I saw in the 5.5 release notes that there were a few Edge appliance changes, such as the X-Large now being 4 vCPU, 8gb of RAM, and now a "Quad Large" that is stated to provide "additional throughput over other form factors". I deployed one, and it seems to just be a 4vCPU and 1gb of RAM offering. While our findings in large system deployments have found us wanting in CPU only (with no need for more than 1gb of RAM), am I missing some advanced features or anything that this provides? Why didn't VMware call this an "X-large" and move the 4cpu/8gb RAM offering to be the "Quad large"?
Just curious before we go and start deploying this for clients (since the 4CPU and 8gb of RAM is largely a waste of 7gb of RAM in our cases).
The order of sizing assumes that you're using all of the features of the Edge (LB, VPN, FW, Routing), and scales pretty linearly:
Compact = 1 vCPU / 512 MB
Large = 2 vCPU / 1024 MB
X-Large = 6 vCPU / 8192 MB
The sizing of the X-Large assumes that you're doing a lot of L7 load balancing. Quad Large is its own special thing that falls outside the normal order. The idea is that it is the same as a Large in most respects, but augmented with 2 additional vCPUs for additional throughput for straight forwarding and firewalling without a lot of L7 load balancing going on. It was a common enough use case that they added it in.