Change of IP Address Range and Subnet

[foofighterjim]

We are moving ISPs at Easter and we will finally be able to set our own IP schema. We are currently on a /22 network (dictated to us) but was thinking of changing this to /20 (to allow us room to VLAN over the summer), this is not a problem in terms of the switches and clients. Where I am struggling is the server side of things, here is a brief rundown of what we have:

 

2 x ESX Hosts

1 x SAN

2 x DCs (Virtual)

1 x Member server (Virtual)

1 x vCenter (Virtual)

1 x vSphere Management Assistant (Virtual)

1 x Citrix Terminal Server (Virtual)

1 x Virtual CAG

 

I have no idea what order I need to change the above or how best to do it. If these were all physical there would be no problem but for example if I change the SAN IP and subnet first none of the virtual servers would be able start(?). Any advice on this one would be appreciated.

[john]

Is your VCentre server hosted on the same cluster as your vmware.....

[foofighterjim]

Is your VCentre server hosted on the same cluster as your vmware.....

 

Yes, everything is in the same cluster.

[foofighterjim]

[john]

Uum not 100% sure your going to have some messing as you have the virtual vCentre

 

Shut everything down first completely in terms of VMs I'd say and then look to re-IP the VMware hosts and other physical boxes along with your switches, gateway etc... and then you will probably have to laptop and get into the storage and sort it out and then you can put its IPs for the initiators into vmware and go from that point. and then start to get the VMs re-turned back on and go from that point.

[curtis_fink]

You might be able to have them temporarily pull DHCP addresses until they'er all on the new network, and then switch them back to static.