Does NS4-120 support FAST VP?

I have 2 x NS4-120.

CX4-120 at the backend with FLARE 30 running.

Data Movers with this running DART 6.0.

I am thinking about turning on FAST VP [Fully Automated Storage Tiering] on my arrays.

I am running FLARE 30 so I know its supported if I license it.

I can then create a tiered pool – FC + ATA for example – and FAST will move data from tier to tier as needed. All very efficient.

Question – I read that if I want to do this with FILE data that it is only supported on VNX and not the NS/CX?

Is this correct?

What I want to be able to do is create a FAST Pool with my FC+ATA.

Create LUN’s from this FAST pool.

Present these LUN's to teh Data Movers.

Create File Fystems on these LUN’s.

Share them out CIFS/NFS

Then, i want teh data to be tiered away over time based on usage with FAST VP.

Why do I want to do this – because it’s very efficient. Most of users data has an old profile and would be tiered towards the ATA side of the house.

In the document I have, it specifically singles out VNX as capable of this, but not the NS/CX4.

In my (simple) mind this should work.

So, does it work?

Or just not supported?

Why doesn't it work - if FAST works on Block data, what is the difference for File data?

Thank You.