Western Digital RE2 WD5001ABYS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5

Performance SpecificationsRotational Speed7,200 RPM (nominal)Buffer Size16 MBAverage Latency4.20 ms (nominal)Load/unload Cycles50,000 minimum
Seek TimesRead Seek Time8.9 msWrite Seek Time8.9 ms (average)Track-To-Track Seek Time0.6 ms (average)Full Stroke Seek21.0 ms (average)
Transfer RatesBuffer To Host (Serial ATA)3 Gb/s (Max)


Physical SpecificationsFormatted Capacity500,107 MBCapacity500 GBInterfaceSATA 3 Gb/sUser Sectors Per Drive976,773,168


Physical DimensionsEnglishHeight1.028 InchesLength5.787 InchesWidth4.00 InchesWeight1.61 Pounds
MetricHeight25.4 mmLength147 mmWidth101.6 mmWeight0.73 kg


Environmental SpecificationsShockOperating Shock (Read)65G, 2 msNon-operating Shock250G, 2 ms
AcousticsIdle Mode28 dBA (average)Seek Mode 033 dBA (average)Seek Mode 329 dBA (average)
Temperature (English)Operating41° F to 131° FNon-operating-40° F to 149° F
Temperature (Metric)Operating5° C to 55° CNon-operating-40° C to 65° C
HumidityOperating5-95% RH non-condensingNon-operating5-95% RH non-condensing
Altitude (English)Operating-1,000 feet to 10,000 feetNon-operating-1,000 feet to 40,000 feet
Altitude (Metric)Operating-305M to 3,050MNon-operating-305M to 12,200M
VibrationOperatingLinear20-300 Hz, .75G (0 to peak)Random10-300 Hz, 0.004 g² / Hz
Non-operatingLow Frequency5-20 Hz, 0.195 inches (double amplitude)High Frequency20-500 Hz, 4.0G (0 to peak)


Electrical SpecificationsCurrent Requirements12 VDCRead/Write450 mAIdle430 mAStandby20 mASleep20 mA
5 VDCRead/Write800 mAIdle730 mAStandby270 mASleep250 mA
Power DissipationRead/Write9.50 WattsIdle8.75 WattsStandby1.60 WattsSleep1.50 Watts
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.