Spread Spectrum Clocking / Power Management - Enable or Disable?

I am building three Windows 2003 Servers.  Each has an Intel Server Board 7520AF2, an Intel SRCS16 RAID controller, and (6) Western Digital Raptor 74GB hard drives.  The hard drives will be installed in a hot swap drive cage and connected to the RAID controller.  

Should I enable or disable spread spectrum clocking on each of the hard drives?

Should I enable or disable powermanagement on each of the hard drives?
HillymanAsked:
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danishtahirConnect With a Mentor Commented:
Its upto you, you can turn both on.

"Spread Spectrum" is used to reduce EMI in SATA drives. Leaving them disables will not impact their performance unless there is lot of EMI.

"Power Management" will allow them to go into sleep mode.

If you get issues with computer not comming out of sleep mode / hybernation, then turn off "Power Management".
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_Connect With a Mentor Commented:
I will second that. Your call.

FWIW: I leave both of mine OFF. But that is me.   : )

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Aland CoonsConnect With a Mentor Systems EngineerCommented:
For stability it is best to disable power management on server.

Spread Spectrum should not effect performance or reliability.
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_Commented:
Thank you much.    : )
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