Computer Freezes When Raid Array Powers Up
Posted 27 September 2011 - 11:26 AM
It's not the expander as it also does it if the drives are connected to the controller directly.
More than likely it could be the computer as the speakers buzz also, and they are not connected to the graphics card.
The latest firmware and drivers for everything in the computer are current.
Posted 27 September 2011 - 12:42 PM
Additionally, are you sure that is the speaker that "buzz" and not the PSU that "whines"?
Have a look at:
though "overall" a "grrenish" drive, has impressive needs at spin up:
8 of them spinning up simultaneously can bring to it's knees *any* average PSU.
The peak in itself can be as much as 8*(1.2*5+2.0*12)/0.9=266 W
Also, even if oversll the PSU can stand it as Watts, you need ot check tha actual Amperes the single "rails" (at 5 V and 12 V) can deliver.
Theoretically you need more than 8*1.2=9.6 A @ 5 V AND more than 8*2=16 A @ 12 V concurrently and besides the other needs of the PC, that if you have a fast GPPU card can be also demanding.....
P.S.: cross posting, if your drives are already staggered spinning up, then it is possible that the PSU is failing. Just try a new adequately rated PSU.
This post has been edited by jaclaz: 27 September 2011 - 12:45 PM
Posted 27 September 2011 - 01:00 PM
I will be back with a reply later.
Posted 27 September 2011 - 01:24 PM
Also as already said the psu might be having a hard time when the hard drives are waking up, but unless your hard drives have very short spin up sequence there will still be a small freeze when you try to access your raid array.
But i already warned you about this behavior.