HP DC7900 - Manual (Page 39)

Seek Time Seek Time Seek Time Seek Time (typical reads,
includes controller
overhead, including
settling) Single Track Single Track Single Track Single Track 2.0 ms
Average Average Average Average 12 ms
Full-Stroke Full-Stroke Full-Stroke Full-Stroke 22 ms
Rotational Speed Rotational Speed Rotational Speed Rotational Speed 7,200 rpm
Logical Blocks Logical Blocks Logical Blocks Logical Blocks 156,301,488
Operating Temperature Operating Temperature Operating Temperature Operating Temperature 41° to 131° F (5° to 55° C)
3.5” 7200 RPM Serial 3.5” 7200 RPM Serial 3.5” 7200 RPM Serial 3.5” 7200 RPM Serial
ATA Hard Drives
ATA Hard Drives ATA Hard Drives ATA Hard Drives
500 GB 500 GB 500 GB 500 GB Capacity Capacity Capacity Capacity 500,107,862,016 bytes
Height Height Height Height 1 in (2.54 cm)
Width Width Width Width Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
Interface Interface Interface Interface Serial ATA (3.0 Gb/s)
Synchronous Transfer Rate Synchronous Transfer Rate Synchronous Transfer Rate Synchronous Transfer Rate
(Maximum) Up to 3 Gb/s
Buffer Buffer Buffer Buffer 16 MB
Seek Time Seek Time Seek Time Seek Time (typical reads,
includes controller
overhead, including
settling) Single Track Single Track Single Track Single Track 2.0 ms
Average Average Average Average 11 ms
Full-Stroke Full-Stroke Full-Stroke Full-Stroke 21 ms
Rotational Speed Rotational Speed Rotational Speed Rotational Speed 7,200 RPM
Logical Blocks Logical Blocks Logical Blocks Logical Blocks 976,773,168
Operating Temperature Operating Temperature Operating Temperature Operating Temperature 41° to 131° F (5° to 55° C)
250 GB 250 GB 250 GB 250 GB Capacity Capacity Capacity Capacity 250,059,350,016 bytes
Height Height Height Height 1 in (2.54 cm)
Width Width Width Width Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
Interface Interface Interface Interface Serial ATA (3.0 Gb/s)
Synchronous Transfer Rate Synchronous Transfer Rate Synchronous Transfer Rate Synchronous Transfer Rate
(Maximum) Up to 3 Gb/s
Buffer Buffer Buffer Buffer 8 MB
Seek Time Seek Time Seek Time Seek Time (typical reads,
includes controller
overhead, including
settling) Single Track Single Track Single Track Single Track 1.0 ms
Average Average Average Average 8.5 ms
Full-Stroke Full-Stroke Full-Stroke Full-Stroke 18 ms
Rotational Speed Rotational Speed Rotational Speed Rotational Speed 7,200 RPM
Logical Blocks Logical Blocks Logical Blocks Logical Blocks 488,397,168
Operating Temperature Operating Temperature Operating Temperature Operating Temperature 41° to 131° F (5° to 55° C)
160 GB 160 GB 160 GB 160 GB Capacity Capacity Capacity Capacity 160,041,885,696 bytes
Height Height Height Height 1 in (2.54 cm)
Width Width Width Width Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
QuickSpecs
HP Compaq dc7900 Business PC HP Compaq dc7900 Business PC HP Compaq dc7900 Business PC HP Compaq dc7900 Business PC
Technical Specifications - Hard Drives
DA - 13029 North America — Version 15 — March 30, 2009 Page 39