Hitachi Part #/MPN: 0A35155
DiscTech Item #: HIT-0A35155-FR-OE
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This item has a lead time for fulfilment (as listed), this is approximate. Your credit card will be authorized in full on the day of ordering; it will not be charged until the day of shipment.
Interface Types: SATA
Form Factor: 3.5inx1.0in LFF Hard Drive
Sector Size: 512 / 512e
Average Seek Time: 8.2 / 9.2
Electrical Interface: SATA 300 - 3.0Gbps
On-Board Cache: 32MB
Hitachi Deskstar 7K1000 1000GB / 1TB 7.2K SATA Hard Drive 0A35155 / HDS721010KLA330 - Factory Refurbished
An industry first, the Hitachi Deskstar 7K1000 hard disk drive delivers up to one terabyte of storage capacity for demanding consumer and commercial computing products. It leverages the industry’s most reliable perpendicular magnetic recording (PMR) techniques and the latest advancements in silent acoustics, shock protection, and head technology to maximize capacity, performance and fi eld reliability. Best-in-class power management and thermal emissions help manufacturers meet energy compliance targets and extend drive life.
Proven PMR technology
Field-proven in 2.5-in. drives, Hitachi’s PMR implementation continues to demonstrate reliability equal to or exceeding conventional longitudinal technology. The Deskstar 7K1000’s second-generation PMR head and media technology improves noise characteristics and thermal stability.
Reduced power idle modes
Unique to Hitachi drives, the Deskstar 7K1000 features three advanced low-power idle modes—active, unload and low-power. Together, they reduce power consumption at the drive level up to 20%, optimize non-operational latency and lower drive temperature for cooler system operation.
Outstanding shock resistance and power efficiency
Through a patented ramp load/unload design disk heads (in non-operating modes) are unloaded to a ramp outside the disk where they rest in a low-power ‘unload idle’ state until activated. In low RPM drives, this can reduce power by up to 50%. Ramp load/ unload provides tangible benefi ts for the drive and host product. It greatly minimizes the risk of shock damage by eliminating direct contact between the heads and disks. Reduced wear and heat improve overall drive reliability. In the event of power loss to the drive, heads are unloaded using energy extracted from the spinning disks. This patented power-saving feature helps to reduce overall maintenance costs and extends the drive service life. Another contributor to Deskstar 7K1000’s exceptional shock performance and power savings is the use of compact, low-mass femto air-bearing sliders.
Extended field reliability
An integrated thermal sensor monitors operating temperature, enabling the host processor to intelligently adjust airfl ow as needed for cooling. Sensor integration reduces component cost and increases reliability. Deskstar 7K1000’s thermal fl y-height control (TFC) uses an integrated heating element to precisely maintain a constant fl y-height throughout read and write operations. This reduces raw soft error rate and, in turn, improves overall data integrity, drive performance and reliability. Deskstar 7K1000’s iridium-manganese-chromium (IrMnCr) read head sensor technology offers better performance and reliability in harsh conditions.
Hitachi Design Studios
Located around the world, Hitachi Design Studios assist customers with all aspects of integrating hard drives into consumer electronic devices. Their services focus on drive selection, evaluation and optimization, integration and design-in consulting, software compatibility assessment, performance profi ling, problem analysis and reliability consulting.
Capacity: 1000GB / 1TB / 1 TB
This hard drive is compatible with any of our SATA hot-swappable trays.
0A35155 / HDS721010KLA330
Formatted Gbytes (512 bytes/sector)
1000GB / 1TB
Bytes per sector
Spindle speed (RPM)
I/O data transfer rate (Mbytes/sec max)
26.11 mm (1.028 inches)
101.85 mm (4.010 inches)
146.99 mm (5.787 inches)
Weight (max) grams
Average seek, read (msec typical)
Startup current (typical) 12V (peak)
Idle mode (typical) watts
5° to 60°C (op.)
–40° to 70°C (nonop.)
Click here to view the manufacturer's item description/brochure
Alternate MPNs: HDS721010KLA330
Weight: 1.8 lb
Warranty: 1 Year DiscTech
The product has been built, rebuilt or repaired at the original manufacturer's factory (Note we NEVER sell 3rd party repaired items, as we do not find them to be reliable enough). Often these products are extremely close to new in condition, except that they contain at least one recycled or repaired component. Failure rates are often lower on these devices since they have been far more thoroughly tested than new items.
The product has a manufacturer warranty for the time period specified.
1 Year DiscTech Warranty
The product has a DiscTech warranty for the time period specified. View our limited warranty