Thomas Leitner wrote:
>
>
................
> If the outage during the update is unacceptable what about using
> two mirror machines: One standby and RW for updates and one
> on-line running RO. After the update, machines could swap their
> functions immediately. Sure: This would require some fancy IP
> address setup.
Well, assuming that one has enough funds, IBM's HACMP can be installed
(onto IBM systems :). So there should not be a problem while configuring
IP (and this is not the only benefit). IMHO it is not so good for
installations those are having so much users (espacially if you want to
keep them online while switching) like our 10000+, but very suitable, if
you want to back your data servers up (like ftp and http).
Regards;
Can Baysal
>
> Tom
>
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