-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Rajagopal Swaminathan Sent: Thursday, March 24, 2011 14:49 To: CentOS mailing list Subject: [CentOS] {OT] Re: Installing IMA (Integrity Measurement Architecture) on CentOS 5.5
Greetings,
Having said that, I have this troubling thought for last decade: What exactly is high availability: is it 24/7 power on time? or is ti "when needed". Please not it am not talking about the maybe arrogant "on demand" attitude of a human.
You probably don't want it to be your only reference, but in my opinion Wikipedia has a pretty good first pass definition of high availability [1] means between you and your boss, i.e., "...a prearranged level of operational performance will be met during a contractual measurement period."
This under extreme circumstances in India like 4 hours of (Electrical Power Load Shedding) outage every day
So have you and your boss prearranged a "level of operational performance will be met during a contractual measurement period"? Something like: The system will be available to the users in the building 90% of the time when the local power grid is powered up?