Specification Value
Diameter 12 cm, 8 cm (4.70 in, 3.15 in)
Thickness 1.2 mm (0.05 in)
Track pitch 0.74 µm (3.15 × 10
-7
in) DVD-ROM
1.6 µm (6.3 × 10
-7
in) CD-ROM
Cache/buffer 128 KB
Startup time < 15 s
Stop time < 5 s (single); < 30 s (multisession)
Laser parameters
Type Semiconductor laser GaAs
Wave length 700 ± 25 nm
Divergence angle 53.5° ± 1.5°
Output power 0.14 mW
Operating conditions
Temperature 5°C to 55°C (41°F to 131°F)
Humidity 10% to 80%
SAS and SATA hard drive specifications
Item 36-GB SAS drive 72-GB SAS drive 60-GB SATA drive
Capacity 36,420 MB 73,408 MB 60,022 MB
Height 15 mm 15 mm 9 mm
Interface SAS SAS Serial ATA
Transfer rate 3 GB/sec 3 GB/sec 1.5 GB/sec
Rotational
speed
10,000 rpm 10,000 rpm 5,400 rpm
Bytes per sector 512 512 512
Logical blocks 71,132,960 143,374,737 117,231,408
Operating
temperature
10°C to 35°C
(50°F to 95°F)
10°C to 35°C
(50°F to 95°F)
10°C to 35°C
(50°F to 95°F)
Specifications 85
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