Yea the default works but how is it Plain Wrong? If it was flat out wrong then Upstream would not allow it. Raid 1 disk array with one hot spare on a hardware raid controller under a SAN server is what you saying is wrong? Case is, the array is not using /home or /var; were only exporting nfs luns direct attached. What on earth and why would I want to have another drive for /var &/home in this case. I'm just asking but not arguing. There are cases where it works exceptionally. In fact my opinion is it works nice for newbies, untill they gets a lil experience.
I'd still want a separate partition for /var for the SAN configuration. I've seen more then one machine brought to it's knees by overflowing log entries.