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help / color / mirror / Atom feedFrom: Ilya Anfimov <ilan@tzirechnoy.com>
To: pgsql-performance@lists.postgresql.org
Subject: Re: Postgres DB backup is taking too much time
Date: Mon, 4 May 2026 12:29:11 +0300
Message-ID: <afhm58YUGhbwCbNE@azor.tzirechnoy.ru> (raw)
In-Reply-To: <CAHr8x_sQww+XNAFoHkyjYKJYq3CVcQLxJL0yaY3GHNzO3YV+bw@mail.gmail.com>
References: <CAHr8x_sQww+XNAFoHkyjYKJYq3CVcQLxJL0yaY3GHNzO3YV+bw@mail.gmail.com>
On Sun, May 03, 2026 at 12:42:21PM +0300, masheed ullah wrote:
> Hi,
> We have a database of 20TB, and it's taking almost 24 hours to complete.
> While full restore takes 28 hours. Although we have HA enabled with
> primary and multiple replica's.
> So we need a solution/tool to reduce the RTO, incase of disk failure/
> Human error for data/tables deletion.
>
> We are using Barman for backup.
First, you'd need engineers to measure -- what's going on.
Who is the slowest part? The network (most probable)? The post-
gres replication process? The disk that postgres reads? The bar-
man itself? Receiver disks/S3 daemon/etc? TLS of one of the
above?
Measures is the key. Then the solutions may be searched.
btw, a modern postgres can definitely supply 1GB/s to barman on a
modern system. This is not a much, and probably could be im-
proved by special tricks like rsync or manual prefetch or incre-
mental copies -- however, it's less than 6 hours estimate and
therefore is fine for you.
> My question is "Are there any tools like ZDLRA appliances for Oracle" to
> reduce the RTO to less than 10 hours".
> Best Regards,
> Khattak
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Subject: Re: Postgres DB backup is taking too much time
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