Here’s a short post without the usual rubbish I write. Imagine that! Well, my dinner is nearly ready, it’s a Friday, I’ve got 4 cold beers in the fridge and the daughter is trying to eat crayons.
I’ll be brief.
I’m part way through designing an infrastructure for a new customer who is looking to replace 39 IBM hosts and a whole mess of SANs and associated fabric. In total they need five racks to put it all together while consuming 120TB of usable storage. It’s an old environment and is ready for the future.
For legacy reasons they split their environment into three separate ESX clusters; one for the DMZ, one for SQL and one for the remaining production VMs.
Ignoring requirements for DR for a moment here’s what I need to put all that together and for your viewing pleasure I’m going to show you the output of our new sizing tool that we at Nutanix and our partners use to figure out what fits best.
Remember we have 5 racks filled with crap to take out.
To keep with with the separation the customer wants I’ve done three designs but they can all be part of the same cluster and will all fit into a single rack too.
Below you can see the specs of each cluster and the amount of VMs each one needs to support. I’ve included the rack size just for giggles 🙂
Main VMware Cluster
SQL VMware Cluster
DMZ VMware Cluster
So there you go. 5 racks down to 20U.
I’ll add some more notes to this about the various models and you can probably tell the the first cluster is using our new compute-lite 6035-C KVM nodes to bump up the total amount of storage. We’re doing this because they need far more storage than compute and to add more nodes just wouldn’t make commercial sense. But that’s the beauty of Nutanix, you just add what you need.
Anyway dinner and beer is calling. Enjoy and stop buying SANs, for your own sake.