The Filesystem repair will be for your Logical volumes not on the module as the module runs from memory. Engineers have asked you to run this and make sure to verify a memory test. To do this reboot the system and after POST enter the ESC or TAB key to access a basic menu.

For the time on the repair for 2TB depends on many factors but anywhere from 1 - 7 min. if all is running smoothly longer if there are other issues.