Western Digital WDE2170 - Manual (Page 25)

WD Enterprise WDE2170/WDE4360 Specifications
4079-001045 Rev. B RELEASED 04-08-97 17
2.5.4. Atmospheric Pressure
Table 2-13. Allowable Altitude Ranges
Altitude
Operating -1,000 feet to 10,000 feet (-300m to 3,000m)
Non-operating -1,000 feet to 40,000 feet (-300m to 12,000m)
2.5.5. Acoustics
Table 2-14. Sound Power Level
Mode Typical Maximum
Idle 4.0 A-weighted Bels 4.3 A-weighted Bels
Seek 5.0 A-weighted Bels 5.3 A-weighted Bels
Notes:
1. Sound power is measured in accordance with ECMA-74 and ISO 7779.
Seek mode sound power is measured while the drive performs random
seeks at a rate of 33 seeks/sec.
2. Drives are tested after a 20 minute warm up period.