The procedure to backup the blog is very simple and is as stated below:
- Sign in to your blogger account. Go to Settings from Design or Dashboard.
- Hit on the Other options from Settings tab.
- Look at the Blog Tools: Import Blog - Export Blog - Delete Blog.
- Hit on the Export Blog.
- Now click Download Blog.
- Save the .xml file in your hard disk.
If you wanna restore your blog from a previously saved copy then follow the above steps again. Just in the Blog Tools- Choose Import Blog. Then choose and upload the .xml file that you've already in your hard disk. Generally the name of the backup file is something like blog-mm-dd-yyyy.xml
Advice Related to Storage of Blog File
You can backup the blog file and can store it in your Google backup cloud which is also called as Google drive and all those with Apple account can even backup the data at Apple cloud. It is always better to keep such files in a folder and keep the folder encrypted and as a habit make a backup of blog every month so that you lose almost a months work only.