HP Application Recovery Manager software A.06.10 Administrator's guide (March 2008)

2 Backup
Introduction
This chapter describes configuring a filesystem and disk image ZDB sessions using
the Application Recovery Manager GUI.
You should be familiar with EVA concepts and procedures and basic Application
Recovery Manager ZDB and instant recovery functionality. See the EVA-related
documentation and the HP Application Recovery Manager software concepts guide.
Limitations
• The backup fails if you try to create a replica of a particular snapshot type and
a replica of a different snapshot type (more specifically, standard snapshot or
vsnap) for the same source volumes already exists. You must delete the existing
replicas first. Snapclones are an exception. They do not block the creation of
other snapshot types.
• Only one snapshot type for target volumes can be created during a ZDB session.
• When a cloning process of a source volume is in progress, another snapshot (any
type) of that source volume cannot be created.
• You cannot back up replicas (target volumes from existing and currently recorded
backup sessions).
• If there is not enough space for a standard snapshot or snapclone creation, the
session fails.
Cluster limitations
• The backup system must not be in the same cluster with the application system.
• If the backup system is a cluster virtual server, the replicas cannot be properly
deleted from the replica rotation set and you can manually delete them. For more
information, see “Backup problems” on page 57.
For more information on backup-related considerations, see the HP Application
Recovery Manager software concepts guide. For detailed information on
Administrator's guide 29