SAS Hard Drives
300 GB, SAS 6 Gb/s
High Performance. Low Power. Enterprise Ready.
The 2.5-inch WD S25 SAS drives offer the powerful combination of enterprise-class performance and reduced power consumption required for demanding high-performance computing and mission-critical environments.
The WD S25 SAS hard drives provide up to 300 GB of high performance storage suitable for both enterprise server and enterprise storage applications. The supersonic 6 Gb/s SAS interface enables optimum data reliability, availability and scalability. The small form-factor, 70 percent smaller than 3.5-inch drives, allows more system airflow resulting in lower cooling costs.
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.
Ultra fast - 6 Gb/s transfer rates and SAS 2.0 feature set delivering sustained sequential data rates of 128 MB/sec and high random IO rates.
Low power consumption - Requires less than 8W to operate.
Dual port, full duplex connectivity for the mission-critical Enterprise topologies.
Industry's highest reliability rating at 1.6 million hours MTTF (MTBF).
Preformatted for PCs - Designed for use with Windows-based computers. Can be easily reformatted for use with Macs.
Planet friendly with RoHS compliant halogen reduced components.
Performance servers All I/O-driven applications and configurations
Performance storage Data centers and large data arrays
Rotational Speed 10,000 RPM (nominal)
Buffer Size 16 MB
Average Latency 3.00 ms (nominal)
Read Seek Time 3.6 ms (average)
Write Seek Time 4.2 ms (average)
Track-To-Track Seek Time 0.7 ms (average)
Transfer Rate (Buffer To Disk) 128 MB/s (Sustained)
Capacity 300 GB
Interface SAS 6 Gb/s
Form Factor 2.5-inch Drive
User Sectors Per Drive 586,072,368
Height 0.59 Inches
Length 3.94 Inches
Width 2.75 inches
Weight 0.48 Pounds
Height 15 mm
Length 100 mm
Width 69.85 mm
Weight 219 gm
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 300G, 2 ms
Idle Mode 27 dBA (average)
Seek Mode 0 34 dBA (average)
Operating 41° F to 131° F
Non-operating -40° F to 158° F
Operating 5° C to 55° C
Non-operating -40° C to 70° C
Operating 5-95% RH non-condensing
Non-operating 5-95% RH non-condensing
Linear 20-300 Hz, 0.75G (0 to peak)
Random 10-300 Hz, 0.008 g² / Hz
Low Frequency 0.05 g²/Hz (10 to 300 Hz)
High Frequency 20-500 Hz, 4.0G (0 to peak)
Read/Write 300 mA
Idle 140 mA
Read/Write 750 mA
Idle 700 mA
Read/Write 7.35 Watts
Idle 5.18 Watts