We've got several Nexus 7Ks all running dual SUP1s and 8GBs of memory and we plan to update from 5.2.9 to 6.2.10 which will require two upgrades. I am trying to get a rough idea on how long one of the upgrades will take; assuming no VPCs, fabric path...

I am a student so bear with me! Is it possible to set up an ACL that would, for example, block all remote access attempts from midnight to 4am?