Some advanced functions of the HP MA and EMA are not supported by the
system.
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
system because the copy function does not extend to the
system 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 an 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
system 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
system.