After associating the storage policy with a subclient and before running a backup, ensure that you are able to see the CVLT_FIO disks that are exported from the SAN data server in the operation system. Also, you must not format or initialize the NTFS partition on the disks as it might cause SCSI exception errors. Formatting or initializing the NTFS partition on the disks might cause SCSI exception errors.
Verify CVLT_FIO Disks
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