Re: FW: Distance between primary and DR site
Howard Brazee wrote: Computerworld July 16 had an article about a State of Tennessee data center built on top of a landfill and below the largest US reservoir east of the Mississippi - held by an unsafe dam. Parts of the center are sinking. Use your brain and do your homework in setting your data center sites. That's obvious example of bad planning. However sometimes you can get similar (bad) results without so spectacular mistakes. I.e. You built up your centre, and then neighbouring factory is sold, and new owner plans to make a big gas factory. You cannot forbid new owner to do that. However now disaster risk is much higher than it was. That's *real* example. -- Radoslaw Skorupka Lodz, Poland -- BRE Bank SA ul. Senatorska 18 00-950 Warszawa www.brebank.pl Sd Rejonowy dla m. st. Warszawy XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, nr rejestru przedsibiorców KRS 025237 NIP: 526-021-50-88 Wedug stanu na dzie 01.01.2007 r. kapita zakadowy BRE Banku SA (w caoci opacony) wynosi 118.064.140 z. W zwizku z realizacj warunkowego podwyszenia kapitau zakadowego, na podstawie uchwa XVI WZ z dnia 21.05.2003 r., kapita zakadowy BRE Banku SA moe ulec podwyszeniu do kwoty 118.760.528 z. Akcje w podwyszonym kapitale zakadowym bd w caoci opacone. -- 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
Re: FW: Distance between primary and DR site
Computerworld July 16 had an article about a State of Tennessee data center built on top of a landfill and below the largest US reservoir east of the Mississippi - held by an unsafe dam. Parts of the center are sinking. Unbelievable. Almost. So in sum: The state located its data center on top of unstable, jiggly ground near a railroad and in a floodplain. http://www.computerworld.com/action/article.do?command=viewArticleBasicarticleId=9026842 - or - http://tinyurl.com/3bdof4 -- 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
Re: FW: Distance between primary and DR site
Computerworld July 16 had an article about a State of Tennessee data center built on top of a landfill and below the largest US reservoir east of the Mississippi - held by an unsafe dam. Parts of the center are sinking. Use your brain and do your homework in setting your data center sites. -- 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
FW: Distance between primary and DR site
-Original Message- From: David Boyes Sent: Fri 8/3/2007 6:00 AM To: [EMAIL PROTECTED] Cc: David Boyes Subject: Distance between primary and DR site If you can't afford (or your bosses are too cheap) to do a full risk study, I use what I call the Greek Elements model: Consider the classical Greek elements: Earth, Air, Fire, and Water, plus the modern element, plasma. A good general ROT is that your DR site should be no closer than 2.5 times the diameter of the largest possible disaster that could occur in the area. If there are earth problems (quakes, slides, etc), your backup center should be at least 2.5 times the distance from the center of the last major problem. If there are wind problems (high winds, tornados, etc), you should be at least 2.5 times the diameter of the largest storm destruction area recorded. If there are fire problems in the area, you should be at least 2.5 times the distance of the diameter of the largest fire recorded in the area. If there was water nearby, you should be at least 2.5 times the width of the body of water. To avoid nuclear burst areas (the plasma element), assume 100 mile burst radius, and apply the 2.5 rule. If there are multiple hazards, the rule applied should reflect the largest hazard. Example: if the area gets hurricanes with storm tracks of 100 miles in diameter, your DR center should be no closer than 250 miles away. If your area gets tornadoes with 10 mile destruction paths, your DR center should be no closer than 25 miles away. If there is a dam on a lake 5 miles away, your DR center should be no closer than 12 miles away. Never failed me yet. (I really liked the at least 50 megatons distance response...) -- 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
