Hi

Gila Sir is Right

Firstly you should checkout IO subsystem zeroed out a couple of large chunk of that data file. If you found something unusual then pls go through further steps:-

Check the disk system. The problem could be related to the disks, the disk controllers, array cards, or disk drivers.

Contact the disk manufacturer for the latest utilities for checking the status of the disk system.

Contact the disk manufacturer for the latest driver updates.