Hitachi Ultrastar A7K1000 SATA Hard Disk Drive 0A35151

Capacity: 500GB
Spindle Speed: 7,200RPM
Interface Type: SATA
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps): 42-85
Average Seek Time (read/write ms): 8.5
Electrical Interface Speed: SATA 300 – 3.0Gbps
On-Board Cache: 32MB

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.

Drive specification	0A35770 / HUA721050KLA330
Formatted Gbytes (512 bytes/SECTOR)	500
Bytes per SECTOR	512
Read/write heads	6
Data Disks	3
Spindle speed (RPM)	7,200
Internal data transfer rate (Mbits/sec max)	1070
I/O data transfer rate)	3.0Gb/s
Cache buffer	32 Mbytes
Height (max)	26.1 mm
Width (max)	101.6 mm
Length (max)	147 mm
Weight (max) grams	700
Average seek, read (msec typical)	8.5
Startup current (typical) 12V (peak)	2.0 amps
Idle mode (typical) watts	7.3
Ambient temperature	5° to 60 °C (op.) –40° to 70 °C (nonop.)