Background process on 5TB drive has been running for a month. When will it complete?

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I moved a 5TB drive, nearly full of files, to my new computer.  When the system is idle, Kaspersky Anty-Virus kicks of a process in background.  This process appears to be scanning the contents of the 5TB drive, I can hear the arms on the drive moving.  This has been going on for a month now and I was wondering how much longer it will take to complete what ever process the AV is doing on the drive.  I want the protection so I don't want to exclude the drive from AV coverage.