Chris, you have 300 servers and 2 SANs, here is my recommended course of action.

1. Go and buy the book, VMware Infrastructure 3: Advanced Technical Design Guide and Advanced Operations Guide by Scott Herold, Ron Oglesby, Mike Laverick Review

2. Capacity and work load analysis. Find someone who can run a VMware Capacity Assessment for you against your 300 servers and ask for a spreadsheet dump of the data.

3. Create a candidate server worklist with transformed resource requirements. That is how many vCPU, how much RAM and new disk sizes and connected VLANs. Use the data from the CA to determine these based on load.

4. Based on your information work out your total number of VMs, total number of vCPUs and RAM.

5. Architect one or more VMware cluster based on your data and business requirements. Business requirements are things like existing hardware, vendor relationships, division of different workload types (prod, DMZ, dev, UAT), risk. There are many more inputs into architectural decisions ... but you get the drift. This should tell you how many hosts you need and how much resource each needs to deliver (number of cores and RAM).

6. Based on your number of hosts and needed resources pick a hardware platform, blade or server, required number of network ports, SAN connectivity considerations.

7. Based on your data perform a storage design, based on your data for sizes, performance.

8. Create a migration plan and test

9. Build and test your VMware environment, configure your monitoring

10. Migrate

11. Enjoy

There is probably more but I just did a brain dump.

Rodos

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