Preparing to upgrade SnapManager

Ensure that you prepare the target system, the environment, and the existing SnapManager application before you begin the upgrade process.

Before you begin

About this task

Steps

1. Prepare your target system and environment.
2. If you have upgraded the underlying SnapDrive or Microsoft iSCSI initiator versions to prepare your storage system for upgrading SnapManager, remove the iSCSI dependency with respect to SnapManager during the SnapManager upgrade process.

   There are two ways to do this:

   • Run the Configuration wizard and use the Add Microsoft iSCSI Service Dependency page to remove this dependency.
   • Stop the Microsoft Exchange System Attendant resource service.

   After you finish upgrading the SnapManager application, you can restore the dependency.

3. Prepare the existing SnapManager application.

• Comparison of interactive and unattended upgrade modes
  You can run the software upgrade utility for SnapManager in either the interactive mode or the unattended mode. SnapManager guides you through the interactive mode; the unattended mode requires that you type certain commands and then upgrade takes place on its own.
• SnapManager upgrade paths
  Unless specified for a particular upgrade path, or for a particular troubleshooting situation, you do not need to uninstall SnapManager before reinstalling it, or upgrading to a newer version.
• Upgrade considerations for fractional space reserve monitoring
  SnapManager has fractional space reserve monitoring enabled by default. When you upgrade from SnapManager 4.0 or SnapManager 5.0, fractional space reservation remains enabled. If you upgrade from versions earlier than SnapManager 4.0, it is disabled by default.