Silicon Graphics FAQs
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XFS is SGI’s scaleable, high performance extent-based filesystem. CXFS is an evolution of XFS that allows multiple clients to access the same filesystem at the same time on your SAN.

As systems scale and data volumes grow, access to, and manipulation of that data becomes a serious bottleneck.

I’ve found that many people are unaware of CXFS, or it’s benefits, and in general there’s a fair amount of confusion over the difference between concurrent access to a SAN filesystem versus shared cluster filesystems, as provided by something like Clustered VxFS.

So, I’ve collected together some documents and information which will give a good grounding on CXFS, and hopefully help show what an impressive feat it is.

DMF – Data Migration Facility – is a valuable tool that can live off the back of CXFS. You might be familiar with the concepts of HSM – Hierarchical Storage Management. DMF is pretty much the same thing.

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