Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Manuel d'utilisateur télécharger pdf (Page 32)

Introduction to Linux Clustering

This is covered in more details in the DRBD filesystem section earlier in this

document, but basically you divide the cluster nodes into pairs.

Each pair runs DRBD primary/primary to ensure data replication. On top of that, you

run a distributed filesystem such as Lustre of AFS. However, this can be quite

complex and has the weakness of being limited by having replication only on 2

nodes.

Three+ distributed clusters can be quite complex and require a lot of planning to make sure

they will work reliably and have speedy access to storage. The best solution will depend

greatly upon the applications you need to run.

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Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Manuel d'utilisateur Page 32