Hitachi G400 Hardware Reference Manual page 75

State Controller
Notes:
1. The system's internal temperature controls the rotating speed of the fan module.
Therefore, this standard value might be exceeded if the maximum load continues
under high-temperature environment or if a failure occurs in the system.
2. Sound pressure level (LA) changes from 66 dB or 75 dB, according to the ambient
temperature, drive configuration, and operating status. Maximum volume can reach 79
dB during maintenance procedure for a failed ENC or power supply.
3. Acoustic power level (LwA) measured by the ISO 7779 standard is 7.2 B. This value
changes from 7.2 B to 8.1 B, according to the ambient temperature, drive
configuration, and operating status.
4. When accessing the dense intermix drive tray, do not work for long times at the rear of
the rack.
State Controller
Opera 60 dB (Environmental temperature
1
ting 32°C or less)
Non- 55 dB (Environmental temperature 32°C or less)
operat
ing
Notes:
1. The system's internal temperature controls the rotating speed of the fan module.
Therefore, this standard value might be exceeded if the maximum load continues
under high-temperature environment or if a failure occurs in the system.
2. Sound pressure level (LA) changes from 66 dB or 75 dB, according to the ambient
temperature, drive configuration, and operating status. Maximum volume can reach 79
dB during maintenance procedure for a failed ENC or power supply.
3. Acoustic power level (LwA) measured by the ISO 7779 standard is 7.2 B. This value
changes from 7.2 B to 8.1 B, according to the ambient temperature, drive
configuration, and operating status.
Appendix C: Environmental specifications for VSP G400, G600
Hitachi Virtual Storage Platform G400, G600 Hardware Reference Guide
Environmental specifications
SFF, LFF Dense intermix drive tray
FMD
60 dB (Environmental temperature 32°C or
1 2 3
less) , ,
(When accessing the dense intermix drive
tray, do not work for long times at the rear of
the rack.)
1 2 3 4
, , , 55 dB
75