Some advanced functions
of the HP MA and EMA are not supported
by the SAN Volume Controller.
Advanced copy
functions
Advanced
copy functions for HP MA and EMA systems (for example, SnapShot and
RemoteCopy) are not supported for disks that are managed by the SAN Volume Controller because
the copy function does not extend
to the SAN Volume Controller cache.
Partitioning
HP MA and EMA
support partitioning. A partition is a logical division of a container
that is represented to the host as a logical unit (LU). A container
can be a RAID array or a JBOD (just a bunch of disks). All container
types are candidates for partitions. Any nontransportable disk or
storage set can be divided into a maximum of eight partitions.
The
following restrictions apply to partitioning:
- Partitioned
containers are fully supported if the HSG80 controller
is connected to the SAN by a single port.
- Partitioned containers
are not configured by the SAN Volume Controller if
the HSG80 controller is connected to
the SAN by multiple ports.
- Partitioned containers are removed
from the configuration if a
single port connection becomes a multiport connection.
- Partitioned
containers are configured if a multiport connection
becomes a single port connection.
You must partition containers
such that no spare capacity exists
because there is no way to detect unused partitions. With a multiport
connection, subsequent attempts to use this capacity removes all partitions
on the container from the configuration.
Dynamic
array expansion (LU expansion)
HP
MA and EMA systems do not provide dynamic
array expansion.
Write protection of
LUNs
Write protection
of LUNs is not supported for use with the SAN Volume Controller.