Zero downtime backup and HP StorageWorks Continuous Access EVA

Data Protector A.05.10 - ZDB for EVA in the CA Configuration

Chapter 7: New omnirc Variables

The ZDB for CA EVA extension introduces support for new environment variables that can be set in the

<Data_P rot ect or_home>\omnirc file on both the application and backup systems. You can use these variables to customize the

operation of the Data Protector EVA agent in the CA EVA backup environment. Refer to the HP OpenView Storage Data Protector

Administrator’s Guide for information on how to use the omnirc file.

7.1 Variables for Fine-Tuning the EVA Agent Operation with CA EVA

Four additional omnirc variables were defined for handling the time-outs when waiting for the destination virtual disks to become

up-to-date or when the copy set appeared to be in a non-normal state.

EVACA_QUERY_INTERVAL: This variable specifies the time interval (in minutes) between queries of the EVA storage system for

checking the progress of the logging and/or copying process in CA EVA. Such querying takes place during a ZDB tape backup session

immediately after the resolving phase of the backup system is complete.

The default value of this variable is 5 minutes.

EVACA_MSGWAITING_INTERVAL: This variable specifies the time interval (in minutes) between messages that report the

progress of the logging and/or copying process in CA EVA. The progress is monitored during a ZDB tape backup session immediately

after the resolving phase of the backup system is complete.

The default value of this variable is 10 minutes.

EVACA_COPYSTATE_TIMEOUT: This variable specifies the time interval (in minutes) after which the backup process will stop

waiting for the DR group that has been found in the "copying" state. The snapshot backup process will skip the source virtual disks (in

case of the source virtual disks backup) or the destination virtual disks (in case of the destination virtual disks backup) that belong to the

DR groups which are in the "copying" state, and continue creating replicas of other virtual disks that might be part of the ZDB backup

specification.

The default value of this variable is 15 minutes.

EVACA_MERGINGSTATE_TIMEOUT: This variable specifies the time interval (in minutes) after which the backup process will

stop waiting for the DR group that has been found in the "merging" state. The snapshot backup process will skip the source virtual disks

(in case of the source virtual disks backup) or the destination virtual disks (in case of the destination virtual disks backup) that belong to

the DR groups which are in the "merging" state, and continue creating replicas of other virtual disks that might be part of the ZDB

backup specification.

The default value of this variable is 15 minutes.

For information on other EVA agent-related environment variables, refer to the HP OpenView Storage Data Protector EVA/VA/MSA

Integration Guide.