On Tue, Jun 30, 2009 at 11:38:04AM -0600, Donaldson, Mark wrote:
> ACSLS, though, would fall into the category of "using another software
> package as an interface".  I suspected ACSLS could do that but didn't
> want volunteer that since I don't have firsthand knowledge of it.

FYI--

If you use one of the large STK (now Sun) tape silos, you *have* to use
ACSLS-- it's not really an "extra".  It's part of the silo control system
and how any product (e.g., Netbackup, HSM, etc.) requests tape 
mounts/dismounts. 

These silos have a Data Path (how your system connects to the back of a 
tape drive for data transfer) and a Control Path (how your system requests
robotic tape-handling actions).

A Sun/STK SL8500 can also be hard-partitioned into 4 LSMs (ties a physical
group of tape slots with a physical set of drives).

At our site, we probably have 10+ separate systems sharing a single 
SL8500 silo (with a single ACSLS interface). Trivial in Netbackup (just 
don't tell it about anybody else's tapes).

Previous posting is quite correct-- you don't want to have multiple
systems "own" any given tape.

--- Cris

-- 
 Cristopher J. Rhea                     
 Mayo Clinic - Research Computing Facility
 200 First St SW, Rochester, MN 55905
 crhea AT Mayo DOT EDU
 (507) 284-0587
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