Quantum 10K II - Manual (Page 65)

Specifications
4-10 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives
4.6 ACOUSTICS
Table 4-6 specifies the acoustical characteristics of the Quantum Atlas 10K II Ultra
160/m SCSI hard disk drive. Acoustic measurements are taken in an anechoic
chamber with background noise <25 dBA.
Table 4-6 Acoustical Characteristics
Acoustic Emissions (Typ / Max)
9.2 GB 18.4 GB 36.7 GB 73.4 GB
Typical
Active (ECMA Seeking)
Idle
4.4 / 4.7 dB
3.9 / 4.2 dB
4.4 / 4.7 dB
3.9 / 4.2 dB
4.4 / 4.7 dB
3.9 / 4.2 dB
4.9 / 5.2 dB
4.3 / 4.6 dB
NOTE
ECMA Seek Rate is defined in ECMA standard 74. It corresponds to 52
random seeks per second.
4.7 MECHANICAL
Dimensions 9.1 GB 18.4 GB 36.7 GB 73.4 GB
Height (in / mm) (3-sigma) 1.0 inch /
25.72 mm ± 0.24 1.0 inch /
25.72 mm ± 0.24 1.0 inch /
25.72 mm ± 0.24 1.64 inch /
41.6 mm ± 0.24
Width (in / mm) 4.0 inch /
101.6 mm ± 0.25 4.0 inch /
101.6 mm ± 0.25 4.0 inch /
101.6 mm ± 0.25 4.0 inch /
101.6 mm ± 0.25
Length (in / mm) 5.75 inch /
146.5 mm ± 0.25 5.75 inch /
146.5 mm ± 0.25 5.75 inch /
146.5 mm ± 0.25 5.75 inch /
146.5 mm ± 0.25
Weight (lbs / kg, nominal) 1.4 / 0.64 1.4 / 0.64 1.5 / 0.68 2.4 / 1.1
NOTE
All dimensions are exclusive of any optional faceplate (bezel).