Advantages of file-level backup:
Backups of a small subset of folders or files on a volume.
Flexible backup policies for different data types on the same volume (for example, daily backup of office documents and monthly backup of photo album)
Chains of incremental archives. Incremental archives reduce occupied space on storage since they contain only changed files.
Disadvantages of file-level backup:
Slower speed when working with a large amount of data.
Not suitable for operating systems backup.
Works only with a limited set of file systems.
Selective backup. Use a selective backup when you want to back up specific files or directories regardless of whether a current copy of those files exists on the server.
then number is even
else, number is odd
Modulo or Mod(Expressed by symbol "%") calculates the remainder if a number is divided by a divisor. Therefore if the number is divided by 2 and the remainder is 0, then the number is even. Anything other than that, the number is odd.
1 GB = 1024 MB
1024 MB / 4MB= 256 MP3 FILES