FE typically means Front End (connections from the SAN array controllers to the switches or hosts) BE typically means Back End (connections from the SAN array controllers to the disk enclosures) I'm not sure what you mean with IO and KB (I know their typical meansing, but not sure how this would related to FE and BE).
I'm looking of definitions of FE and BE for both IO and KB.  The Storage Center documentation doesn't provide any. Thanks, rudif
definitions of BE and FE IO and KB