WD RE2 WD5001ABYS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5-inch Hard Drive.
[WD5001ABYS]
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Product Description
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WD RE2
SATA Hard Drives
500 GB, 1.2 million hours MTBF, 16 MB Cache, 7200 RPM
Huge capacity loaded with enterprise-class reliability and performance.
Loaded with performance and reliability features, these drives are the perfect solution for servers, video surveillance, and other demanding write-intensive applications.
WD RE2 Overview
With 1.2 million hours MTBF, 3 Gb/s SATA technology, and enhanced vibration tolerance, WD RE2 drives offer an ideal combination of reliability, high capacity, and optimum performance for enterprise applications.Key Features
- Superior reliability - Designed and manufactured to provide server-class reliability in high duty cycle environments. With 1.2 million hours MTBF, these drives have the highest available reliability rating on a high-capacity drive.
- High capacity - Up to 750 GB of storage packed with server-class features and low cost-per-gigabyte value.
- Fast - With 3 Gb/s data transfer rate, native command queuing (NCQ), and 16 MB cache, these drives deliver optimum performance.
- Low power - Active Power Save delivers best-in-class seek mode power consumption through an advanced WD firmware which conserves power in active seek modes without degrading performance.
- RAID-specific, time-limited error recovery (TLER) - Significantly reduces drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.
- Rotary Acceleration Feed Forward (RAFF) - Provides enhanced vibration tolerance by optimizing operation and performance when the drives are used in vibration-prone, multi-drive systems such as rack-mounted servers or network storage.
- Perpendicular Magnetic Recording (PMR) - WD RE2 drives employ PMR technology to achieve even greater areal density.
Frequently Asked Questions
| Q: | Regular 7200 RPM desktop drives run fine in RAID environments; why do I need these drives? |
| A: | Unlike regular desktop drives, WD RE2 hard drives are engineered and
manufactured to enterprise-class standards and include features such as
time-limited error recovery, Active Power Save, and RAFF that make them
an ideal solution for RAID. |
| Q: | What is time-limited error recovery and why do I need it? |
| A: | Desktop drives are designed to protect and recover data, at times
pausing for as much as a few minutes to make sure that data is
recovered. Inside a RAID system, where the RAID controller handles error
recovery, the drive needn't pause for extended periods to recover data.
In fact, heroic error recovery attempts can cause a RAID system to drop
a drive out of the array. WD RE2 is engineered to prevent hard drive
error recovery fallout by limiting the drive's error recovery time. With
error recovery factory set to seven seconds, the drive has time to
attempt a recovery, allow the RAID controller to log the error, and
still stay online. |
| Q: | Don't I need SCSI data integrity For RAID environments? |
| A: | These drives include 32-bit CRC error checking for all bits
transmitted: command, data, and status and error checking to compare the
data read back from the hard drive to the data originally written to the
hard drive.
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Ideal For
Servers, SAN/NAS, scientific computing, life sciences, video
surveillance, enterprise backup, document/image management, audio/video
media applications, and other demanding write-intensive applications.
| Performance Specifications |
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Rotational Speed | 7,200 RPM (nominal) |
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Buffer Size | 16 MB |
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Average Latency | 4.20 ms (nominal) |
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Load/unload Cycles | 50,000 minimum |
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| Seek Times | ||
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Read Seek Time | 8.9 ms |
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Write Seek Time | 8.9 ms (average) |
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Track-To-Track Seek Time | 0.6 ms (average) |
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Full Stroke Seek | 21.0 ms (average) |
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| Transfer Rates | ||
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Buffer To Host (Serial ATA) | 3 Gb/s (Max) |
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| Physical Specifications |
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Formatted Capacity | 500,107 MB |
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Capacity | 500 GB |
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Interface | SATA 3 Gb/s |
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User Sectors Per Drive | 976,773,168 |
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| Physical Dimensions |
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| English | ||
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Height | 1.028 Inches |
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Depth | 5.787 Inches |
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Width | 4.00 Inches |
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Weight | 1.61 Pounds |
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| Metric | ||
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Height | 25.4 mm |
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Depth | 147 mm |
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Width | 101.6 mm |
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Weight | 0.73 kg |
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| Environmental Specifications |
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| Shock | ||
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Operating Shock (Read) | 65G, 2 ms |
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Non-operating Shock | 250G, 2 ms |
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| Acoustics | ||
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Idle Mode | 28 dBA (average) |
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Seek Mode 0 | 33 dBA (average) |
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Seek Mode 3 | 29 dBA (average) |
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| Temperature (English) | ||
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Operating | 41° F to 131° F |
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Non-operating | -40° F to 149° F |
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| Temperature (Metric) | ||
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Operating | 5° C to 55° C |
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Non-operating | -40° C to 65° C |
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| Humidity | ||
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Operating | 5-95% RH non-condensing |
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Non-operating | 5-95% RH non-condensing |
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| Altitude (English) | ||
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Operating | -1,000 feet to 10,000 feet |
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Non-operating | -1,000 feet to 40,000 feet |
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| Altitude (Metric) | ||
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Operating | -305M to 3,050M |
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Non-operating | -305M to 12,200M |
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| Vibration | ||
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Operating | |
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Linear |
20-300 Hz, .75G (0 to peak) |
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Random |
10-300 Hz, 0.004 g² / Hz |
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Non-operating | |
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Low
Frequency |
5-20 Hz, 0.195 inches (double amplitude) |
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High
Frequency |
20-500 Hz, 4.0G (0 to peak) |
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| Electrical Specifications |
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| Current Requirements | ||
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12 VDC | |
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Read/Write |
450 mA |
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Idle |
430 mA |
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Standby |
20 mA |
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Sleep |
20 mA |
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5 VDC | |
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Read/Write |
800 mA |
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Idle |
730 mA |
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Standby |
270 mA |
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Sleep |
250 mA |
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Power Dissipation | |
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Read/Write |
9.50 Watts |
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Idle |
8.75 Watts |
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Standby |
1.60 Watts |
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Sleep |
1.50 Watts |
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| 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. |
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