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Vol. 3 No. 1 March 2004

Slash SAN costs

Saving dollars with distributed file systems A distributed file system delivers the benefits of network-attached storage (NAS)-like data sharing with the scalability of a storage area network (SAN). What's more, a distributed file system can eliminate the cost of spare systems. Systems participating in the distributed file system share access to a common data store, so if a server running an application fails, other participating servers can start the application and resume the work. Some examples of distributed file systems include the IBM's SANFS, Silicon Graphics' CXFS, Sistina's (now Red Hat's) GFS and Veritas' Clustered File System. (See "A simple design for a distributed file system"). It's possible with a distributed file system to build server farms consisting of inexpensive PC servers where each server has a single SAN connection and redundancy is provided through the farm. If a server fails or loses its SAN connection, it can be removed from the farm and file system; the client application can reconnect to another ...

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Features in this issue

  • Storage Pros of the World Unite!

    Commune with fellow storage folk

  • Consolidating NAS pays off

    by  Alan Radding

    The role of network-attached storage may be changing as more and more storage managers discover the the benefits of using NAS to consolidate file servers.

  • Tape type matters

    High-performance tape formats may all seem similar in capacity and throughput, but most formats lend themselves better to some applications then others. Find out how to decide which one is best for you.

  • Slash SAN costs

    by  Marc Farley

    SANs are expensive if you operate them according to conventional wisdom. Find out how to break the vicious circle of high costs that limit the places you can use SANs.

  • How to get the best deal

    Take this crash course in bargaining for storage. Get the lowdown on effective tactics such as resisting vendor lock-in, working with multiple vendors and leveraging the second tier.

  • No SAS for Networked Storage

Columns in this issue