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MaxDB 7.6 on NFS, NAS?

Folks;

being into storage consolidation, we so far deal with the idea of moving data and application off our servers to a NAS appliance. In order to choose a good technology on that:

  • The technologies in question all do offer NFS support (we're running MaxDB atop Linux). Is running MaxDB 7.6 off an NFS mount a good idea in terms of stability and performance? Are there any pitfalls to be aware of here?

  • Considering system options, our storage consultant explained that Solaris in some situations seems to do better in regards to NFS than Linux. Given that we're just talking about the database server where operating system doesn't matter that much and there's also a MaxDB build for Solaris out there, would there be any gain from moving our MaxDB installation to a Solaris (10, x86) machine? Any things we should take care of here?

  • Overally, in order to have MaxDB run in a NAS environment, considering both performance/stability and overall costs of this solution, our consultant so far has offered using either an NFS based approach or attaching a storage box using iSCSI, both assuming storage is connected to the servers using a dedicated (GBE) LAN. What technology would be preferrable here?

Thanks in advance for any hints, best regards.

Kristian

replied

>our storage consultant apparently has been through a project of moving an Oracle database to a NetApp system with pretty good results involving iSCSI (not NFS); we indeed will have to do some test-runs and see how things overally do.

Oracle works much better using NFS due to its different method of reading data (reading multiple chunks with one I/O, using bigger blocks etc.). That concept is not transferable to MaxDB.

You may be satisfied with iSCSI for MaxDB, the difference between fibrechannel and iSCSI is not that big.

Markus

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