hi, i have an ongoing issue with slow write speeds to my array, i have finally diagnosed the issue to being thermal, if i bring my server in from the garage (temp currently at around 10C) and power it up in the house (temp around 20C) i have decent write speeds, if i power the unit up in the garage i have good write speeds for a short period before write speeds drop off again (assuming this is caused by the unit cooling down).

 

i have done this process twice to make sure im not going insane, and can confirm this is the case, i can also confirm it isnt related to the nic in the server (changed for intel pci-e) or source pc (used linux pc as well) , network cable (changed) , or switch (changed), so im 100% sure it is temperature related.

 

so my question is, has anybody experienced anything like this with the CX430 v2?, is this really a psu temp issue or could this be a mobo temp issue?.

 

its extremely weird, not seen any issues with LOW temp before.

hi, i have an ongoing issue with slow write speeds to my array, i have finally diagnosed the issue to being thermal, if i bring my server in from the garage (temp currently at around 10C) and power it up in the house (temp around 20C) i have decent write speeds, if i power the unit up in the garage i have good write speeds for a short period before write speeds drop off again (assuming this is caused by the unit cooling down).

 

i have done this process twice to make sure im not going insane, and can confirm this is the case, i can also confirm it isnt related to the nic in the server (changed for intel pci-e) or source pc (used linux pc as well) , network cable (changed) , or switch (changed), so im 100% sure it is temperature related.

 

so my question is, has anybody experienced anything like this with the CX430 v2?, is this really a psu temp issue or could this be a mobo temp issue?.

 

its extremely weird, not seen any issues with LOW temp before.

 

Check to see that all of your fans will start up when they are cold.  The CPU fan is one that you should definitely be looking at.

 

By the way, putting a working computer in a garage is not the best idea.  Especially if you are going to be shutting it down or even using 'sleep'.  Cold temperatures make lubricating fluids quite viscus and the motors can have problems both starting and getting things up to speed.  I once had a PS fan that screamed bloody murder for about ten ten minutes when the computer was turned on if the room temperature was about 55F (13C).  Once it warmed up, it quieted down and would run fine.

Thanks for the reply, I can confirm all fans are spinning fine i can also see fan speeds in unmenu cpu info. The server won't be shutdown or put into sleep so hopefully I shouldn't get any issues with startup. Do you think this is temp issue with psu or mobo?

 

edit - just to rule out any voltage issues i can confirm the voltage for vcore, 12v, 5v, and 3.3v are all steady when the server is outside or inside (information from unmenu cpu info acpi interface)

 

Just to close this issue with a result, it turned out to be the cold temperatures causing slow writes to the drives, this was consistent with all the drives in the server, fix was to turn off all case fans and turn off hd spin down to force the hd temp to rise, looks like about 20c is min temp,  very odd issue as most disks are rated down to freezing but that was the fix