If you want to control on a per file basis which pool your data will be on via an API and can't make use of path/file access time only, then extended file attributes are probably your best bet.  Using our RAN (Restful Access to Namespace) you can see your own custom attributes on files that can then be leveraged the next time the SmartPools job is run.  Example: set a custom attribute of status = archive via the API. Configure your policy to match in that and move your data down to the NL400 tier.  You should be able to find the doc on RAN on support.emc.com . Let be know if you can't.  Thanks, Jason Sturgeon Isilon Sr. Technical Marketing Engineer EMC² | Emerging Technologies Division
Hi everyone.  We are running a two pool Isilon cluster. n x S200 nodes, and n x NL400 nodes. Is it possible, via the API, to control the  pool where files are stored without the "Smartpools" feature?   Lets say I wan't to control where files are store, so some files are initially stored in the S200 nodes, for fast access, and the later moved to NL400. I want to control this manually.  Can this be done without the automatisk "Smartpool" license?  /Kim
Isilon API control file placement in pool