Momentus 7200.4
The Seagate® Momentus® 7200.4 drive delivers the highest available capacity and performance in a laptop hard drive and draw only .05 percent more power than a 5400-RPM laptop drive.

320 GB • 7200 RPM • 2.5-Inch Laptop

Key Advantages

  • Highest available notebook performance
  • 320-GB capacity
  • Native Command Queuing
  • Green features:
    • Lowest-power 7200-RPM laptop hard drive yet
    • Ramp load features improve idle power consumption
  • State-of-the-art error correction
  • Fluid dynamic bearing motor
  • Support for S.M.A.R.T. drive monitoring and reporting
  • Support for Read Multiple and Write Multiple commands


Best-Fit Applications

  • High-performance and mainstream laptop PCs
  • Small form factor PCs
  • Workstations
  • Industrial applications
  • Non-mission-critical blade servers


Specifications

 320 GB1
Model Number ST9320423AS
Interface SATA 3Gb/s
Performance
Cache (MB) 16
Spindle Speed (RPM) 7200
Configuration/Organization
Logical CHS 16,383/16/63
Bytes per Sector 512
Reliability/Data integrity
Head-Rest Method QuietStep™ Ramp Load
Load/Unload Cycles 600,000
Nonrecoverable Read Errors per Bits Read 1 per 1014 bits read
Annualized Failure Rate (AFR) 0.5%
Mean Time Between Failures (MTBF, hours) 500,000
Limited Warranty (years) 3
Power Management
Startup Current 5v (amps max) 1.0
Power Mgmt (watts)
Seek
Idle/Standby		 1.554
0.67
Environmental
Temperature (°C)
Operating
Nonoperating		 0 to 60
–40 to 70
Shock (G)
Operating: 2 ms
Nonoperating: 1 ms		 350
1000

Acoustics (bels—sound power)
Idle
Performance Seek

 2.3
2.5
Physical
Height (in/mm) .370/9.5
Width (in/mm) 2.75/69.85
Depth (in/mm) 3.515/100.35
Weight (lb/g) 0.238/110
  1. One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity.