We have not discussed this point, but I'm assuming it's off the table due to cost. And yes, this is for 24x7 rotations where everyone is in the same timezone...
This is a series of posts that have pretty sane defaults; I personally would not do a daily rotation, but rather rotations of 5 days, and alternating weekends (one guy does M-F, one guy does Sat/Sund) and you switch off.
http://blog.pagerduty.com/2011/03/on-call-best-practices-par...
This is a series of posts that have pretty sane defaults; I personally would not do a daily rotation, but rather rotations of 5 days, and alternating weekends (one guy does M-F, one guy does Sat/Sund) and you switch off.