HP StorageWorks Application Recovery Manager Administrator's Guide (T4395-96004, February 2008)

Appendix B
Limitations and Recommendations
Appendix BB-2
Limitations and Recommendations
This appendix contains general limitations and recommendations for
using Application Recovery Manager.
Size Limitations
Number of Sessions in the Database
There can be up to 1,000,000 sessions in the database. At the most, 2,000
backup sessions can be run in one day.
Number of Backups Scheduled at One Time
The maximum total number of backup sessions running in parallel is 60.
The default value is set to 5. This can be increased using the
MaxBSessions global option. When the number of parallel sessions is
larger than 50 (recommended maximum) the probability of hitting one of
the system limits on the Cell Manager increases significantly (TCP/IP
limitations, memory limitations).
Installation Limitations
• Application Recovery Manager requires the same name for both, the
computer name and the resolving hostname.
• Microsoft Installer (MSI) 2.0 is required to install Application
Recovery Manager A.06.00. If an older MSI version is installed on the
target system, the Application Recovery Manager setup will
automatically upgrade it to version 2.0. In this case, Application
Recovery Manager will display a note at the end of the upgrade,
stating that MSI was upgraded. It is highly recommended to restart
the system, if MSI was upgraded. This applies to remote installation
procedure as well (the MSI on the client will be updated and it is
recommended to reboot the client).
• When installing Application Recovery Manager on Windows, you
cannot run multiple instances of the setup.exe program.
•The <file share> name used during the installation of the
Application Recovery Manager Cluster Integration on Windows must
not be "omniback". See also the HP StorageWorks Application