Hi Tim,
The Crossroads StrongBox simplifies file management and expedites retrieval from an LTFS library via a disc caching layer. And yes, policy-based management options for data ingest/egress optimize internal operations, as you mention above. It can be configured with SAS or FC and with leading LTO libraries.
Disclaimer – I work for Crossroads; happy to answer any questions!
-Nicole
nbarnes@crossroads.com