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 up to 4 TB capacity, 64 MB cache, 4th generation vibration tolerance & 5-year limited manufacturer warranty.

Specification Capacity: 2TB Interface: SATA-6GB/s Form Factor: 3.5" Rotational Speed: 7200RPM Cache: 64MB Buffer to host data transfer rate (max): 6GB/s

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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 ...

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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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

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With advanced technology that delivers consistent high performance in a multitude of applications, & 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. High performance, capacity & reliability make WD Re ideal for data warehousing/mining & high-performance computing. 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 & reliability to any datacenter environment. Designed for durability & reliability
- With up to 1.4 million hours MTBF, this high performance drive delivers the highest level of reliability for 24x 7x 365 operation in the most demanding storage environments. Designed for quality & reliability
- Datacenter drives undergo at least 5 million hours of functional testing, & over 20 million hours of comprehensive Interoperability testing in an extensive array of server & storage systems. Please see the product AVL list on our website for more information. Dual processor
- Twice the processing power to maximize performance. Stable Trac™ – The motor shaft is secured at both ends to reduce system-induced vibration & stabilize platters for accurate tracking during read & write operations. Multi-axis shock sensor – Automatically detects the subtlest shock events & compensates to protect the data. 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. 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. Thermal extended burn-in test – Each drive is put through extended burn-in testing with thermal cycling to ensure reliable operation. Dynamic fly height technology – Each read-write head’s fly height is adjusted in real time for optimum reliability. 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 & above)








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