Hitachi Deskstar 7K1000 Terabyte Hard Drive
IntroductionÂ
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For many years, hard disk drives were large, cumbersome devices, more suited to use in the protected environment of data centres or large offices than in a harsh industrial environment (due to their delicacy), or small office or home (due to their size and power consumption).The capacity of hard drives has grown exponentially over time. With early personal computers, a drive with a 20 megabyte capacity was considered large. During the mid to late 1990s, when PCs were capable of storing not just text files and documents but pictures, music, and video, internal drives were made with 8 to 20 GB capacities. As of mid 2008, desktop hard disk drives typically have a capacity of 500 to 750 gigabytes, while the largest-capacity drives are 1.5 terabytes.
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Today we have have the pleasure of testing one of the largest capacity HDD’s available on the market – the Hitachi Deskstarâ„¢ 7K1000 1TB hard drive. Interestingly, Hitachi were the first to market with a 1TB HDD and the DeskStar 7K1000 is the direct result of Hitachi’s dedication to pushing the technological envelope. Let’s begin the review by taking a look at the Hitachi DeskStar 7K1000 1TB’s specifications…
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Specifications
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The specifications were copied directly and unashamedly from Hitachi’s product page
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Model(s) HDS721075KLA330
              HDS721010KLA330
              HDS721010KLA330
Interface Serial ATA 3.0Gb/s
Capacity 750GB 1TB
Sector size 512 bytes
Disks/heads 4/8 5/10
Performance
Data buffer 32MB
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 3 8.2ms read (typical), 9.2ms write (typical)
Silent-seek time 3 14ms read (typical), 15ms write (typical)
Reliability
Error rate (non-recoverable) 1 per 1.0 E15 bits transferred
Error rate (non-recoverable) 1 per 1.0 E15 bits transferred
Load/unload cycles (at 40°C) 50,000
Availability 4 (hrs/day x days/wk) 24×7
Warranty 3 years
Power
Supply +5 VDC (+/- 5%), +12 VDC (+10% / -8%)
Supply +5 VDC (+/- 5%), +12 VDC (+10% / -8%)
Start up current (max) 2.0A (+12V), 1.2A (+5V)
Random read/write (average) 11.5W 12.3W
Silent read/write (average) 9.2W 10.2W
Idle (average) 7.6W 8.4W
Unload idle 5.5W 6.1W
Low RPM idle 3.5W 3.7W
Acoustics
(A-weighted sound power) Idle 2.9bels (typical)
Silent seek, Seek 3.0bels (typical), 3.2bels (typical)
Physical
Dimensions H (26.1mm) x W (101.6mm) x D (147mm)
Dimensions H (26.1mm) x W (101.6mm) x D (147mm)
Weight (max) 700g
Environmental
Temperature 5 to 60 °C operating, -40 to 70 °C non-operating
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
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Hitachi has always been one of my favourite HDD manufacturers’. They are renowned for producing solid, quiet drives that provide more than acceptable read/write performance. The Hitachi DeskStar 7K1000, according to its specifications anyway, appears to continue the trend. Let’s take a look at the Hitachi DeskStar 7K1000 in a little more detail over the page…
