I'm new to FAST so this question might be dumb.

The question is will fast/vp fill up say an EFD pool if there is not enough capacity in the pool but the demand might warrant it being in the EFD pool.  I obviously want to avoid any host write errors.

We have SATA,FC,EFD thin pools on vmax 5876 and the majority of the volumes are not preallocated and applied a 100/100/100 fast policy.  All devices are bound to the FC pool.