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).