I quite often run into grown vSphere installations with local disk only. Now naturally people want/need to move to centralized storage for which I'd like to do proper IOPS/throughput sizing. The datastore statistics are all available within vCenter - they are fragmented though (datastore-by-datastore).
Anyone aware of an existing tool that grabs these stats and produces aggregated, time-dependent metrics? I'm thinking about averages, max, min, and a frequency distribution or binning for read/write IOPS, read/write latency, and read/write throughput. All based on a selected timeframe (day, week, month) and a list of datastores that one is interested in.
Sounds super-helpful and I feel that something like this should exist on the market, but I am not aware of anything.
P.S.: I'm specifically looking for a pre-existing tool, not for a go-spend-some-time and DIY with Powershell approach.
EDIT: Such a tool would also be helpful for existing, centralized storage vSphere infrastructures where the storage system(s) don't provide the relevant stats in an accessible or useful manner.
