I'm sorry if these questions have already been answered. I couldn't find anything.

 

In the WD documentation that is specific for the "EARS" drives, the use of a jumper on pins 3-4 is conspicuously missing. However, in other, more generic documentation, it say pins 3-4 are for PUIS but I don't know if that "generic" documentation has been superseded or not. I do know this works on the Caviar Black ("FALS") drives

 

So, my 1st question:

If I want my green "EARS" drives to power up in stand-by, do I need to jumper pins 3-4 or is this the default for the "EARS" drives (or is PUIS possible on the "EARS" drives)?

 

2nd question:

Is anyone using Spread Spectrum Clocking? My admittedly limited understand is that it either reduces the generation of EMI and/or reduces the effect of EMI and, theoretically, reduces the number of EMI-induced errors. I was wondering if anyone has tested whether or not it reduces error rates or increases/decreases overall speed in an unRAID configuration. On the surface it seems like it wouldn't hurt anything and if the mobo/controllers support it, why not turn it on? But, as I mentioned, my grasp of how SSC works and what it's for is limited so I don't know if my logic is sound.

 

Thanks

I don't know the answers to your questions, but I do know that all WD EARS drives require a jumper across pins 7-8 to work in unRAID.  I don't know if this jumper also affects the other features of the drive you are trying to use or not.  You may have to contact WD about that if no one here knows.

I probably should have mentioned that since the 7-8 jumpers are frequently talked about on the forum.

 

I do have 7-8 jumpers on the green drives.

You might want to edit the thread title too so that people don't just dismiss this as another 7-8 jumper thread.

Good advice.

Done.