Commvault HANA backup job is long running || SAVE DATA finishes with error: [447]

If the SAP HANA backup job fails to complete and the issue is not consistent then you might be experiencing a known issue SAP HANA 1. Refer to the KB here
https://launchpad.support.sap.com/#/notes/ 2360533

There are couple of workaround available but the fix is to upgrade SAP HANA. See screenshot below.

Here is what you is seen on the HANA backup log. 

HANA backup logs:

ERROR   BACKUP   SAVE DATA finished with error: [447] backup could not be completed, [110203] Not all data could be written: Expected 91318386688 but transferred 88986353664