I doubt there is a single answer, it all depends on where your data center is located.
Look at power grid, telecom, flood plain, tornado/hurricane paths, fault lines, transportation, etc. Your idea of staying far enough away to ensure relative safety from a regional issue sounds about right. Building your own DR datacenter might have different requirements than a contracted DR site (e.g. if I use Sungard I can theoretically recover at any of their sites so having the primary site close by might not be that big of an issue). -----Original Message----- Lizette Koehler Listers - Poll question of the day: How one goes about determining a good "distance" between 2 data centers. One which is primary and one which could be used as a DR site. Is there any papers, manuals, redbooks that give a good ROT for this topic? And what is your feelings on this issue. Is 4 miles between two data centers too close? is 1000000 miles between two data centers to far? Any thoughts or a pundit's 2cents worth on this? I have been trying to determine this in a generic way. Not based on what we have for connectivity. But what would be a good business case to show upper management that if we had XX miles between our data centers, then a regional issue would not take out our business. But if we were only 4 miles apart, we would be in a world of hurt. Thanks for your input Lizette ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
