We will be deploying into an environment intended for maximum resilience/redundancy and the capability for rapid scalability.
This environment is:
- 1 x NAS server with FreeNAS RAID
- 2 x application host servers
- 1 x managed layer 2 switch
- 1 x firewall/router with 250Mb/s max WAN throughput
Both the NAS and the app servers are Citrix XenServer hosts, with the NAS holding the storage repositories and the app servers hosting the VMs. One of the main intentions for this is that, as we scale, we can introduce new hardware and repair or remove old hardware without interrupting the service by live-migrating between the app hosts (or the NAS for that matter, once we purchase additional units).
Having not performed live-migrations in a production environment before, my concern is for the layer 2 switch. Will the switch be able to handle the fact that some mac addresses are being routed through
port x one moment and
port y the next?
For reference, the specific switch is here: http://uk.tp-link.com/products/details/cat-39_TL-SG3424.html