how do i got about this , ntfs paste all files , chkdsk /f , repair windows 8.1 dvd ?

It is rare that CHKDSK cannot fix a NTFS filesystem.

What can happen is that a number of files (for whatever reasons) are not indexed properly anymore, and as such will "disappear" (and you can copy them back from the backup/recovery you made). 

 

There might be reasons to rebuild/fix a filesystem, but starting from scratch (formatting the volume) usually is - if not faster - less error prone.

 

I would be more preoccupied about understanding what exactly caused the corruption.

 

More or less the only thing that you can do is to change the data cables of the SSD's, make triple sure they are connected properly and run some manufacturer test in the SSD's themselves.

 

jaclaz