As far as calculating overall downtime (hmmm, five 9s - 99.999 - means about six minutes of downtime a year, but the server comes down for half an hour once a week to get patched, or about 26 hours a year. Anything wrong with MS advertising at the moment?)
I would present two numbers uptime/(overall time - scheduled outages) and uptime/(overall time), both based on service availability. So, if a service is clustered, or in some round robin configuration, and no disruption is discernible to the end-user for scheduled or unscheduled downtime - then I wouldn't count it. In the case of services where redundancy allows you to upgrade without user interruption, I would present a third number and fourth set of numbers based on how often you were running with full redundancy, i.e. (Time at Full Redundancy)/(Overall Time - Scheduled Maintenance Time) and (Time at Full redundancy)/Overall Time. I'd put the adjusted numbers up front presenting the time used for maintenance with those numbers and bury the overall numbers so they're there if someone is looking, but not apparent in an executive summary. ----Original Message Follows---- From: "David N. Precht" <[EMAIL PROTECTED]> Reply-To: "MSWinNT Discussions" <[EMAIL PROTECTED]> To: "MSWinNT Discussions" <[EMAIL PROTECTED]> Subject: RE: Maintenance and planned downtime Date: Wed, 10 Oct 2001 23:04:09 -0400 or Code Red... Come on , Intel got wacked with it ! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Martin Blackstone Sent: Wednesday, October 10, 2001 22:56 To: MSWinNT Discussions Subject: RE: Maintenance and planned downtime When it has been planned and announced and I show up and someone says wait, my response is "sure, ill give you a couple of minutes to shut down" and that is it. As for management and in particular with the current state of weekly patches from MS, downtime is not an option, it is a necessity. Management may not like it, but they really have no choice. Feel free to point out the thousands of companies that had to shut down for days after Nimda to rebuild their network. Besides, this is not really something management needs to be involved in. Of course they don't like it, but they have no choice. It is a simple fact of life and everyone needs to get on board or get wrecked. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Chandrasekhar Varma Sent: Wednesday, October 10, 2001 7:38 PM To: MSWinNT Discussions Subject: Maintenance and planned downtime Hi, How do you guys rollout packages & fixes that require reboot. We normally do that in the weekend and send out a mail to the staff giving them a time frame in which their systems might be rebooted. But many a times we found people still working and asking us to wait. We are planning on talking to the management team convincing them to give us a dedicated a time when we can roll out packages / fixes, without sending a mail ( we would of course send a net send). Would this effect the downtime of the site. How do you calculate the site downtime? If we have to do that what other things can we use to drive across our point to the mgmt team. Any help would be much appreciated. Thanks Chandrasekhar Varma This message is confidential and may also be legally privileged. If you are not the intended recipient, please notify us immediately. You should not copy it or use it for any purpose, nor disclose it's contents to any other person. The views and opinions expressed in this e-mail message are the author's own and may not reflect the views and opinions of Wilco International. ------ You are subscribed as [EMAIL PROTECTED] Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe send a blank email to [EMAIL PROTECTED] ------ You are subscribed as [EMAIL PROTECTED] Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe send a blank email to [EMAIL PROTECTED] _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com ------ You are subscribed as [EMAIL PROTECTED] Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe send a blank email to [EMAIL PROTECTED] _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp ------ You are subscribed as [email protected] Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe send a blank email to [EMAIL PROTECTED]
