Seagate Barracuda 250GB SATA Hard Drive ST3250820AS
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Capacity: 250GB
Spindle Speed: 7,200RPM
Interface Type: SATA
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps): 65
Average Seek Time (read/write ms): 8 / 9
Electrical Interface Speed: SATA 300 – 3.0Gbps
On-Board Cache: 8MB
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Key Features and Benefits
- Broad range of capacities, from 200 GB to 750 GB, the highest in the INDUSTRY
- Available interfaces: SATA 3Gb/s, SATA 1.5Gb/s or Parallel ATA/100
- Perpendicular recording TECHNOLOGY for maximum drive capacity and reliability
- 8- and 16-MB cache buffer options
- Ultra-fast performance
- Superb reliability
- Whisper-quiet operation
- Enhanced G-Force Protection against handling damage
- 78 MB/s maximum sustained data transfer rate
- Clean Sweep calibration and Directed Offline scan diagnostics
- RoHS (restriction of hazardous substances) compliant
- 5-year warranty
Applications
- Gaming PCs
- Workstations
- High-end PCs
- Desktop RAID
- Mainstream PCs
- xATA servers
- USB/FireWire/eSATA external storage
Compatibility
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Drive specification
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ST3250820AS
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ST3250623AS
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ST3200826AS
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Formatted Gbytes (512 bytes/SECTOR)*
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250
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200
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Guaranteed SECTORS
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488,397,168
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390,721,968
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Bytes per SECTOR
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512
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Default SECTORS per track
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63
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Default read/write heads
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16
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Default cylinders
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16,383
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Recording density in BPI (bits/inch max)
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763,000
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Track density TPI (tracks/inch avg)
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120,000
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Areal density (Mbits/inch2 avg)
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91,560
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Spindle speed (RPM)
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7,200
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Internal data transfer rate (Mbytes/sec max)
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95
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Sustained transfer rate OD (Mbytes/sec)
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65
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I/O data transfer rate (Mbytes/sec max)
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150
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ATA data-transfer modes supported
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PIO modes 0–4Multiword DMA modes 0–2Ultra DMA modes 0–6
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SATA data-transfer modes supported
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1.5 Gbits/sec
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Cache buffer
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8 Mbytes
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16 Mbytes
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8 Mbytes
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Height (max)
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26.11 mm (1.028 inches)
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Width (max)
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101.85 mm (4.010 inches)
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Length (max)
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146.99 mm (5.787 inches)
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Weight (max) grams / lb.
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635 / 1.39
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Average latency (msec)
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4.16
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Power-on to ready (typical)
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10 sec
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Standby to ready (typical)
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10 sec
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Track-to-track seek time (msec typical)
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0.8 (read), 1.0 (write)
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Average seek, read (msec typical)
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8.0
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Average seek, write (msec typical)
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9.0
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Startup current (typical) 12V (peak)
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2.8 amps
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Seek power (typical) watts
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9.9
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Operating power (typical) watts
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9.2
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Idle mode (typical) watts
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7.2
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Standby mode (typical) watts
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1.2
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Sleep mode
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1.2
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Voltage tolerance
(including noise)
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5V ± 5%
12V ± 10%
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Ambient temperature
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0° to 60°C (op.)
–40° to 70°C (nonop.)
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Temperature gradient
(°C per hour max)
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20°C (operating)
30°C (nonoperating)
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Relative humidity
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5% to 90% (operating)
5% to 95% (nonoperating)
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Relative humidity gradient
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30% per hour max
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Wet bulb temperature(°C max)
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37.7 (operating)
40.0 (nonoperating)
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Altitude, operating
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–60.96 m to 3,048 m
(–200 ft to 10,000+ ft)
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Altitude, nonoperating (meters below mean sea level, max)
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–60.96 m to 12,192 m
(–200 ft to 40,000+ ft)
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Shock, operating (max at 2 msec)
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63 Gs
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Shock, nonoperating (max at 2 msec)
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300 Gs
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Vibration, operating
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5–22 Hz: Limited displacement
23–350 Hz: 0.5 G acceleration
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Vibration, nonoperating
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5–22 Hz: Limited displacement
23–350 Hz: 5 Gs acceleration
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Drive acoustics, sound power (bels)
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Idle**
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2.8 (typical)
3.4 (max)
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Performance seek
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3.7 (typical)3.9 (max)
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Nonrecoverable read errors
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1 per 1014 bits read
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Annualized Failure Rate (AFR)
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0.34%
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Service life
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5 Years
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Contact start-stop cycles(25°C, 50% relative humidity)
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50,000
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Supports Hotplug operation per SATA II specification
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Yes
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04 3550600
052 7036860
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