About migrating virtual machines

Last published : Jun 19, 2026
When the VRTSsfmh package is installed on a host, it generates a globally unique identifier for the host. Veritas InfoScale Operations Manager Management Server identifies a managed host using this identifier. Veritas InfoScale Operations Manager generates this unique identifier using parameters such as host id and Media Access Control (MAC) address of the host.
Veritas InfoScale Operations Manager tries to maintain the same identifier for the host in case the host is migrated.
On some virtualization technologies such as LPAR or LDOM, the MAC address of the host changes when it is migrated. You need to ensure that Veritas InfoScale Operations Manager uses the same identifier for a managed host even when it is migrated. For this purpose, you need to ensure that the host id of the virtual machine does not change after migration. In most of the virtualization technologies, host id of the virtual machine remains the same after migration.
Exception to this is LDOM, where, if host id is not explicitly set for an LDOM guest (using the command ldm set-domain), then the host id changes after migration of the Virtual Machine. It causes VRTSsfmh package to regenerate the unique host identifier and the current configuration of the managed host is lost. In such cases, the managed host can no longer actively report data to the Veritas InfoScale Operations Manager Management Server.
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