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HankDorsett
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January 22nd, 2010 07:00
Application NFS requirements
Does anyone know if the Celerra with NFS is able to satisfy these requirements?
Write Order - The storage solution must write data blocks to shared storage in the same order as they occur in the data buffer. (Solutions that write data blocks in any other order (for example, to enhance disk efficiency) do not satisfy this requirement.) Synchronous Write Persistence - Upon return from a synchronous write call, the storage solution guarantees that all the data have been written to durable, persistent storage. Distributed File Locking - The EMS servers must be able to request and obtain an exclusive lock on the shared storage. The storage solution must not assign the locks to two servers simultaneously. (See Software Options on page 393.) EMS servers use this lock to determine the primary server. Unique Write Ownership The EMS server process that has the file lock must be the only server process that can write to the file. Once the system transfers the lock to another server, pending writes queued by the previous owner must failRainer_EMC
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Posted January 22nd, 2010 08:00
I need to dig up some old EMails about this but basically yes
there is some argument which NFS version is required - Tibco is asking for NFSv4 but I dont think they know why (other than its newer)
we have customers happily using it with NFSv3 as well
Of course its equally or more important that the client has a good NFS stack and uses NFS hard mounts (not soft)
I heard there is also a small test program available from Tibco to test the NFS locking
Rainer
HankDorsett
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Posted January 22nd, 2010 08:00
Yes it is.
I love these companies that give you requirements but not examples for solutions.
HankDorsett
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Posted February 3rd, 2010 07:00
Rainer,
Were you able to find any additional information on this?
Also, are there any issues with running v4 on the Celerra?
Rainer_EMC
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Posted January 22nd, 2010 07:00