Re: How to do fast, reliable backups?

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От Andrew Sullivan
Тема Re: How to do fast, reliable backups?
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Msg-id 20040307153258.GB23162@phlogiston.dyndns.org
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Ответ на Re: How to do fast, reliable backups?  (Silvana Di Martino <silvanadimartino@tin.it>)
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On Sun, Mar 07, 2004 at 08:54:07AM +0000, Silvana Di Martino wrote:
>
> Of course, that's right. Nevertheless, it is hard to imagine anything better
> than master-slave replication as a backup/recovery mechanism. For example,
> how more data would you loose during a file system copy?

This actually depends on how the PITR mechanism is implemented.  A
common approach is to do filesystem backup followed by log shipping
to multiple, redundant destinations.  In this scenario, you only lose
what isn't in the logs, which in the case of Postgres means you only
lose uncommitted transactions.

A
--
Andrew Sullivan  | ajs@crankycanuck.ca
This work was visionary and imaginative, and goes to show that visionary
and imaginative work need not end up well.
        --Dennis Ritchie

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