From: | Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net> |
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To: | PgSQL General ML <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Linux ready for high-volume databases? |
Date: | 2003-08-27 07:32:27 |
Message-ID: | 1061969547.18108.322.camel@haggis |
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Lists: | pgsql-general |
On Tue, 2003-08-26 at 23:35, Greg Stark wrote:
> Dennis Gearon <gearond(at)fireserve(dot)net> writes:
[snip]
> This doesn't provide what online backups do, of recovery to the minute of the
> crash. And I get nervous having only logical pg_dump output, no backups of the
> actual blocks on disk. But is that what everybody does?
Gak!! It can never be guaranteed that the "actual blocks on disk"
are transactionally consistent. Thus, the pg_dump output is suff-
icient.
However, there is still the large problem of PITR. Unless you
double your h/w and run Postgresql-R, you can not guarantee recov-
ery to an exact point in time if there is a hardware failure that
destroys the database.
Therefore, you can only restore databases to the time that the
last pg_dump was taken.
--
-----------------------------------------------------------------
Ron Johnson, Jr. ron(dot)l(dot)johnson(at)cox(dot)net
Jefferson, LA USA
The difference between Rock&Roll and Country Music?
Old Rockers still on tour are pathetic, but old Country singers
are still great.
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