1T HITACHI SATA HARD DRIVES

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The Hitachi 7K1000 drive we are reviewing today will be compared directly against the Seagate ST3750640AS 750GB and WD WD1500AHFD 150GB drives in our limited benchmark test suite. We have also included the results of drives from our previous articles and will provide additional results of the 7K1000 in our upcoming 500GB roundup.

Hitachi offers their excellent DOS based HD Feature Tool that allows the user to view the specifics of the drive and change certain options such as S.M.A.R.T., AAM, Power Management, and read and write optimizations. Our drive arrived with Automatic Acoustic Management turned on and set to the quietest level. We were able to easily set different levels or turn off AAM altogether. We found in our limited acoustical testing there was not a real difference between the 128 and 256 setting. Performance was slightly affected with AAM implemented but we felt the benefits of having it turned on outweighed any performance impact.

Hard Disk Test Comparison and Features

WD1500ADFDManufacturer's Stated Capacity: 1000.2GB (1 Terabyte)750GB150GBOperating System Stated Capacity:931.5 GB698.6 GB139.73 GBInterface:SATA 3Gb/sSATA 3Gb/sSATA 1.5Gb/sRotational Speed:7,200 RPM7,200 RPM10,000 RPMCache Size:32 MB16 MB16 MBAverage Latency:4.17 ms (nominal)4.16 ms (nominal)2.99 ms (nominal)Read Seek Time:8.5 ms / 14ms Silent11 ms4.6 msNumber of Heads:1084Number of Platters:542Power Draw Idle / Load:8.1W / 12.8W9.3W / 12.6W9.19W / 10.02WPower Draw Silent I / L:4.3W / 9.9W--Command Queuing:Native Command QueuingNative Command QueuingNative Command QueuingWarranty:3 Year - Retail or OEM5 Year - Retail or OEM5 Year - Retail or OEM
The Hitachi Deskstar 7K1000 is the first 1TB drive to ship based upon manufacturer's specifications with a 750 GB offering scheduled for availability next quarter. Of course the actual capacity of the drive is 931.5 GB, but due to the way manufacturers report capacity the drive is considered to be a 1TB offering. This drive is also Hitachi's first 3.5-inch hard drive to use PMR technology. Additional 1TB versions for the Enterprise and DVR/Set-Top markets will be released later this year.

The 7K1000 features a 5-platter 10-head perpendicular magnetic recording design with rotational speeds at 7200rpm. The cache size has been increased to 32MB from the previous 16MB on the TK series. Hitachi includes their ramp load/unload, advanced low-power idle modes, and thermal-fly height control technologies. This drive series also supports Native Command Queuing and hot-swap capabilities. The Hitachi Deskstar 7K1000 drives ship with a three year warranty and additional specifications can be