"Shared Everything" clusters
- I have this disk connected to two machines, why can't they both be using it at once?
- Because it is complicated! You need a new filesystem with locking and cache coherency to make it work
- Give a hand to the GFS people
- SGI is developing a clustered XFS
- Veritas has a cluster filesystem and have talked about a port
- Alternatively, use a client/server system which supports redundancy and cache coherency: CODA, InterMezzo
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