VIP and Pool Differnt Subnets

Steve --

 

 

Why do you say (above) that it is normally the case that virtual servers and pool members are in different subnets? We typically put them in the same subnet, and I'm researching this question mainly because we need to create a fairly large number of new virtual servers pointing to existing servers, but the subnet the servers are in is almost full. Routing is not an issue since the F5 does have a presence (Self IP) on both subnets. Is there some reason to make a point of putting them in different subnets?

 

 

Thanks.