In this instance you really want data security, rather than high availability. HA in this situation creates way more scope for failure, and way more scope for data loss.
I used to look after the tech side of a datacentre in the UK. We had two very large and very expensive UPSes. Our local utility power was pretty reliable. We had one failure in 3 years, on New Year's eve.
We had about 4 power failures related to the UPSes, specifically related to having two redundant UPSes. The UPS engineers always used to talk about how it was funny that adding a UPS in many regions (with stable power) actually lowers the reliability of the power, and adding two of them always seems to make it even worse rather than better.
This is one of the instances which has made me wary of "HA for HA sake because we read about it in IT weekly magazine". I've seem similar effects in lots of networking scenarios, but the UPS one is always the most graphic, I think. :) adam.
------ Original Message ------ From: "Kevin Phair" kevin@nyi.net To: "Observium Network Observation System" observium@observium.org Sent: 05/10/2014 15:37:05 Subject: Re: [Observium] - high availability
On 10/3/14, 7:48 AM, Adam Armstrong wrote:
What is the value of high availability for a non-service affecting support application?
In our case, we are hoping to ultimately replace our current system that reports on burstable bandwidth usage with Observium; once that occurs, downtime with Observium means we risk losing money, making the additional complication worth it. It does seem like a problem best solved outside of Observium instead of within though.
Needless complication for no appreciable gain is the cornerstone of all IT failure.
Adam.
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On 3 October 2014 11:49:07 Paolo De Michele paolo@paolodemichele.it wrote:
hi everybody,
anyone know if it is possible set up observium in high availability? I'm thinking to use it for all my servers but I have necessity to have 2 or more nodes
anyone can help me? thanks in advance
cheers
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