Hey there, @rockingSharma!
I believe @Adam is right, you will get a much better performance if you install the OS on the SSD, rather than the secondary data drive. Why would you want to do that? Can you give us more details about the storage setup you wish to configure? Posting your PC specs would also be helpful.
I'd also strongly recommend you have another backup location for your most precious files on the system (both SSD & HDD) and it should be outside of the PC itself (off-site). Backing up your primary drive to the secondary one is not a solid backup solution because the drive is still inside the system. Backups are done to prevent any potential data loss, but what would happen to your files if the whole system got damaged? That's why an external drive is a better solution for your backup. There are multiple backup software utilities that you could use. Moreover, there are even external drives that come with such utilities pre-installed.
If you want to backup your whole system and your files from the WD Blue, then I'd suggest you consider using
Acronis True Image WD Edition. It has multiple features that include cloning drives, backup the operating system, applications, settings and all of your data.
Hope this helps you. Keep us posted with the details, though!
SuperSoph_WD