Hello Alex
Yes, you can

In fact, Sun has a product that does just that. It was called Midnight 
Special now it's something like Infinite Archiving System (or something 
like that, just search for the Sun Reference Architectures for it).

A SAM-QFS File system is seen as an POSIX FS so, no "certification" of 
applications is needed, it's just a disk where you read and write. In 
that way, writting to a SAM-QFS File system is nothing special, just do it.

Now, reading, it may give you some minor headaches.

If you have a File that's already archived into tape and have a client 
trying to access it from NFS, NFS v3 has the concept of archived file. 
Therefore, the exit code of the read operation will not be 0.

If your applications (or users) aren't aware that the files can be 
archived, you may see "unable to access file" errors. Talk with your 
users about this or configure your NFS server to give return codes like 
if it was an NFS v2 server.

CIFS, on the other hand it's too dumb to know that files may be archived 
so, you shouldn't have much problems there.

I may be confusing people but, weren't you the one thinking about using 
this type of solutions for CAD files?

If that's the case, those files are usually very big and the loading 
time on the application end up being big(ish) due to the processing 
that  your CAD tool has to do.
I would configure SAM to always keep on Disk the first few MB of the 
file. That way, users will not even notice any particular delay in the 
file loading, even if the file's already on tape.

-- 
JaimeC

Wilkinson, Alex wrote:
> Hi all,
>
> I have read that that you cannot share out SAM-QFS filesystems
> via NFS and CIFS because NFS/CIFS are managed by SMF and SAM-QFS is not.
>
> Is this truly the case ?
>
> If I cannot share out SAM-QFS via CIFS and NFS it will be kinda a 
> show-stopper :(
>
>  -aW
>
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