Scott, Even if you move all of the boards from one box to the other in the same slots, there is one gotcha to look out for. The addresses of primary boot path (disk boot) and the alternate boot path (tape boot) are saved on the processor. Before beginning be sure to record the address of your ldev 1 so you will know what path to use. I would be sure to keep a printed system configuration listing on hand too. Doug. Doug Werth Beechglen Development Inc. [log in to unmask] Cincinnati, Ohio ----- Original Message ----- From: "Scott Root" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, April 27, 2000 6:46 AM Subject: Re: 3Kupgrade HEHEHE! This list is great, you people are a riot! Actually my hardware support (non-HP) guy will be doing the swap (with my nose in his business the whole time) and I'm taking the system from the users on a Friday morn to allow a recovery buffer if needed (users don't work weekends). My biggest concern was any CPU configuration and hardware specific variables. Is !HPSUSAN a hardware specific variable? What's it used for and how does it get it's value? Scott "Quickly Losing My Virginity" Root