Hitachi Deskstar 7K1000 1TerraByte SATA Hard Drive

Hitachi DeskStar 7K1000 is an award winning Hard Drive that comes in two capacities, 750 Gigabytes and 1 Terrabyte.

The main features that sets the drive apart are:

- Storage capacities up to 1TB
- Perpendicular magnetic recording technology
- SATA 3.0Gb/s interface
- Ramp load design increases shock protection and power savings
- Thermal monitoring and fly height control enhance reliability
- Three low-power idle modes boost power efficiency
- Silent seek acoustics achieve ultra-quiet operation
- Host/drive authentication for hardware security

Data Sheet is as follows:


Model(s): HDS721075KLA330 HDS721010KLA330
Interface: Serial ATA 3.0Gb/s
Capacity: 750 GB and 1TB
Sector size: 512 bytes
Disks/heads: 4/8 for 750 GB Drive and 5/10 for 1 TB Drive


Data buffer: 32MB
Rotational speed: 7200 RPM
Media transfer rate (max): 1070Mb/s
Interface transfer rate (max): 300Mb/s
Latency: 4.17ms (average, 7200 RPM)
Seek time: 8.2ms read (typical), 9.2ms write (typical)
Silent-seek time: 14ms read (typical), 15ms write (typical)


Error rate (non-recoverable): 1 per 1.0 E15 bits transferred
Load/unload cycles (at 40°C): 50,000
Availability (hrs/day x days/wk): 24x7
Warranty: 3 years


Supply: +5 VDC (+/- 5%), +12 VDC (+10% / -8%)
Start up current (max): 2.0A (+12V), 1.2A (+5V)
Random read/write (average): 11.5W for 750 GB drive and 12.3W for 1 TB drive
Silent read/write (average): 9.2W for 750 GB drive and 10.2W for 1 TB drive
Idle (average): 7.6W for 750 GB drive and 8.4W for 1 TB drive
Unload idle: 5.5W for 750 GB drive and 6.1W for 1 TB drive
Low RPM idle: 3.5W for 750 GB drive and 3.7W for 1 TB drive

Acoustics (A-weighted sound power):

Idle: 2.9bels (typical)
Silent seek, Seek: 3.0bels (typical), 3.2bels (typical)


Dimensions: H (26.1mm) x W (101.6mm) x D (147mm)
Weight (max): 700g


Temperature: 5 to 60 °C operating, -40 to 70 °C non-operating
Relative humidity (non-condensing): 8 to 90% operating, 5 to 95% non-operating
Shock (half sine wave): 70 G/2 ms pulse operating, 300 G/1 ms pulse non-operating
Vibration (random) (RMS): 0.67G horizontal, 0.56G vertical operating, 1.04G XYZ non-operating
RoHS 5 compliant: yes