Ranks are organized in two rank groups: Rank group 0 is controlled by server 0 and rank group 1 is controlled by
server 1.
Important: Do not mix ranks with separate RAID types or disk rpm in an Extent Pool. Do
not mix ranks of different classes (or tiers) of storage in the same Extent Pool, unless you
want to enable the Easy Tier Automatic Mode facility.
Important: For best performance, balance capacity between the two servers and create at
least two Extent Pools, with one per server.

 

When a logical volume creation request is received, a logical volume object is created and the
logical volume's configuration state attribute is placed in the configuring configuration state.
After the logical volume is created and available for host access, it is placed in the normal
configuration state. If a volume deletion request is received, the logical volume is placed in
the deconfiguring configuration state until all capacity associated with the logical volume is
deallocated and the logical volume object is deleted.