Poor disk performance with high disk capacity usage

Posted by GoldenNewby on Server Fault See other posts from Server Fault or by GoldenNewby
Published on 2012-11-26T22:41:11Z Indexed on 2012/11/26 23:06 UTC
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Performance

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disks

I've heard numerous times in the web hosting industry that using "too much" disk space on a drive is bad for performance. Is this just a myth? Can someone explain why this is an issue, even in a situation where the amount of IO done to the drive would be the same at 10% as it would be at 90%?

I'm especially curious in the case of virtual servers. If I set up 10 Logical volumes as the virtual disks for some VMs, is it going to run better if I "waste" 20% of the disk space?

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