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Hmm I was going through this as well with a client. What I did was use the 7.15 handbook and the The TechZone 5 and 10 SSS. Also, I looks up what CPU is runnign on the Hypervisor for ring vs mesh. Which changes how vNuma is approached. https://docs.citrix.com/en-us/tech-zone/design/design-decisions/single-server-scalability.html

Cheers, Ray... I just send some feedback to the hardware procurement partner based on that article... found it earlier whilst trawling 🙂

The only really good way is to do a pilot with real images/apps limited to a single host to monitor load and responsiveness. Everything else is just guessing including what Nick talks sbout eith 5 and 10.

Vmware Horizon has one that I use at time to help me get a good idea. Not fool proof, but it helps.

Typically any decent vendor would have a sizer where you can punch in numbers to get a very generic idea, otherwise it’s what @Rob Zylowski said

what I’m seeing is that no matter how much resources you throw at server OS published desktop, you’re not likely to get more than 15 users on it before the experience becomes awful, especially if they are using chrome

Last time I achieved 40 users was on 2012R2 running a light weight app. Since then, I have experienced the same results you have mentioned.

Single session VDI depends on what you’re doing but the bare minimum is 3vcpu and 16 gig of ram, if you go lower on the CPU or RAM the performance suffers a lot, mainly due to chrome again

If you even open chrome/edge it starts at almost 700MBish +. Crazy how much resources it needs. Even if you slap WEM on it and limit what it can use, then users will get crap results.

Thanks, lads. Ive shared some estimates and links and stressed if they want something accurate they will need to load test etc, cheers