SMISA ZDB for HP StorageWorks EVA in HP-UX LVM Mirroring Configuration

SMISA ZDB for EVA in HP-UX LVM Mirroring Configuration
Concepts
Chapter 16
Concepts
Prerequisites
The following prerequisites are necessary to perform a ZDB session on HP-UX LVM mirroring
configurations:
• EVA Business Copy licenses available on at least one of the arrays on which the logical
volume mirrors will reside.
• HP-UX MirrorDisk/UX software license (to enable mirroring functionality on HP-UX
LVM)
• VCS version 3.020 or above installed on the EVA HSV controllers
• Data Protector certified EVA SMI-S provider installed on the Management Appliance
Limitations
The following limitations exist for ZDB when run on HP-UX LVM mirroring configurations:
• Volume Groups must contain PVG-strict mirrors for selective replications.
• Only consistent mirrors will be selected to participate in creating replicas.
• Mirrors of a Logical Volume must be fully hosted by one or more Physical Volumes
belonging to the same Physical Volume Group.
• During mirror selection for replication, the preference will be for the farthest of the
mirrors. That is, in the order: tertiary (in a 2-way mirroring configuration), secondary and
primary.
• If Physical Volumes of the secondary and tertiary mirrors are from arrays in which the
primary mirror resides, the primary mirror will be selected for backup.
• Only Physical Volumes belonging to a Physical Volume Group participate in replication.
• All the Logical Volumes in a Volume Group must have their extents located on the
selected Physical Volume Group.