Greetings,
I'm using psu from bladecenter and I wonder if theres a chance to manage eg. fans in this unit. After turning them on, they're spinning at max speed (after while) even when nothing is connected to the PSU. Air blowing from the back is cold. I have few questions about that:
1. Is there any way to manage fan speed (reduce it)?
2. PSU only connected to AC draws about 70W (fans turned off) from the wall - is it normal?
I'm using psu from bladecenter and I wonder if theres a chance to manage eg. fans in this unit. After turning them on, they're spinning at max speed (after while) even when nothing is connected to the PSU. Air blowing from the back is cold. I have few questions about that:
1. Is there any way to manage fan speed (reduce it)?
2. PSU only connected to AC draws about 70W (fans turned off) from the wall - is it normal?
1. No straightforward way to reduce fan speed. You can talk PMBus to the power supply and convince it it is in a healthy chassis or splice into the fan supply lines and control them that way, but no easy method that I'm aware of.
2. None of the IBM bladecenter supplies I have experience with are happy being plugged in but not running. Their standby consumption is high enough that internal components can easily overheat without the fans running. I've lost DPS-2000BB and DPS-2980AB supplies to this.