Hitachi 0A36143 / HUA721010KLA330 1TB SATA Hard Drive

Hitachi Part #/MPN: 0A36143

DiscTech Item #: HIT-0A36143-RF-OE


Enterprise Grade

Capacity: 1TB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 85 - 42

Average Seek Time: 8.2

Electrical Interface: SATA 300 - 3.0Gbps

On-Board Cache: 32MB

Hitachi Ultrastar A7K1000 0A36143 / HUA721010KLA330 1TB 7.2K 3Gbps Enterprise SATA Hard Drive - Refurbished

Hitachi Ultrastar A7K1000 0A36143 / HUA721010KLA330 1TB / 1000GB 7,200 RPM 3.0Gbps Enterprise SATA Hard Drive - Refurbished

Ultrastar™ A7K1000

World’s first terabyte hard drive for the enterprise – Ideal for high-capacity storage in enterprise and nearline environments


  • Up to 1 terabyte of capacity
  • 3 Gb/s SATA for configuration flexibility
  • Targeted 1.2 million hours MTBF
  • Enhanced Rotational Vibration Safeguard (RVS) for robust performance in multi-drive environments


  • RAID arrays
  • Tiered storage
  • Nearline storage
  • Disk-to-disk back up
  • Network Attached Storage (NAS)
  • Data warehousing

Record capacity, enterprise-class reliability
The Ultrastar™ A7K1000 delivers up to one terabyte of storage capacity in a standard 3.5-inch form factor, filling a vital need for high-density storage in the enterprise. As the third generation design, based on the popular Deskstar™ E7K500, the Ultrastar A7K1000 continues to set the standard in enterprise-class reliability and performance for enterprise and nearline applications requiring high-capacity storage. With a unique 5-platter design, Hitachi has relaxed the bit densities to achieve higher reliability. The Ultrastar A7K1000 is built using the industry’s most reliable perpendicular magnetic recording (PMR) recording heads and media.

Performance targeted for the enterprise
The Ultrastar A7K1000 features a 3 Gb/s SATA interface supporting key features in the Serial-ATA specification including Native Command Queuing (NCQ), staggered spin-up and hot-swap capability. The Ultrastar A7K1000 allows for configuration scalability and with the same physical connector as Serial Attached SCSI (SAS) drives, it’s ideal for use in mixed-drive environments.
In multi-drive environments, rotational vibration, which results from the vibration of neighboring drives in a system, can degrade hard drive performance. To aid in maintaining high performance, the Ultrastar A7K1000 incorporates enhanced Rotational Vibration Safeguard (RVS) technology providing up to 50% improvement over the previous generation against performance degradation, leading the industry.


This drive is compatible with any server that accepts 3.5"x1" (LFF) SATA hard drives.

Model / Part NumbersHUA721010KLA330 / 0A36143
Interface3 Gb/s SATA
Capacity1 TB / 1000 GB
Recording zones30
Data heads (physical)10
Data disks5
Max areal density (Gbits/sq. in.) 148
Data buffer (MB) 32
Rotational speed (RPM)7200
Latency average (ms)4.17
Media transfer rate (Mbits/sec, max) 1070
Interface transfer rate (MB/sec, max) 300
Sustained transfer rate (MB/sec) 84 - 42 (zone 0-29)
Seek time (read, typical, ms) 8.2
Error rate (non-recoverable, bits read)1 in 1015
Start/stops (at 40˚ C)50,000
Availability (days/week)24 x 7
Targeted MTBF (hours) 1,200,000
Idle (Bels)2.9
Requirement+5 VDC (+ -5%), +12 VDC (+ 20% - 8%)
Startup current (max. A)2.0 (+ 12V) & 1.2 (+ 5V)
Idle (W)9.0
Power consump. efficiency index (W/GB) 0.009
Physical size
z-height (mm, max)26.1
Dimensions (width x depth, mm)101.6 x 147
Weight (g, max) 700
Environmental (operating)
Ambient temperature5o to 60o C
Shock (half-sine wave, G/2ms) 70
Vibration, random (G RMS 5 to 500 Hz) 0.67, all axes
Environmental (non-operating)
Ambient temperature-40o to 70o C
Shock (half-sine wave, G/1ms)300
Vibration, random (G RMS 2 to 200 Hz)1.04, all axes

Click here to view the manufacturer's item description/brochure

Alternate MPNs: HUA721010KLA330

Weight: 1.8 lb

Warranty: 1 Year DiscTech


Condition Levels Explained

These products have had NO problems or failures, they merely have some usage. The product has been professionally returned to excellent condition. These items have been fully tested, formatted (if appropriate) &repackaged. Hard drives are fully vetted for surface defects and wear, only healthy disks are approved for resale to our customers. Please see our refurbishing process for more details. Watch a video about our refurbishing process

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty