American Megatrends StorTrends 2401 Setup Manual page 31

Select SAN as the Dialect Type
Select SAN as the Dialect Type.
Select Thin or Exact Provisioning
Select the type of provisioning that you want to use.
A SAN volume is a block-level volume. This SAN volume can be assigned an actual size
of the physical size of the storage device using Exact Provisioning or greater size than the
actual physical size of the storage device using Thin Provisioning.
If you select Exact, the volume size cannot exceed the actual physical space available in
the storage device.
It is recommended to leave 20% of the physical space free for snapshots.
Auto Provisioning is not supported for SAN Volumes. For this reason it is grayed out
and cannot be selected. Auto Provisioning is only supported for NAS Volumes.
NOTE:
StorTrends® 2401 Setup Guide 31