompromising combination of high-capacity, peak performance & best-in-class reliability make WD RE SAS drives ideal for business critical applications. ...

Ideal for enterprise servers & storage, video surveillance, & other write-intensive applications, WD RE 7200 RPM Enterprise SATA hard drives offer large capacity, 64 MB cache, 4th generation vibration tolerance ...

WD RE SAS hard drives are engineered to offer data-hungry SAS storage systems the massive capacity they need without compromising top-of-the-line performance. Advanced reliability & data integrity features allow for 24x 7 operation in tightly packed vibration prone multi-drive systems. This uncompromising combination of high-capacity, peak performance & best-in-class reliability make WD RE SAS drives ideal for business critical applications. ...

Ideal for enterprise servers & storage, video surveillance, & other write-intensive applications, WD RE 7200 RPM Enterprise SATA hard drives offer high capacity, 64 MB cache, 4th generation vibration tolerance. WD Re Enterprise SATA hard drives offer best-in-class performance & low power consumption for business-critical environments. The 3.5-inch WD RE SATA drives offer the powerful combination of enterprise-class performance & highest capacity required for demanding high-performance computing & business-critical environments. Vibration protection Enhanced RAFF technology

Includes:: sophisticated electronics to monitor the drive & correct both linear & 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.

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Ideal for enterprise servers & storage, video surveillance, & other write-intensive applications, WD RE 7200 RPM Enterprise SATA hard drives offer up to 4 TB capacity, 64 MB cache, 4th generation vibration tolerance & 5-year limited manufacturer warranty.

Specification Capacity: 4TB Interface: SATA-6GB/s Form Factor: 3.5" Rotational Speed: 7200RPM Cache: 64MB Buffer to host data transfer rate (max): 6GB/s RECERTIFIED What is a Recertified Drive? Recertified products may consist of customer return units & may have been repaired. ALL recertified products are thoroughly tested & determined to meet stringent quality standards before they are distributed for sale. Please note that some recertified items may not be cosmetically mint condition & may have scratches or marks REFURBISHED Q: What is an NOH/ Refurbished unit? A: An NOH/ Refurbished unit is one that is " Newly Overhauled". At some point they have been returned from either an end user or a dealer, & may or may not have been used. IN SUMMARY
- Since these units have been in the field they cannot be sold as new, but are as good as new. What is the warranty on a recertified drive? Ebuyer will support all Recertified Hard Drives with a 90 day warranty


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Western Digital WD4001FYYG RE Enterprise SAS hard drive combines a 32 MB cache with a SAS 6 Gb/s transfer rate & dual stage actuation for lightning-fast performance in demanding server & storage applications. Featuring technologically advanced acoustics to minimise noise, cool drive operation & enhanced reliability features to help protect the Western Digital WD4001FYYG RE hard drive & the data stored on it. Hard Drive Statistics Speed: 7200 rpm Seek time: 5.5 ms avg Cache: 32MB Interface: SAS 6 Gb/s (300MB/sec) NCQ How This WD RE Enterprise Hard Drive Protects Your Data Western Digital WD4001FYYG RE include enhanced RAFF technology & sophisticated electronics to monitor the drive & correct both linear & rotational vibration in real time, the result is a significant performance improvement in high vibration environments over the previous generation of drives. Shock Guard instantaneously protects the hard drive against damage from bumps & vibrations while it is running, this technology enables the WD WD4001FYYG RE drive to achieve industry-leading shock specifications Key Features Dual actuator technology
- A head positioning system with two actuators that improves positional accuracy over the data track (s) Dual processor
- With double the processing power, WD RE boasts the highest performance of any drive in the WD RE family Stable Trac
- The motor shaft is secured at both ends to reduce system-induced vibration & stabilize platters for accurate tracking during read & write operations RAFF
- Enhanced RAFF technology

Includes:: sophisticated electronics to monitor the drive & correct both linear & rotational vibration in real time. The result is a significant performance improvement in high vibration environments over the previous generation of drives Intelli Seek
- Calculates optimum seek speeds to lower unnecessary power consumption, noise, & vibration. Multi-axis shock sensor
- Automatically detects the subtlest shock events & 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 Thermal extended burn-in test
- Each WD RE drive is put through extended burn-in testing with thermal cycling to ensure reliable operation No Touch ramp load technology
- The recording head never touches the disk media ensuring significantly less wear to the recording head & media as well as better drive protection in transit Perpendicular Magnetic Recording (PMR)
- WD RE drives utilize PMR technology to achieve even greater areal density, reliability, & 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 This Western Digital WD4001FYYG RE Stores: Up to 800, 000 digital photos Up to 1, 000, 000 songs (MP3) Up to 100, 000 songs (uncompressed CD quality) Up to 300 hours of Digital Video (DV) Up to 1540 hours of DVD quality video Up to 480 hours of HD video (Examples of the number of photos, songs, videos & 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 & format, settings, features, software & other factors.) One gigabyte (GB) = one billion bytes. One terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment.













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