We are in the early stages of doing an 'upgrade' and we have been told that this means the serial number does not change (obviously the model number does). An 'upgrade' is much cheaper allegedly.
Same serial number CPCs must apparently never see each other so I've set up a VLAN on the HMCLAN just for this new CPC and it's HMC. We've put one of the new HMCs on the prod LAN and one on the segregated LAN. We'll switch them both to the prod LAN when the old CPC is disconnected. Also your existing HMCs (if you keep any) may not be able to see the new CPC without a software upgrade which their hardware may not be able to support. The new HMCs will see the old CPCs (if you have any) without issue (once on the same LAN). Some software checks the model number when doing a serial number check so even when the serial number stays the same they will need a new code. We plan to test the new box and then change over to it in its entirety in one go. We have a few spare ports on our Ficon Directors but nowhere near enough to connect new and old in their entirety so I'm connecting a few CHPIDs up front to give access and then moving the rest over during the changeover. They'll already all be in the IO defs everywhere as I'll change the port address (old to new) on the Ficon Director as I swap the cables. Regards, Alan Watthey -----Original Message----- From: Ward, Mike S [mailto:[email protected]] Sent: 26 February 2018 7:28 pm Subject: Re: Hardware upgrade z13 to z14....Yikes What also comes to mind, if you have 3rd party software make sure to contact them about the new CPU. Even if it's a 1 to 1 swap they may want to charge an upgrade fee. You also have a new CPU serial number so make sure any 3rd party software that requires a specific cpu serial number is updated. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
