Disaster recovery rehearsal in Continentalclusters

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Executive summary
This white paper supplements the information provided in the Designing Disaster Recovery HA
Clusters Using Metrocluster and Continentalclusters manual about disaster recovery (DR) rehearsal.
It provides examples of how to set up and run DR rehearsal in a Continentalclusters cluster using
Continuous Access P9000 or XP data replication, Continentalclusters using EMC SRDF data
replication, and Continentalclusters in Three Data Center Disaster Recovery Solution (3DC DR
Solution). The white paper will help customers and field engineers design and implement a DR
rehearsal solution.
For information on DR rehearsal concepts and features, refer to Designing Disaster Recovery
HA Clusters Using Metrocluster and Continentalclusters at
www.hp.com/go/hpux-serviceguard-docs →
HP Serviceguard Continentalclusters.
Audience
It is assumed that the reader is familiar with Serviceguard, Continentalclusters using Continuous
Access P9000 or XP data replication, Continentalclusters using EMC SRDF data replication products,
and the Three Data Center Disaster Recovery Solution.
It is also assumed that the reader is familiar with DR rehearsal concepts and features provided by
the document Designing Disaster Recovery HA Clusters Using Metrocluster and Continentalclusters,
which is located at
www.hp.com/go/hpux-serviceguard-docs → HP Serviceguard Continentalclusters.
Terminology
Business Continuity Volume (BCV)
Refers to a logical device on the EMC Symmetrix array that may be merged into or split from a
regular R1 or R2 logical device. It is often used to create a snapshot of the data taken at a known
point in time. Although this copy when split is often consistent, it is not usually current.
Business Copy (BC)
A PVOL or SVOL in an HP StorageWorks P9000 or XP series disk array can be split from or merged
into a normal PVOL or SVOL. It is often used to create a snapshot of the data taken at a known point
in time. Although this copy, when split, is often consistent, it is not usually current.
Device group
This is a generic term, used in this white paper to refer to either P9000 or XP Device Group in XP
terminology or SRDF Device Group in Symmetrix terminology.
P9000 or XP device group
A P9000 or XP device group contains one or more PVOL-SVOL device pairs that are used by a given
Serviceguard package.
Primary mirror copy
This is a generic term, used in this white paper to refer to either PVOL in XP terminology or R1 device
in Symmetrix terminology.
PVOL
A primary volume configured in P9000 or XP series disk array that uses Continuous Access. PVOLs
are the primary copies in physical data replication with Continuous Access on the P9000 or XP.
Primary cluster
It is a cluster in production, which has packages that are protected by the Continentalclusters product.