HP DC7900 - Manual (Page 40)

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 0.9 ms
Average Average Average Average 9.3 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 312,581,808
Operating Temperature Operating Temperature Operating Temperature Operating Temperature 41° to 131° F (5° to 55° C)
80 GB 80 GB 80 GB 80 GB Capacity Capacity Capacity Capacity 80,026,361,856 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 2.0 ms
Average Average Average Average 9.3 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 156,301,488
Operating Temperature Operating Temperature Operating Temperature Operating Temperature 41° to 131° F (5° to 55° C)
10,000 RPM Serial ATA 10,000 RPM Serial ATA 10,000 RPM Serial ATA 10,000 RPM Serial ATA
Hard Drives
Hard Drives Hard Drives Hard Drives
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: 3.0 in (7.62 cm)
Physical size: 4 in (10.2 cm)
Interface Interface Interface Interface Serial ATA (1.5 Gb/s), Native Command Queuing
enabled
Synchronous Transfer Synchronous Transfer Synchronous Transfer Synchronous Transfer
Rate
Rate Rate Rate (Maximum)
Up to 3.0 Gb/s
Cache Cache Cache Cache 16 Mbytes
Seek Time Seek Time Seek Time Seek Time (typical reads,
includes controller
overhead, including
settling) Single Track Single Track Single Track Single Track 0.3 ms
Average Average Average Average 4.6 ms
Full-Stroke Full-Stroke Full-Stroke Full-Stroke 10.2 ms
Rotational Speed Rotational Speed Rotational Speed Rotational Speed 10,000 RPM
Logical Blocks Logical Blocks Logical Blocks Logical Blocks 312,581,808
Operating Temperature Operating Temperature Operating Temperature Operating Temperature 41° to 131° F (5° to 55° C)
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 40