HP StoreAll Storage - Manual (Page 227)

You can work on only one tier at a time. However, when you click Next, you will be asked if you
want to manage more tiers. If you answer Yes, the Manage Tier dialog box will be refreshed and
you can work on another tier.
All new files are written to the primary tier. On the Primary Tier dialog box, select the tier that
should receive these files. You can also select cluster servers and any IBRIX 9000 clients whose
I/O operations should be redirected to the primary tier.
The tiering policy consists of rules that specify the data to be migrated from one tier to another.
The parameters and directives used in the migration rules include actions based on file access
patterns (such as access and modification times), file size, and file type. Rules can be constrained
to operate on files owned by specific users and groups and to specific paths. Logical operators
can be used to combine directives.
The Tiering Policy dialog box displays the existing tiering policy for the file system.
Creating and managing data tiers 227