However, your business must have a virtual private network (VPN) or some type of remote system access such as Webmail in order for employees to be able to access data remotely. It's also essential that your most critical systems are able to failover outside your building(s) or to another third-party data center in the event they're affected so your staff can still connect to them. Also, a well thought out communications plan among employees and managers is likely going to be needed. Remember to sit down with key people from IT, business operations, and HR and think through various scenarios. You'll likely never be able to have everything in place for every possible disaster recovery (DR) situation, but at least having some semblance of a contingency plan will put you ahead of the curve.
This was first published in May 2010