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Key Features and Benefits

  • 8-MB cache buffer
  • Ultra ATA/100 interface 
  • Perpendicular recording technology for increased storage capacity
  • Fast performance
  • Whisper-quiet acoustics
  • Superb reliability
  • Rugged mobility
  • Low power consumption

Applications

  • Mainstream laptops
  • Tablet PCs
  • External 2.5-inch hard drives
  • Printers and copiers
  • Non-mission-critical blade servers

Resources:

Momentus 5400.3 Ultra ATA/100 120-GB Hard Drive

ST9120822A

Specifications
Model Number ST9120822A
Interface Ultra ATA/100
Cache 8MB
Capacity 120 GB
Areal density (avg) 132 Gbits/inch2
Guaranteed Sectors 234,441,648
PHYSICAL
Height (max) 9.5 mm (0.374 inches)
Width (max) 69.85 mm (2.750 inches)
Length (max) 100.5 mm (3.957 inches)
Weight (typical) 102 grams (0.22 pounds)
PERFORMANCE
Spindle Speed 5,400 rpm
Average latency 5.56 msec
Random read seek time 11.0 msec
Random write seek time 13.0 msec
RELIABILITY
Annual Failure Rate 0.60%
POWER
Maximum start current, DC 1.0 amps
ACOUSTICS
Acoustics (Idle Volume) 2.4 bels
Acoustics (Seek Volume) 2.9 bels

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