HITACHI 7K80 80GB SATA II NCQ 8MB buff.

[GIASAN]

Salve ho preso 2 di questi dischi e li ho messi in raid 0, devo dire che vanno molto bene, sono silenziosi e veloci.
Purtroppo non riesco a trovare recensioni on line, comunque metto la descrizione tecnica di hitachi. La sigla dei miei è questa:
HDS728080PLA380 80 7200 Serial-ATA

questo i dati tecnici:

Deskstar 7K80 hard disk drives specifications
Deskstar 7K80 model summary Capacity (GB) RPM Interface

HDS728040PLAT20 40 7200 Parallel-ATA

HDS728080PLAT20 80 7200 Parallel-ATA

HDS728040PLA320 40 7200 Serial-ATA

HDS728080PLA380 80 7200 Serial-ATA


Configuration Parallel-ATA Serial-ATA

Interface ATA 133 SATA 3.0Gb/s
Capacity (GB)1 80 / 40
Data heads (physical) 2 / 1
Data disks 1

Performance
Data buffer2 (MB) 2 MB 8 MB (80GB) / 2 MB (40GB)
Rotational speed (rpm) 7,200
Media transfer rate (max. Mbits/sec) 757
Interface transfer rate (max. MB/sec) 133 300
Sustained data rate (MB/sec) 61.1 - 29.6 (zone 0 - 29)
Average seek time (ms) (read, typical)3 8.8

Reliability
Error rate (non-recoverable) 1 in 10E14
Start/stops (at 40° C) 50,000

Acoustic
Idle (Bels) 2.6

Power
Requirement +5 VDC (+/- 5%), +12 VDC (+10%/-8%)
Dissipation
Startup current (max. A) 1.72 (+12V) & 0.68 (+5V) 1.83 (+12V) & 1.00 (+5V)
Idle (W) 4.7 5.7

Physical size
Height (mm) 25.4
Width (mm) 101.6
Depth (mm) 146
Weight (max. g) 560

Environmental characteristics
Operating
Ambient temperature (C) 5° to 55°
Relative humidity (non-condensing) 8% to 80%
Shock (half sine wave, 2ms) (G) 55
Vibration (random (RMS)) (G) 0.67 for horizontal, 0.56 for vertical

Non-operating
Ambient temperature (C) -40° to 65° C
Relative humidity (non-condensing) 5% to 95%
Shock (half sine wave, 2ms) (G) 350
Vibration (random (RMS) (G) 1.04 rms (XYZ)
RoHS compliant4 Yes


1 GB equals one billion bytes when referring to hard drive capacity; accessible capacity may be less.

2 Buffer capacity includes 270 or less KB used for drive firmware.

3 Includes command overhead.

4 RoHS refers to the European Union Directive 2002/95/EC on the restriction of certain hazardous substances in electrical and electronic equipment.


Highlights:

SATA 3.0 Gb/s and Native Command Queuing for maximum data speeds
80 GB and 40 GB capacities with either Serial ATA or Parallel ATA interface
ECC and CRC protection within drive circuitry
Low-power design reduces system costs and drives high reliability
Quiet operating modes for easy integration into noise sensitive environments


Why Serial ATA 3.0Gb/s?
The newly approved SATA specification has standardized three important features:

> 3.0 Gb/s (300 MB/s) interface data rate
> NCQ (native command queuing)
> Staggered (delayed) spin-up

The 7K80 provides all of these enhancements to enable faster data access and better power management to the system. The drive is also backward compatible for those wishing to upgrade their storage of SATA 1.0 systems.

A/V Streaming Feature Set

The Deskstar 7K80 is the second generation Deskstar drive to enable the host system to optimize storage of data. This is achieved by Hitachi’s “Smooth Stream” technology which gives the host control over the drive’s error recovery process. This important ATA-7 Standards feature fine tunes the Deskstar to capture long audio or video data streams.

Applications

> Traditional PCs
> ATA servers
> PC gaming
> Video surveillance
> Disk to disk backup and recovery
> Media storage (DVR)
> Industrial automation
Hitachi quality and service

The Hitachi Deskstar 7K80 extends the company’s long-standing tradition of performance leadership. Hitachi’s standardized features in desktop solutions enable fast transfer rates, low power utilization and quiet acoustics. These features combine to make the Deskstar 7K80 ideal not only for standard PC systems but also for personal video recorders and other non-PC computing requirements.

Hitachi is dedicated to provide a breadth of hard disk drive solutions to satisfy all of today’s demanding computing needs.