Hard 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 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.

Finally, the Ultrastar A7K1000 is targeted at 1.2 million hours MTBF and provides the industry’s most comprehensive 5-year warranty.

Specs
Features:
HDD size:	3.5"
HDD capacity:	1000 GB
HDD speed:	7200 RPM
Interface:	Serial ATA II
Type:	HDD
Component for:	Server/workstation
Storage drive buffer size:	32 MB
HDD interface transfer rate:	3 Gbit/s
HDD average transfer rate:	85 MB/s
HDD number of heads:	10
HDD number of cylinders:	16383
Read seek time:	8.2 ms
Write seek time:	9.2 ms
Full stroke seek time:	14.7 ms
Track to track seek time:	0.8 ms
Average latency:	4.17 ms
SMART technology:	✓
Bytes per sector:	512
Start/stop cycles:	50000
Mean time between failures (MTBF):	1200000 h
Windows operating systems supported:	✓
Mac operating systems supported:	✓
Linux operating systems supported:	✓
Power:
Power consumption (idle):	9 W
Operating voltage:	5 / 12 V
Start-up current:	1.2 A
Operational conditions:
Operating temperature (T-T):	5 - 60 °C
Storage temperature (T-T):	-40 - 70 °C
Operating relative humidity (H-H):	8 - 90%
Storage relative humidity (H-H):	5 - 95%
Operating vibration:	0.67 G
Non-operating vibration:	1.04 G
Operating altitude:	-300 - 3048 m
Non-operating altitude:	-300 - 12000 m
Operating shock:	70 G
Non-operating shock:	300 G
Weight & dimensions:
Width:	101.6 mm
Height:	28.1 mm
Depth:	147 mm
Weight:	700 g
Packaging data:
Quantity:	1

Travelstar™ 5K750 is a 5400 RPM, 375GB/platter, 2.5-inch hard drive with capacities of 500GB, 640GB and 750GB. This standard 9.5mm, two-disk design, intended for use in notebook PCs, external storage, gaming consoles and other mobile applications, is Hitachi’s first to leverage Advanced Format. Advanced Format increases the physical sector size on hard drives from 512 bytes to 4096 (4K) bytes, which increases drive capacities and improves error correction capabilities.

Highlights
- Up to 750GB of capacity
- Advanced Format, industry standard 4K sector size
- 512 byte emulation (512e)
- Low power consumption
- Halogen-free for eco-friendly design
- Self-encrypting models available
- Enhanced availability (EA) models for applications needing around-the-clock access in lower-transaction environments

Applications / Environments
- Notebook PCs
- External storage
- Gaming PCs
- Small-form-factor video devices
- Blade servers (EA)
- Network routers (EA)
- Video surveillance (EA)

Specs
Features:
HDD size:	2.5"
HDD capacity:	750 GB
HDD speed:	5400 RPM
Interface:	Serial ATA
Storage drive buffer size:	8 MB
Full stroke seek time:	20 ms
Average latency:	5.5 ms
Power:
Operating voltage:	5 V
Operational conditions:
Operating temperature (T-T):	0 - 60 °C
Storage temperature (T-T):	-40 - 65 °C
Weight & dimensions:
Width:	70 mm
Height:	9.5 mm
Depth:	100 mm
Weight:	102 g
Other features:
Data transfer rate:	3 Gbit/s

With a robust fourth-generation mechanical design, Ultrastar A7K2000 is specifically built and tested for the Enterprise. Operating at 7200 RPM, it offers better overall performance than slower-RPM, capacity-oriented drives at impressively low power-consumption rates. The Ultrastar A7K2000 also features HGST-patented Rotational Vibration Safeguard (RVS) sensor technology, which optimizes drive reliability in multi-drive RAID arrays and rack-mounted systems. Backed by a five-year warranty, the Ultrastar platform has earned HGST a reputation among server and storage vendors as a global partner dedicated to delivering the highest quality and reliability in the industry.

Specs
Features:
HDD size:	3.5"
HDD capacity:	1000 GB
HDD speed:	7200 RPM
Interface:	Serial ATA II
Storage drive buffer size:	32 MB
Bytes per sector:	512
Power:
Power consumption (read):	8.4 W
Power consumption (write):	8.4 W
Power consumption (idle):	3.9 W
Operating voltage:	5 / 12 V
Start-up current:	1.2 A
Operational conditions:
Operating temperature (T-T):	5 - 60 °C
Storage temperature (T-T):	-40 - 70 °C
Operating vibration:	0.67 G
Operating shock:	70 G
Non-operating shock:	350 G
Weight & dimensions:
Width:	101.6 mm
Height:	26.1 mm
Depth:	147 mm
Weight:	680 g
Other features:
Data transfer rate:	3 Gbit/s

As data center professionals across the globe work to meet growing enterprise needs, they face the dilemma of storing more data in the same footprint while also reducing power and HVAC consumption. The new Ultrastar A7K2000 provides twice the data storage capacity of the
prior generation Ultrastar A7K1000 drive, and does so using fewer watts. It is now possible to achieve a colossal 1.2 petabytes (PB) in the footprint of a standard 19-inch enterprise storage rack by deploying the 2TB A7K2000 in a stack of ten 4U, 60-bay enclosures.

Operating at 7200 RPM, the Hitachi Ultrastar A7K2000 offers better overall performance than slower-RPM, capacity-oriented drives at impressively low power-consumption rates. When compared to the previous generation Ultrastar A7K1000, the A7K2000 offers up to a 155% improvement in sustained data transfer rate, and a 120% improvement in watts-per-GB. With five Advanced Power Management modes, a 36% reduction in watts during low-RPM idle mode, and using less than 1W during standby/sleep mode, the Ultrastar A7K2000 can help data centers achieve lower AC power and HVAC requirements, freeing up precious headroom
for growing enterprise needs.

Specs
Features:
HDD size:	3.5"
HDD capacity:	2048 GB
HDD speed:	7200 RPM
Interface:	Serial ATA
Type:	HDD
Storage drive buffer size:	32 MB
Read seek time:	8.5 ms
Write seek time:	8.5 ms
Power:
Power consumption (idle):	7.5 W
Operating voltage:	5 / 12 V
Operational conditions:
Operating temperature (T-T):	5 - 60 °C
Storage temperature (T-T):	-40 - 70 °C
Operating relative humidity (H-H):	8 - 90%
Storage relative humidity (H-H):	5 - 95%
Operating shock:	70 G
Non-operating shock:	300 G
Weight & dimensions:
Width:	101.6 mm
Height:	26.1 mm
Depth:	147 mm
Weight:	740 g