Configurable staging behavior?
1997-01-27 11:08:45
I moved to ADSM after working with early versions of NSL Unitree. I
apparently misunderstood the meaning, under ADSM, of the 'Next Storage Pool'
option on a storage pool to include staging (from the next storage pool) as
well as migration (going to the next storage pool.)
Imagine a configuration where one has the clients access a disk storage pool
which points to a tape storage pool for migration. As I now understand it,
one could configure the disk storage pool to buffer tape writes, but once
the data goes to tape I don't see how you can configure ADSM to store
recently-recalled data to a disk buffer in case it will be accessed again.
This has dramatic implications on system design; in order to buffer recent
tape reads (taking advantage of temporal clustering of read access) one must
use something like the HSM client.
Is my current understanding correct, or have I missed something?
How does one submit formal requests for enhancements to the ADSM product?
Thanks,
--
Bill Nickless nickless AT mcs.anl DOT gov +1 630 252
7390
Bill Nickless nickless AT mcs.anl DOT gov +1 630 252
7390
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