After looking at some comments around Exchange Hosted Services, I thought I might do a quick (and very dirty) comparison between that and Google for 10,000 users. (This is no way reflects on the three options and may not resemble your reality).
MS Exchange Hosted Services would cost US$90k/month for company with 10k email users and selecting roughly half the options available (Communicator and Hosted Archive being two). That sounds really pricey vs local in-house servers and admins? I have no specific Exchange knowledge but say 20 servers across 5 virtual hosts, plus storage and backups is roughly NZ$350-400k as a one-off cost. Plus a team of seven admins to run it @ NZ$80k pa each is a five year cost of around $2.8 million, but lets say $3.2M to round it up to include a few software licenses and some power,cooling and floor space.
Google’s offering that I compared MS against is their Premier Edition of Apps. It’s US$50 per user per year and offers the usual email, calendar, resource booking, etc much like Exchange. I was expecting a few missing features but was surprised to see BlackBerry Enterprise Server (BES) synching and user and group provisioning APIs. It integrates with LDAP and offers Single Sign-On (SSO) so most of your users won’t see too much of a change – especially if they keep on using the Outlook client. The main issue for some businesses may be the 99.9% uptime guarantee – that’s 8h 45m down time per year. I’m sure there are a few features that Exchange holds over Apps but in many situations the cost may outweigh the benefit or it’s just not needed. Using Google Apps also unties you from MS Outlook and possibly MS Office, so this option may open the door to other savings.
So over 5 years for the 10k user company we have the following options:
In-house MS Exchange with 20 VMs, storage and 7 admins = NZ$3.2M
MS Exchange Hosted Services with a mid-tier option seclection @ US$90k/month = NZ$7.4M (at today’s exch rate of 0.72)
Google Apps Premier Edition @ US$50 per user per year = NZ$3.5M
Now one stands out there and not for a particularly good reason. The MS EHS option does include Communicator and Hosted Archiving as an option but I don’t see the extra value over staying with what you have or sending it all to Google. Add to both the off-site options, the project costs of actually implementing this and your own Exchange would have to be in a bad way or have some serious pain to go either way.
What are your thoughts on this one? Are my locally run Exchange costs way off for 10k users and are there any NZ based companies of a similar size (NZ Post’s 2100 users are on the way to Google Apps) that have taken either remote option? Is Google half the service or twice the value of the MS offering?
My last thought would be – just how reliable is that internet connection of yours?