(Simple?) High availability question

[tleslie]

Sometimes it might be possible for a customer to be ok with manual
intervention for fail over.
Also perhaps for a support fee charge.
It becomes more complicated when you have things like
"you want to take a holiday" and who is going to fill
in for that support.
At low budgets, manual restore,
and down times of 1/2 hour (should something happen)
have to be expected.
We currently run on a MS sql server platform,
and thats exactly what we get, a few hours of down time a year.
(and we run CAA/pizzahut/roger-home-shopping-channel/DirectEnergy/and
other clients).
With oracle/linux/HP/netapp, we are trying for 
ninty-nine nines of uptime (ok thats wishfull thinking).
I guess what I am saying is , don't rule out
a human-manual fail over system.
Some times in the grand scheme of things,
its can be very cost effective, all be it makes taking holidays
difficult :(

-tl

On Fri, 2007-06-01 at 17:45 -0400, Madison Kelly wrote:
> tleslie wrote:
> > I have already gone down this road,
> > and end up with the scary sol'n
> > of about 1.2 M $  of oracle licensing,
> > which when bought at that volume,
> > comes down to about 600-700K$.
> > 
> > IBM DB2 looks good, but its only about 30-40% cheaper.
> > 
> > This whole cpu/cpu-core/socket licensing is also a nightmare.
> > 
> > i think pgcluster (or is it pgpool) 2.0 is out now, 
> > and for a small task on a simple system set up with a 
> > good chance to test and burn in, might give you what you want.
> > 
> > I expect will see good stuff in 12-18 months.
> > 
> > If you use java DB connectors there is also a few propri 
> > projects out there that are reasonably priced.
> > 
> > For me , I have gone with a Oracle RAC and 
> > mutli site redundancy with a Netapp dual head
> > 8GB fibre redundant SAN behind the scenes,
> > which gives a pretty good sol'n,
> > well ..... i'll say for sure once I have
> > built it! for north of a M$ it hopefully will.
> > 
> > -tl
> 
> Um, wow.
> 
> That's quite a bit more hardcore than what I need. :) I've got a very 
> small/non-existent budget so fancy hardware and proprietary licenses is 
> just not an option. I've got to do what I can with basic networking gear 
> and a couple new IBM x-series servers, an older (but nice) proliant and 
> a couple white-boxes for misc. tasks.
> 
> Thankfully, the sites we host are pretty straight forward. The most 
> fancy are ones with perl/cgi scripts with a very limited number of 
> php/mysql apps only. No fancy 'web 2.0'/java stuff.
> 
> Madi; who is starting to realize she's got herself into a doozie of a task!
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