[YLUG] Server purchase

[Robert Hulme]

> Oh...  you are absolutely right to question this.  My feeling is that a
> system which the administrator understands throughly is much more likely
> to be reliable than one with a million poorly understood and badly
> implemented failsafes.  I was pretty resistant to the idea of a cluster
> set up initially because I'd rather have a single system I understand
> well.  However, the theory is that someone else will take over the admin
> and there is a (meager) budget to train him to learn all this.
Xen might be a good option.

If you have a good server (server A) running a Xen kernel and with an
LVM partition for your main filesystem you can tell LVM to snapshot
the disk on A and rsync it to B... then if you need to bring the
server up because the first has blown up it is just a case of xm
create xmmyvm on box B.

Of course this doesn't take account of any filesystem / db writes that
have occured since the last update.

-- 
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"98.5% of DNA is considered to be junk DNA with no known purpose.
Maybe it's XML tags." -- Anon

"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are, by
definition, not smart enough to debug it." - Kernighan

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