What is the value/cost of enabling "spread spectrum clocking" on my hard drives?
- by Stu Thompson
I'm building up a biggish NAS box (10x WD RE4 2TB SATA RAID10) and ran into some problems. During the course of my research, debugging, investigations, etc, I discovered a jumper on the physical drives labeled "spread spectrum clocking".
After some googling about this on teh internets, it seems to be a feature that some suggest (without reference or explanation) enabling in 'a storage configuration' that makes the drive less sussesptable to EMI.
But why? I've got three core questions:
Why is this feature not enabled by default?
What are the actual benefits?
Are there any costs?