We have millions of files in lots of directories, for example:
\00\00\00\00.txt \00\00\00\01.pdf \00\00\00\02.html ... so on \05\55\12\31.txt
backing up these to tape is slow as backing up data in this format is much slower than backing up a single large file.
The total number of files on a disk and the relative size of each file impacts backup performance. Fastest backups occur when the disk contains fewer large size files. Slowest backups occur when the disk contains thousands of small files. Backup Exec Admin Guide.
Would the backup performance significantly increase by creating a virtual hard drive, hosting the data on it once mounted then backing up the vhd instead?
I'm unsure if the underlying data within the vhd would affect this.
what are the drawbacks to this method?