How to upgrade the pc RAID1 harddisk from say 4TB to 14TB?

 + upgraded file server RAID1 harddisk (a pair of harddisk) from 4tb to 14tb, steps:-
1. check harddisk type (SATA or SAS) and target size
2. backup the harddisk data into an external harddisk
3. unplug the physical harddisk from motherboard
4. plugin the new physical harddisk into motherboard
5. start the os and configure the RAID1 in bios
6. save and restart the os, format the new disk in windows
7. copy back the data from external harddisk into new internal harddisk
8. reassign the shared folder to each user
9. test the shared folder
10. done