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Key Features and Benefits

  • 7200-RPM spin speed
  • 16-MB cache buffer
  • Perpendicular recording technology for maximum capacity and reliability
  • Native command queuing (NCQ) for enhanced performance
  • Highest reliability rating for 24 x 7 operation
  • Serial ATA (SATA) interface
  • Best-in-class rotational vibration (RV) tolerance
  • Multidrive firmware maximizes system availability
  • 5-year warranty

Applications

  • High-demand business applications
  • Network Attached Storage (NAS)
  • Storage Area Network (SAN)
  • Dynamic, capacity-intensive RAID systems
  • Maximum-capacity servers
  • Media content storage—audio, video, image
  • Reference and compliance data storage
  • Enterprise backup and restore—D2D, virtual tape
  • Collaboration—email, messaging
  • Infrastructure—web, print, file
  • Video surveillance

Resources:

Barracuda® ES SATA 3.0Gb/s 250-GB Hard Drive

ST3250820NS

Specifications
Model Number ST3250820NS
Interface SATA 3Gb/s
Cache 8MB
Capacity 250 GB
Guaranteed Sectors 488,397,168
Number of pins on the I/O connector 22
PHYSICAL
Height (max) 26.1 mm (1.028 inches)
Width (max) 101.6 mm (4.000 inches)
Length (max) 146.99 mm (5.787 inches)
Weight (typical) 580 grams (1.28 pounds)
COMPLIANCE
European Union Restriction of Hazardous Substances Y
PERFORMANCE
Spindle Speed 7200 rpm
Native Command Queuing Y
Average latency 4.16 msec
Random read seek time <8.50 msec
Random write seek time <10.0 msec
null 300 null
RELIABILITY
MTBF 1,200,000 hours
Annual Failure Rate 0.73 %
Unrecoverable read errors 1 in 10^14
POWER
Average idle current 9.30 watts
Average seek power 12.60 watts
Standby power 0.80 watts
Sleep power 0.80 null
Maximum start current, DC 2.80 amps
ENVIRONMENT
Ambient Temperature
Operating 5 to55 degrees C
Nonoperating -40 to70 degrees C
Maximum operating temperature change 20 degrees C per hour
Maximum nonoperating temperature change 30 degrees C per hour
Maximum operating case temperature 69 degrees C
Relative Humidity
Operating 5 to 90
Nonoperating 5 to 95
Maximum allowable humidity change 30 per hour
Altitude
Operating altitude (min) -60.96 meters (-200 feet)
Operating altitude (max) 3,048 meters (10,000 feet)
Nonoperating altitude (min) -60.96 meters (-200 feet)
Nonoperating altitude (max) 12,192 meters (40,000 feet)
Shock
Operating Shock (max) 63 Gs null 2 msec
Nonoperating Shock (max) 350 Gs null 2 msec
Vibration
Operating vibration 0.25 Gs null 350-500 Hz
Nonoperating vibration 1.0 Gs null 350-500 Hz
ACOUSTICS
Acoustics (Idle Volume) 2.5 bels
Acoustics (Seek Volume) 3.2 bels

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Find installation, troubleshooting and other support information for the Barracuda ES Hard Drive.