WD RE4 Enterprise SATA Hard Drives Ideal for servers, video surveillance, and other demanding write-intensive applications, WD RE4 7200 RPM Enterprise SATA hard drives offer up to 2 TB capacity, 64 MB cache, 4th generation vibration tolerance and 5-year limited warranty. INTERFACE WIDTH/HEIGHT ROTATIONAL SPEED CAPACITIES SATA 3 Gb/s 3.5-inch/1-inch 7200 RPM 250 GB to 2 TB MODEL NUMBERS Note: Not all products may be WD2003FYYS WD5003ABYX available in all regions of the WD1003FBYX WD2503ABYX world. Product Benefits Massive capacity Dual actuator technology Multi-axis shock sensor Thermal extended burn-in test WD RE4 Enterprise SATA drives are A head positioning system with two Automatically detects the subtlest shock Each drive is put through extended burn- available with up to 2 TB of cavernous actuators that improves positional events and compensates to protect the in testing with thermal cycling to ensure capacity. accuracy over the data track(s). The data. reliable operation. primary actuator provides coarse displacement using conventional Dual processor RAID-specific, time-limited error Third generation dynamic fly electromagnetic actuator principles. The With double the processing power, recovery (TLER) height secondary actuator uses piezoelectric WD RE4 boasts the highest performance motion to fine tune the head positioning Prevents drive fallout caused by the Each read-write head’s fly height is of any drive in the WD RE family. to a higher degree of accuracy. (2 TB extended hard drive error-recovery adjusted in real time for optimum only) processes common to desktop drives. reliability. RAFF™ StableTrac™ NoTouch™ ramp load 24x7 reliability Enhanced RAFF technology includes sophisticated electronics to monitor the The motor shaft is secured at both ends technology With 1.2 million hours MTBF (tested at drive and correct both linear and to reduce system-induced vibration and 100% duty cycle), these drives have the rotational vibration in real time. The result stabilize platters for accurate tracking The recording head never touches the highest available reliability rating on a disk media ensuring significantly less is a significant performance improvement during read and write operations. (1 TB high-capacity drive. wear to the recording head and media as in high vibration environments over the and larger drives only) well as better drive protection in transit. previous generation of drives. IntelliSeek™ Calculates optimum seek speeds to lower power consumption, noise, and vibration. Applications Ideal for servers, storage arrays, video surveillance, and other demanding applications. WD RE4 1 2 TB 1 TB 500 GB 250 GB Specifications Model number WD2003FYYS WD1003FBYX WD5003ABYX WD2503ABYX Interface SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s Formatted capacity 2 TB 1 TB 500 GB 251 GB User sectors per drive 3,907,029,168 1,953,525,168 976,773,168 490,350,672 Native command queuing Yes Yes Yes Yes SATA latching connector Yes Yes Yes Yes Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch Performance Data transfer rate (max) Buffer to host 3 Gb/s 3 Gb/s 3 Gb/s 3 Gb/s Host to/from drive (sustained) 138 MB/s 128 MB/s 128 MB/s 128 MB/s Cache (MB) 64 64 64 64 Rotational speed (RPM) 7200 7200 7200 7200 Average drive ready time (sec) 21 18 14 14 Configuration/Organization Heads/disks 8/4 4/2 2/1 1/1 Bytes per sector (STD) 512 512 512 512 Reliability/Data Integrity 2 Load/unload cycles 600,000 600,000 600,000 600,000 15 15 15 15 Non-recoverable read errors per bits read <1 in 10 <1 in 10 <1 in 10 <1 in 10 3 Limited warranty (years) 5555 Power Management 12VDC (A, max) 1.8 1.6 2.25 2.25 Average power requirements (W) Read/Write 10.7 7.9 6.4 6.4 Idle 8.2 5.9 4.5 4.5 Standby 1.3 0.7 0.8 0.8 Sleep 1.3 0.7 0.8 0.8 4 Environmental Specifications Temperature (°C) Operating 5 to 55 5 to 55 5 to 55 5 to 55 Non-operating -40 to 70 -40 to 70 -40 to 70 -40 to 70 Shock (Gs) Operating (2 ms, read/write) 30 30 30 30 Operating (2 ms, read) 65 65 65 65 Non-operating (2 ms) 300 300 350 350 5 Average acoustics (dBA) Idle mode 29 28 27 27 Performance seek mode 34 33 30 30 Quiet seek mode 30 29 29 29 Physical Dimensions Height (in./mm, max) 1.028/26.1 1.028/26.1 1.028/26.1 1.028/26.1 Length (in./mm, max) 5.787/147 5.787/147 5.787/147 5.787/147 Width (in./mm, ± .01 in.) 4/101.6 4/101.6 4/101.6 4/101.6 Weight (lb./kg, ± 10%) 1.66/0.75 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 SATA- IO organization as of the date of this specification sheet. Visit www.sata-io.org for details. 2 Controlled unload at ambient condition 3 The term of the limited warranty may vary by region. Visit support.wdc.com/warranty for details. 4 No non-recoverable errors during operating tests or after non-operating tests. 5 Sound power level. Western Digital For service and literature: 3355 Michelson Drive, Suite 100 http://support.wdc.com Irvine, California 92612 www.westerndigital.com U.S.A. 800.ASK.4WDC North America 800.832.4778 Spanish +800.6008.6008 Asia Pacific 00800.27549338 Europe (toll free where available) +31.880062100 Europe/Middle East/Africa Canada ICES-003 Class B / NMB-003 Classe B Western Digital, WD, the WD logo, and Put Your Life On It are registered trademarks in the U.S. and other countries; and NoTouch, IntelliSeek, StableTrac, RAFF, and FIT Lab are trademarks of Western Digital Technologies, Inc. Other marks may be mentioned herein that belong to other companies. Product specifications subject to change without notice. © 2011 Western Digital Technologies, Inc. All rights reserved. 2879-701338-A06 Sep 2011