6 acoustics, 7 mechanical – Quantum 10K II User 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

1.64 inch /
41.6 mm ± 0.24

Width (in / mm)

4.0 inch /
101.6 mm ± 0.25

Length (in / mm)

5.75 inch /
146.5 mm ± 0.25

Weight (lbs / kg, nominal)

1.4 / 0.64

1.5 / 0.68

2.4 / 1.1

NOTE

All dimensions are exclusive of any optional faceplate (bezel).