HP P6000 Cluster Extension Software Administrator Guide (5697-0986, June 2011)

Rolling disaster protection and snapshots/snapclones
To implement rolling disaster protection, you can create P6000 Business Copy disk pairs for DR groups
locally. The P6000 Business Copy snapshots or snapclones must not be presented to the local cluster
node because MSCS uses the disk's signature to identify a cluster disk, and the cluster software cannot
differentiate between the original disk and the clone if both are presented to the same server.
HP Storage Management Initiative Specification
To control P6000 Continuous Access-mirrored vdisks from a server, P6000 Cluster Extension uses the
HP SMI-S interface. The HP SMI-S client implemented in the P6000 Cluster Extension cluster integration,
or in the CLI, communicates with the HP SMI-S server running on the P6000 Command View
management server.
NOTE:
In this context, the term management server refers to the server running HP P6000 Command View.
The management server could be a general-purpose server, dedicated management server, ProLiant
Storage Server, or SMA.
Consider the following about the HP SMI-S server:
• The HP SMI-S server implements the programmatic interface and functionality of the P6000 Com-
mand View and P6000 Continuous Access user interfaces.
• HP SMI-S uses the CIM and WBEM specifications to define common models for storage hardware
and storage functions.
• For P6000 Cluster Extension, a HP SMI-S server is required to control P6000 Continuous Access
operations and to gather storage system status information. The HP SMI-S server names are stored
as objects, and an encrypted configuration file stores access information for each application
service. In addition, you can configure several management servers to provide additional redund-
ancy, so that P6000 Cluster Extension will switch to the next available management server when
a management server becomes unavailable.
• The HP SMI-S software must be installed on each management server and should be running at
all times to provide failover capability.
HP P6000 Cluster Extension Software Administrator Guide 21