NEC PowerMate Enterprise, Руководство пользователя

Страница: 58 / 275

Technical Information 1-41
Table 1-25 4.5-GB Quantum Viking Ultra Wide SCSI-3 Hard Disk Drive
Specifications
Feature Specification
Hard Disk Drive 4.5-GB Quantum Viking VK45W012-04-G
Physical Configuration
Formatted Capacity
Nominal Rotational Speed
Number of Disks
Data Surfaces
Number of R/W Heads 4557 MB
7200 rpm
4
8
8
Data Organization Track density: 6432
Areal density: 849 Mbits/in.
2
Sectors per Track Bytes per sector: 512
Performance Seek times
Track-to-track: 1.0 ms typical
Average read/write: 8 ms typical; 9 ms max.
Average latency: 4.17 ms
Data transfer rate
Buffer to disk: 139 Mb/sec.(burst)
Buffer to host: 40 Mb/sec.
Interleave: 1:1
Buffer Size 512 KB
Power +5Vdc
+12Vdc
Temperature (non-condensing)
Operating: 0
°
to 55
°
C (41
°
to 131
°
F)
Non-operating: -40
°
to 75
°
C (-40
°
to 149
°
F)
Humidity (non-condensing) Operating: 5% to 85% rh
Non-operating: 5% to 95% rh
Altitude Operating: -305 m to 3,050 m (-1000 to 10,000 ft.)
Non-operating: -305 m to 12,200 m (-1000 to 40,000 ft.)
Dimensions Height: 1.0 inches (25.4 mm)
Length: 5.75 inches (141.6 mm)
Width: 4.00 inches (101.6 mm)