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File backup system?

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Your Text: Insert Slimies » Insert UBB Code » Close Last Tag \| All Tags UBB Help	Where I work we have a need for a large amount of space that's highly reliable. So we do NFS storage, with a hot-standby cluster. Two servers form the basis of the cluster. They're interlinked. Each has a few large-capacity hard drives. These drives are striped with RAID0 so that they're seen as one big volume (or if you can find good support for [url=http://www.opensolaris.org/os/community/zfs/]ZFS[/url], use that. It's a sweet filesystem). This big volume is then linked to the volume on the other machine using a system called [url=http://www.drbd.org]DRBD[/url] which mirrors every block of data written on one machine across to the other. Because this kind of setup practically invites race-conditions and write-conflicts, DRBD is designed to only have one node writable at any one time. Now, we use these volumes for the storage of mail from our (admittedly large) mail server cluster, so we require high-availability. For this we use heartbeat, which is a nice system to work with if you like poking yourself in the eye repeatedly with a red-hot fork. It does everything you might want it to, though. You've just got to put up with the fact that version 2 of heartbeat falls in love with the ungodly concept of XML configuration files, and takes it beyond an extreme. ... ahem Sorry, back to the topic at hand. Heartbeat takes care of all the cluster resources for us, including monitoring them and taking them up or down as needed. It starts up DRBD, puts one machine in the Primary state, mounts the DRBD filesystem, puts an IP alias in place for the NFS server to use, then starts NFS. Should any resource fail for any reason it will try to bring it back up and, failing that, will shut down all resources and transfer them to the other server. This is the hot-failover portion of it. Now, I don't know what might be going on with the department there, so the solution we use might be a bit on the extreme side. Then again, it might not. I can point you to everything you need to know in order to set it up, though. [url=http://sunday.yarinareth.net][img]http://members.ii.net/~skaarjj/tempus.gif[/img][/url] Justice 4 [url=http://www.justice4pat.com]Pat Richard[/url] Loading...
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