Western Digital offers WD Caviar SE Serial ATA (SATA) hard drives with features and capacities that are ideal for next-generation computers and low-end enterprise storage. Users benefit from a data transfer rate performance roadmap that begins with 150 MB/s and extends to 600 MB/s, as well as improved cabling that enables greater system design flexibility. Designers of enterprise storage systems and servers are increasingly using desktop-class, large-capacity SATA hard drives because of the advantages that the SATA interface provides.

WD CAVIAR SE PRODUCT BENEFITS

• 8 MB cache buffer – fast data transfer from a cache four times larger than the industry-standard 2 MB size.
• 7200 RPM – high-performance rotational speed for high-capacity hard drives.
• Data Lifeguard Tools™ – software utility that works in conjunction with the embedded Data Lifeguard features (including shock protection, an environmental protection system, and embedded error detection and repair features) to make hard drive management diagnostics and repair simple and worry-free.
• SecureConnect™ – provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives and cables; ensures backward compatibility with legacy SATA cables and backplanes.
• FlexPower™ – connector technology that accepts power from both industry-standard and new SATA power supplies.
• Point-to-point bus configuration – utilizes the full bandwidth of each drive interface in a networked environment.
• Hot plug support – ability to swap out a hard drive without having to power down the system or reboot promotes system design flexibility, data availability, and serviceability.
• Backplane compatibility – promotes expandability and flexibility in system architecture.
• Longer, narrower cable – prevents incorrect mating and bent pins, providing greater reliability and reduced service calls.

Physical Specifications
Formatted Capacity 1	250,059 MB
Interface	1.5 Gb/s Interface (Serial ATA 1.0)
Bytes Per Sector (STD)	512
User Sectors Per Drive	488,397,168
Dedicated Landing Zone	Yes
Actuator Latch/Auto Park	Yes

Performance Specifications
Data Transfer Rate - Buffer to Host - Buffer to Disk	150 MB/s 2 748 Mbits/s max
Average Read Seek	8.9 ms (average)
Track-to-Track Seek 3	2.0 ms (average)
Full Stroke Read Seek 3	21 ms (average)
Average Latency	4.2 ms
Rotational Speed	7200 RPM
Read Cache	Adaptive
Write Cache	Yes
Buffer	8 MB
Drive Ready Time	9.0 sec (average)
Start/Stop Cycles	50,000 minimum
LBA Support	Yes
Error Rate (non-recoverable)	<1 in 1014 bits read

Physical Dimensions
Height	English:	1.028 inches max
	Metric:	25.4 mm max
Length	English:	5.787 inches max
	Metric:	147.0 mm max
Width	English:	4.00 inches ±0.010 inch
	Metric:	101.6 mm ±0.25 mm
Weight	English:	1.32 pounds ±0.13 pounds
	Metric:	0.60 kg ±0.06 kg

Power Requirements (average)
Mode	RMS Current		Power
	12V (±10%)	5V (±5%)
Read/Write 4	530 mA	850 mA	10.6 W
Idle	510 mA	780 mA	10.0 W
Standby	30 mA	300 mA	1.8 W
Sleep	30 mA	190 mA	1.3 W

Environmental Specifications 5
Shock
Operating (2 ms)	30G (write), 65G (read)
Non-operating (2 ms)6	250G
Vibration
Operating - Random                    - Linear	0.004 g2/Hz (10 to 300 Hz) 20-300 Hz, 0.75G (0 to peak)
Non-operating - Linear	5-20 Hz, 0.195 inches (dbl amp) 20-500 Hz, 4.0G (0 to peak)
Operating Temperature and Humidity
Temperature	5°C to 55°C
Humidity	5-95% RH non-condensing
Thermal Gradient	20°C/hour (max)
Non-Operating Temperature and Humidity
Temperature	-40°C to 65°C
Humidity	5-95% RH non-condensing
Thermal Gradient	30°C/hour
Acoustics (average)
Idle Mode 7	34 dBA
Seek Mode 0 7	36 dBA
Seek Mode 3 7	35 dBA
Reliability Specifications
Warranty	3 years 8

¹ Western Digital defines a megabyte (MB) as 1,000,000 bytes, and a gigabyte (GB) as 1,000,000,000 bytes.
² Effective maximum transfer rate running Serial 1.0.
³ On reads and writes.
⁴ 20% duty cycle.
⁵ No non-recoverable errors during operating tests or after non-operating tests.
⁶ Half sine wave measured in 2 ms duration, measured without isolation.
⁷ Sound power level.
⁸ Three-year standard warranty on WD Caviar Special Edition hard drives. This standard warranty may be subject to variations imposed by local law or regulations.