BackupPC-users

Re: [BackupPC-users] Keeping servers in sync

2009-09-02 21:22:33
Subject: Re: [BackupPC-users] Keeping servers in sync
From: dan <dandenson AT gmail DOT com>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Wed, 2 Sep 2009 19:18:12 -0600
another option for server syncing is to auto iscsi or aoe and add the remote block device to a raid1 of the storage drive.  The up side of this would be online syncing but down down side(s) are network bandwidth during sync, inability for linux md driver to skip already synced blocks.

A workaround for those downsides is that you could just keep the remote server's drive(s) in the raid all the time.  That way they will always be in sync or near it.   Still have a bandwidth concern but it would be smaller.  Should probable use a dedicated network connection between the servers.

If the main machine crashes, the drives could just be mounted up on the second machine.

still use rsync to bring config files over and otherwise keep the two systems synced.  rsync can typically handle an entire linux server without blowing up.
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