My personal adventures in the quest for virtual perfectness.
This is just a very little tip for today: fill your blade chassis vertical, instead of horizontal. Here is a little illustration:
On the left we fill a chassis from left to right, top to bottom. On the right we fill the chassis from top to bottom, left to right and for full height blades, we start filling from the right.
This is really a 'duh' moment, however - the customer didn't realize they would ever use full height blades. But the need for more memory in physical hardware made the move to full height blades. Since the chassis was filled like the first scenario, they needed to move some blades to make full height slots available. Luckily for us: we've got VMware, putting a host in maintenance mode and move it. But this could have been prevented...