WD S25 SAS Hard Drives WD S25 SAS hard drives provide up to 600 GB of high performance storage suitable for both enterprise server and enterprise storage applications. The ultra-fast 6 Gb/s SAS interface enables optimum data reliability, availability, and scalability. In an environment where space and power are limited, the WD S25 drives are an effective solution for high performance computing solutions such as power-constrained data centers, database transaction processing, and rack, tower, and blade servers. INTERFACE WIDTH/HEIGHT ROTATIONAL SPEED CAPACITIES SAS 6 Gb/s 2.5-inch/0.6-inch 10,000 RPM 147, 300, 450, and 600 GB MODEL NUMBERS Note: Not all products may be WD6000BKHG WD3000BKFG available in all regions of the WD4500BKHG WD1460BKFG world. Product Benefits Ultra-fast SAS storage Low power consumption Rotary Acceleration Feed Environmentally conscious ™ WD S25 delivers 6 Gb/s transfer rates, This 2.5-inch SAS drive requires less than Forward (RAFF ) In addition to being ROHS compliant, sustained sequential data rates up to 8 watts to operate. these drives also incorporate a halogen Optimizes operation and performance 155 MB/s, and fast average read seek free design. when the drives are used in vibration- times of 3.8 ms or less. Ultra-cool operation prone, multi-drive chassis. 5-year limited warranty The small form-factor, 70 percent smaller Industry’s highest reliability ™ than 3.5-inch drives, allows more system NoTouch ramp load technology rating airflow resulting in lower cooling costs. The recording head never touches the With a field-tested MTBF of up to 1.75 disk media ensuring significantly less million hours, these high performance wear to the recording head and media as drives are perfect for enterprise server well as better drive protection in transit. and enterprise storage applications. (BKHG models) Applications „ Performance servers – All I/O-driven applications and configurations „ Performance storage – Data centers and large data arrays WD S25 1 600 GB 450 GB 300 GB 147 GB Specifications Model number WD6000BKHG WD4500BKHG WD3000BKFG WD1460BKFG Interface SAS 6 Gb/s SAS 6 Gb/s SAS 6 Gb/s SAS 6 Gb/s Formatted capacity 600 GB 450 GB 300 GB 147 GB User sectors per drive 1,172,123,568 879,097,968 586,072,368 287,186,256 SCSI command queuing Yes Yes Yes Yes Form factor 2.5-inch 2.5-inch 2.5-inch 2.5-inch 2 RoHS compliant Yes Yes Yes Yes Performance Data transfer rate (max) Buffer to host 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s Host to/from drive (sustained) 155 MB/s 155 MB/s 126 MB/s 126 MB/s Cache (MB) 32 32 16 16 Rotational speed (RPM) 10,000 10,000 10,000 10,000 Average drive ready time (sec) 16 16 16 16 Reliability/Data Integrity 3 Load/unload cycles 600,000 600,000 50,000 50,000 17 17 17 17 Non-recoverable read errors per bits read <10 in 10 <10 in 10 <10 in 10 <10 in 10 4 MTBF (hours) 1,750,000 1,750,000 1,600,000 1,600,000 5 Limited warranty (years) 5555 Power Management 12VDC (A, max) 1.6 1.6 1.45 1.45 Average power requirements (W) Sequential read/write 8.3 8.3 6.6 6.6 Random read/write 7.1 7.1 7.4 7.4 Idle 5.4 5.4 5.2 5.2 6 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) 300 300 300 300 7 Average acoustics (dBA) Idle mode 28 28 27 27 Performance seek mode 34 34 34 34 Physical Dimensions Height (in./mm, max) 0.59/15 0.59/15 0.59/15 0.59/15 Length (in./mm, max) 3.94/100 3.94/100 3.94/100 3.94/100 Width (in./mm, ± .01 in.) 2.75/69.85 2.75/69.85 2.75/69.85 2.75/69.85 Weight (lb./kg, ± 10%) 0.48/0.22 0.48/0.22 0.48/0.22 0.48/0.22 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 SAS 6 Gb/s transfer rate calculated according to the SAS specification published by the INCITS T10 organization as of the date of this specification sheet. Visit www.t10.org for details. 2 WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances. 3 Controlled unload at ambient condition 4 100% workload at 50°C on base casting. 5 The term of the limited warranty may vary by region. Visit http://support.wdc.com/warranty for details. 6 No non-recoverable errors during operating tests or after non-operating tests. 7 Sound power level. Western Digital, WD, the WD logo, For service and literature: and Put Your Life On It are registered http://support.wdc.com trademarks in the U.S. and other countries; www.westerndigital.com and RAFF, NoTouch, and FIT Lab are 800.ASK.4WDC North America trademarks of Western Digital 800.832.4778 Spanish Technologies, Inc. Other marks may be +800.6008.6008 Asia Pacific mentioned herein that belong to other 00800.27549338 Europe companies. Product specifications subject (toll free where available) to change without notice. +31.880062100 Europe/Middle East/Africa © 2011 Western Digital Technologies, Inc. All rights reserved. Western Digital 3355 Michelson Drive, Suite 100 Irvine, California 92612 U.S.A. 2879-771379-A02 Jan 2011