hi, there seems mixed opinions on whether to virtualise server 2019 for a migration or use new physical hardware. we have a new dell server with 2019 ready for the migration as most of the opinions seem to suggest this is the more stable route - especially when the server is also a heavy duty file server, 10gb fibre connection, dhcp, dns server, vpn, remote access, firewall and a few other services. any advice or opinions on this would be appreciated before we proceed with the migration guide...
I always virtualize everything. In most smaller networks one DC is enough and together with another VM that runs Exchange. There are a ton of options you can set to optimize and tune your Hyper-V host. How many users do you have?
65 users, and we were planning a backup dc for the very few times the main dc is down for whatever reason, using the old hardware. exchange has now all moved to the cloud at office 365. so you would put the dc on hyper v on the new hardware server 2019 using the additional licence provided to do this. ie. 2019 running in 2019 hyper v. doesn't that effectively double the chances of downtime as either server or hyper v has a problem? also half resouces and possibly speed?
If you have so much trouble with business continuity you should consider a second Hyper-V host and replicate. That would obviously double the cost but that probably ways out the loss of production.
You mention that you are going to install a second on the old hardware. What good does it do if the Hyper-V is down with your files and LOB applications? What good does it do when a fire breaks out in the building where your infrastructure is located? Nothing. If you are in need of redundancy you need to have another Hyper-V host in another building or site that replicates everything.
Make sure you do the backups of your infrastructure and keep your backups in a remote location or use the cloud for this.
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