User manual WESTERN DIGITAL WD RE4-GP DATASHEET

[. . . ] WD RE4-GP Power-Saving Hard Drives Faster Performance Reduced Power Consumption Lower Cost of Ownership Enterprise Hard Drives Available in capacities up to 2 TB, WD RE4-GP SATA hard drives offer data-hungry organizations massive capacity with significant power savings and lower cost of ownership compared to competitors' standard enterprise-class drives. Based on WD's exclusive GreenPowerTM platform, these drives are designed to deliver power savings as the primary attribute and are equipped with 64 MB cache, dual processors, and IntelliPowerTM, a fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. Interface SATA Width/Height 3. 5-inch/1-inch Product Benefits Faster -- 64 MB cache, dual processors, and increased areal density yield twice the processing power which results in up to a 25 percent performance improvement over the previous generation. [. . . ] Additionally, GreenPowerTM drives consume less current during start up allowing more drives to spin up simultaneously resulting in faster system readiness. IntelliSeek -- Calculates optimum seek speeds to lower unnecessary power consumption, noise, and vibration. IntelliPark -- Delivers lower power consumption by automatically unloading recording heads during idle to reduce aerodynamic drag, and by disengaging read/write channel electronics. Active Power Management -- WD GreenPower drives monitor work load and automatically invoke idle mode whenever possible to further reduce unnecessary power consumption. Drive recovery time from idle mode is less than one second, providing seamless power management between the drive and the host controller. StableTracTM -- Secures the motor shaft at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations. RAID-specific time-limited error recovery (TLER) -- Pioneered by WD, this feature prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop drives. Rotary Acceleration Feed Forward (RAFFTM) optimizes operation and performance when the drives are used in vibration-prone multi-drive systems such as rackmounted servers. Note: Not all products may be available in all regions of the world. Enterprise Hard Drives WD RE4-GP Power Saving Hard Drives Specifications Model number Interface Formatted capacity User sectors per drive Native command queuing SATA latching connector Actuator latch/auto park Form factor RoHS compliant2 Performance 1 2 TB WD2002FYPS SATA 3 Gb/s 2, 000, 398 MB 3, 907, 029, 168 Yes Yes Yes 3. 5-inch Yes Data transfer rate (max) Buffer to host Host to/from drive (sustained) Cache (MB) Rotational speed (RPM) Average drive ready time (sec) Configuration/Organization 3 Gb/s 110 MB/s 64 IntelliPower 17 8/4 512 600, 000 <1 in 1015 5 1. 8 6. 8 3. 7 0. 8 0. 8 Heads/disks Bytes per sector (STD) Reliability/Data Integrity Load/unload cycles3 Non-recoverable read errors per bits read Limited warranty (years)4 Power Management 12VDC (A, max) Average power requirements (W) Read/Write Idle Standby Sleep Environmental Specifications5 Temperature (°C) Operating Non-operating Shock (Gs) Operating (2 ms, read) Operating (2 ms, read/write) Non-operating (2 ms) Average acoustics (dBA)6 Idle mode Performance seek mode Quiet seek mode Physical Dimensions 5 to 55 -40 to 70 30 65 300 25 29 26 For service and literature: Height (in. /mm, max) Length (in. /mm, max) Width (in. /mm, ± . 01 in. ) Weight (lb. /kg, ± 10%) 1. 028/26. 1 5. 787/147 4/101. 6 1. 61/0. 73 support. wdc. com www. westerndigital. com 800. ASK. 4WDC 800. 832. 4778 +800. 6008. 6008 00800. 27549338 +31. 880062100 North America Spanish Asia Pacific Europe (toll free where available) Europe/Middle East/Africa 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. 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. [. . . ] and other countries; and IntelliSeek, IntelliPower, GreenPower, StableTrac, IntelliPark, the FIT Lab logo, and RAFF are trademarks of Western Digital Technologies, Inc. Western Digital 20511 Lake Forest Drive Lake Forest, California 92630 U. S. A 2879-701312-A00 Apr 2009 [. . . ]