Overview     General specifications

Deskstar T7K500 hard disk drives specifications

Deskstar T7K500 models Capacity (GB) RPM Interface HDT725050VLAT80 500 7200 Parallel-ATA HDT725040VLAT80 400 7200 Parallel-ATA HDT725032VLAT80 320 7200 Parallel-ATA HDT725025VLAT80 250 7200 Parallel-ATA HDT725050VLA380 500 7200 Serial-ATA HDT725040VLA380 400 7200 Serial-ATA HDT725032VLA380 320 7200 Serial-ATA HDT725025VLA380 250 7200 Serial-ATA HDT725050VLA360 500 7200 Serial-ATA HDT725040VLA360 400 7200 Serial-ATA HDT725032VLA360 320 7200 Serial-ATA HDT725025VLA360 250 7200 Serial-ATA       Configuration Parallel-ATA Serial-ATA Interface PATA-133 SATA 3.0Gb/s Capacity (GB)1 500 / 400 / 320 / 250 Data heads (physical) 6 / 6 / 4 / 4 Data disks 3 / 3 / 2 / 2         Performance     Data buffer2 8 MB 16 MB / 8 MB Rotational speed (RPM) 7,200 Media transfer rate (max. Mbits/sec) 998 Interface transfer rate (max. MB/sec) 133 300 Seek time average, (read, typical (MS))3 8.5       Reliability     Error rate (non-recoverable) 1 in 10E14 Start/stops (at 40° C) 50,000 Availibility4 24/7       Acoustic     Idle (Bels) 3.0 (3disk) 2.8 (2 disk)       Power     Requirement +5 VDC (+/- 5%),   +12 VDC (+10%/-8%) Dissipation     Startup current (max. A) 2.0 (+12V) & 2.0 (+12V) &   1.1 (+5V) 1.3 (+5V) Idle (W) 6.0 (3 disk) 7.0 (3 disk)   5.0 (2 disk) 6.0 (2 disk)       Physical size     Height (mm) 26.1 Width (mm) 101.6 Depth (mm) 147 Weight (max. g) 640       Environmental characteristics     Operating     Ambient temperature 0° to 60°C Relative humidity (non-condensing) 8% to 90% Shock (half sine wave, 2ms) 55G Vibration (random (RMS) 0.67G for horizontal   0.67G for vertical         Non-operating     Ambient temperature -40° to 65° C Relative humidity (non-condensing) 5% to 95% Shock (half sine wave, 2ms) 300G Vibration (random (RMS) 1.04G rms (XYZ) RoHS compliant5 Yes

¹ GB equals one billion bytes when referring to hard drive capacity; accessible capacity may be less.

² Buffer capacity includes 270 KB used for drive firmware.

³ Includes command overhead.

⁴ Low duty cycle, non mission-critical applications in PC, nearline, consumer electronics and customer environments are different from application to application.

⁵ RoHS refers to the European Union Directive 2002/95/EC on the restriction of certain hazardous substances in electronic equipment.

Specific application environments such as temperature and duty cycle will affect the overall reliability rates. For specific application environment reliability rates, please consult Hitachi technical support.