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Old 01-16-2008, 04:49 PM   #1
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Asynchronous Distributed Filesystem on RHEL

Linux Questions,

We have a requirement for a new project to synchronize 6TB of data to our DR site. The data is split into a number of volumes (30x200GB I believe) of which one is being actively written to, but the others may have data deleted from.

We are running RHEL 4 AS and synchronizing the data around 20km over some relatively large dark fibre links.

Has anyone come across a good solution to this problem? I think GFS will not work across high latency and we want something that will survive if the link goes down (hence the asynchronous). DRDB from the Linux-HA project looks like it does what we want but I don't know whether it is supported by RedHat and I have never used it myself. I think rsync will not work with such a large amount of data at least not without some serious trickery otherwise it will cause a large performance hit.

In this instance synchronizing through our SAN does not appear to be an option.




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