How do I confirm that dynamic tiering is actually working?
We have 2 x HUS110, each populated with a mixture of SAS and SAS7K, arranged as one pool with two tiers. To date, after more than a years running, I don't think I have ever seen anything except 0MB for the Finished Capacity -> Total Relocation metric. At the moment one array has 12.9TB planned demotion, with no planned promotion, and the other 6.3TB total planned relocation, 6.3TB high efficiency relocation (promotion), and 960MB planned demotion.
Normally I would not worry, but the spotlight is starting to swing in the direction of one of these arrays as we have a performance issue on a file server.