Is it safe to disable the HDD fan completely on iMac 2007 after putting an SSD?

[squarus]

There are 3 fans on my iMac (20 inch mid 2007), one for cpu and gpu, one for hdd and one for the disc drive. The hdd fan is a little bit noisy and I was wondering if it's safe to just unplug the cable or something else to completely disable the fan? Or does it cool other parts of the system too?

EDIT: I ended up unplugging the HDD fan. Everything is fine, PSU is slightly warmer but temps are still safe enough.

 

[ScreenSavers]

There are 3 fans on my iMac (20 inch mid 2007), one for cpu and gpu, one for hdd and one for the disc drive. The hdd fan is a little bit noisy and I was wondering if it's safe to just unplug the cable or something else to completely disable the fan? Or does it cool other parts of the system too?

I like to turn it down to a safe level without hearing it. (Macs fan control) I usually set it on a constant value of about 1200RPM. On a 2007, the HDD fan probably doesn't do anything but the HDD, but extra cooling is always safe.

 

[squarus]

I usually set it on a constant value of about 1200RPM.

That's the problem, every single fan is running at bare minimum speed now and HDD fan still makes this weird hissing noise. While I think cleaning the fan would probably fix the issue, it would take a complete logic board disassembly to do it since HDD fan is hidden deep under everything.

 

[circatee]

Hmm, I would leave it. Plus, I wonder if you did turn it off, it you would get hardware errors, or beeps, due to the system board not finding the fan...

 

[junkw]

i would disable it