From: Walter Hafner <hafner@informatik.tu-muenchen.de> To: questions@freebsd.org Subject: High availability and limited budget Message-ID: <srjhfprepb7.fsf@hprbg5.informatik.tu-muenchen.de>
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Hi there,
I'm not sure,when the topic came up last:
I need to build a high availability system, but have only a very limited
budget.
The system mainly runs a Perl application with Web-Frontend. There will
be about 500 people with write permission and unlimited people with read
permissions (this is WWW, after all). No seperate DB engine. I expect up
to 1.000.000 hits per month.
I know there are high availability solutions from HP and Sun, but I'm
afraid that they are far too expensive.
Using FreeBSD, a could imagine a sufficient fist step:
- buy two identical machines,
- put the disk from one machine into the other
- put the diskless machine in some cabinet and lose the key. :-)
- mirror Disks with ccd
- if a disk dies, proceed with the other one.
- if a board dies, switch machines
Note: I don't want to ose vinum, because of its beta stage.
Different opinions?
Not even close to a real "high availability" solution, but - as I said -
sufficient as a first step.
Any better ideas? I'm not limited to FreeBSD, of course - I'm not a
blind FreeBSD advocate, I just happen to run a couple of FreeBSD boxes,
because it's the best system around for the jobs I run. I'm open to any
high availability solution, that doesn't cost much more than two high
end PCs plus software, if necessary.
Please don't tell me that true high availability costs MUCH more than
I want to spend. I know that. I didn't make the budget. I'm just the guy
who has to implement it.
Bye,
-Walter
--
Walter Hafner__________________________________ hafner@in.tum.de
<A href=http://www.tum.de/~hafner/>*CLICK*</A>;
"Multiple exclamation marks," he went on, shaking his head,
"are a sure sign of a diseased mind." (Terry Pratchett, "Eric")
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