Rough costs to Implement SAN
I'm in the process of putting my budget request in for next year (Sept '13 - Aug '14), and in my 5 year plan I wanted to implement a SAN solution of some sort during Summer 2014. My reasoning that I have three XenServers that are all local storage based will be 5yrs old from 2014, 2015 & 2016 respectively (each is housing 4 servers with one being the main storage server for user home directories). The reasoning being that I replace the first XenServer next year at the same time as introducing a SAN device. This can then also be used for storage of the subsequent replacements in the following years. Storage being based on the SAN thus helping reducing the costs of needed on the new servers and they won't need local storage (apart from the boot device).
I know it's a bit like saying how long is a piece of string as how much storage do I need? But I just want an indication of how much it would cost approximately so I can fill out my spreadsheet with a rough cost. I'm not totally gen'd up on SAN systems as we've just been happy with Local Storage (and this may still be the way to go for us), but would welcome any feedback, experiences, advice, etc, etc.
Again, thanks in advance all.