I have a volume from an R200 mounted over NFS. I copy file foo from the client onto the filer. I then create a snapshot. I delete foo and recreate foo, which has the same or slightly modified content (but different metadata). I now copy foo onto the filer. How much space have I just consumed on my R200? foo plus changes or 2xfoo?
Thanks,
Alex.
I appreciate the number of personal responses I have received, even though most of them have simply pointed out that 1+1=2 :-)
The reason I posed the question purposefully naively is because NetApp indicated that this may not be so and gathering from one reply I have received, it was file folding that they had in mind.
The question then is, can file folding help me here?
The number of files that gets copied is actually rather large and the total increase I am looking at is around 250GB/week. Some of the files never change, some change sometimes, and some are generated anew every night. Instead of creating a datestamped qtree every night, Snapshots were suggested as a way to reduce the growth. Since the files are only the same in content and location after they are copied, how does file folding work? This is all over NFS and not CIFS, which apparently has file folding enabled by default.
The limit of 255(?) snapshots is also a concern since I need to keep more daily copies around than that.
Thanks,
Alex.
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Alex Bochannek