When configuring Acronis Files Connect (formerly ExtremeZ-IP) and ArchiveConnect to work with CommVault archives, there are 2 specific registry configurations that need to be made.
1) In the Acronis Files Connect registry: “ServerUsesRelativeHandles" should be set to 0.
After making this registry change, go to the Acronis Files Connect Administrator, click the Settings button, and click the “Refresh Registry” button to have this change take effect.
2) In the CommVault registry: "GXHSM_IGNORE_ALT_STREAM_RECALLS" needs to be set to 'Y'.
HKEY_LOCAL_MACHINE\SOFTWARE\CommVault Systems\Galaxy\Instance001\WinFSDataMigrator\ GXHSM_IGNORE_ALT_STREAM_RECALLS
This change requires that you restart the CommVault services to take effect.