In recent discussion related to the backup performance analysis from WT-7431, it was discussed that realistically backup is used to copy across different hardware disks. To mimic the performance regression performed by backup on WiredTiger, a more clearer impact is performing backup, and for each file rather than doing a read and write operation (copy function) instead provide only impact on the same disk to read in files only. This is because usually the other disk gets impacted with the write operation. This will reduce the disk I/O overhead that we are observing in the performance analysis.