Hitachi Ultrastar™ A7K1000
3.5-inch Enterprise Hard Disk Drives
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 lower duty cycle enterprise applications. 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.
Finally, the Ultrastar A7K1000 is targeted at 1.2 million hours MTBF and provides the industry’s most comprehensive 5-year warranty.
Hitachi quality and service
Hitachi’s Ultrastar A7K1000 extends the company’s long-standing tradition of performance and capacity leadership. The proven drive design enables high reliability and availability to customer data. Ultrastar quality, performance, and world class technical support and service provides customers with a lower total cost of ownership over previous generations.
Hitachi drives are backed by an array of technical support and services, which may include customer and integration assistance. Hitachi is dedicated to providing a breadth of hard disk drive solutions to satisfy all of today’s demanding computing needs.
|
Highlights
|
Applications
|
Ultrastar™ A7K1000
| Model(s) | HUA721010KLA330 HUA721075KLA330 HUA721050KLA330 |
| Interface | 3 Gb/s SATA |
| Capacity ¹ | 1 TB / 750 GB / 500 GB |
| Recording zones | 30 |
| Data heads (physical) | 10 / 8 / 6 |
| Data disks | 5 / 4 / 3 |
| Max. areal density (Gbits/sq. inch) | 148 |
| Performance | |
| Data buffer (MB)³ | 32 |
| Rotational speed (RPM) | 7200 |
| Latency average (ms) | 4.17 |
| Media transfer rate (Mbits/sec, max) | 1070 |
| Sustained transfer rate (MB/sec) | 85 - 42 (zone 0-29) |
| Seek time (read, typical, ms)4 | 11 |
| Reliability | |
| Error rate (non-recoverable, bits read) | 1 in 1015 |
| Start/stops (at 40° C) | 50,000 |
| Availability ² (days/week) | 24 x 7 |
| Targeted MTBF ² (hours) | 1,200,000 |
| Power | |
| Requirement | +5 VDC (±5%), +12 VDC (+ 20% - 8%) |
| Startup current (max. A) | 2.0 (+ 12V) & 1.2 (+ 5V) |
| Idle (W) | 9.0 / 8.1 / 7.3 |
| Power consump. efficiency index (W/GB) | 0.009 / 0.0108 / 0.0146 |
| Physical | |
| z-height (mm, max) | 26.1 |
| Dimensions (width x depth, mm) | 101.6 x 147 |
| Weight (g, max) | 700 |
| Environmental (Operating) | |
| Ambient temperature | 5° to 60° 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 | -40° to 70° C |
| Shock (half-sine wave, G/2ms) | 300 |
| Vibration, random (G RMS 5 to 500 Hz) | 1.04, all axes |
| Environmental (Acoustics – A-Weighted Sound Power,Bels) | |
| Idle (Bels) | 2.9 |
Specific application environments such as temperature and duty cycle will affect the overall reliability rates. |
|