Western Digital WD3200SB IDE / ATA Hard Drive

Capacity: 320GB
Spindle Speed: 7,200RPM
Interface Type: IDE / ATA (3.5″)
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps): 61
Average Seek Time (read/write ms): 8.9 / 10.9
Electrical Interface Speed: EIDE / Ultra ATA/100 – 100MBps
On-Board Cache: 8MB

Key Features

• RAID-specific time-limited error recovery improves compatibility with RAID adapters, and prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop hard drives.
• 1 million hours MTBF meets enterprise-class reliability standards.
• Backed by an industry-leading five-year warranty.
• 8 MB cache provides a higher percentage of cache hits and significantly faster time to data than industry-standard 2 MB versions

• Specifications
  Model	WD3200SB
  Physical Specifications
  Capacity	320GB
  Interface	40-pin EIDE
  Number of Disks	3
  Data Surfaces	6
  Bytes per Sector	512
  User Sectors per Drive	625,142,448
  Performance Specifications
  Average Seek – Read	8.9 ms average
  Average Seek – Write
  Track-to-Track Seek
  Full Stroke Seek
  Index Pulse Period
  Average Latency
  Rotational Speed
  Data Transfer Rate (maximum) – Buffer to Disk	61 MB/s sustained
  Interleave	1:1
  Buffer Size	8 MB
  Error Rate – Unrecoverable	<1 in 1014 bits read
  Physical Dimensions
  Height	1.028 in. (26.1 mm)
  Width	4.00 in. (101.6 mm)
  Length	5.787 in. (147.0 mm)
  Weight	1.32 pounds (0.60 kg)
  Electrical Specifications
  Spinup – 12V/5V	1.8A/320mA
  Read/Write – 12V/5V	460mA/440mA
  Seek – 12V/5V	600mA/430mA
  Idle – 12V/5V	450mA/420mA
  Standby – 12V/5V	20.75mA/75mA
  Sleep – 12V/5V	20.75mA/75mA
  Power Average
  – Spinup	17.5W
  – Read/Write	7.75W
  – Seek	9.5W
  – Idle	7.5W
  – Standby	0.6W
  – Sleep	0.6W
  Environmental Specifications
  Shock
  – Operating (write)	30G, 2 ms
  – Operating (read)	65G, 2 ms
  – Non-operating (2 ms)	250G (3-platter)
  Vibration
  – Operating Linear:	20-300 Hz, 0.75G (0 to peak)
  – Operating Random:	10-300 Hz, 0.004 g2 /Hz
  – Non-operating (double amplitude)	5-20 Hz, 0.195 inches
  – Non-operating (0 to peak)	20-500 Hz, 4.0G
  Temperature and Humidity
  – Operating ambient temperature	5°C to 55°C (41°F to 131°F)
  – Humidity	5-95% RH non-condensing
  – Non-operating Temperature	-40°C to 65°C (-40°F to 149°F)
  Acoustics 2-Platter/3-Platter
  – Idle Mode (Avg. dBA)	26/28
  – Performance Seek Mode (Avg. dBA)	31/33
  – Quiet Seek Mode (Avg. dBA)	27/29
  – RoHS Compliant	Yes