Good Day,
I have recently been spent quite some time reviewing deduplication ratios on backups in NetBackup and looking at how we can change how we store our data to achieve better backups.
In most cases Compressed files tend to be the worst offender for poor deduplication. We have NetBackup for SQL Server technology which works very well however there are many scenarios where you have an SQL developer who will insist that their .bak (which is often compressed to save space) must be backed up so they can restore from their backups. A simple method that they know and trust.
The 2nd scenario I am coming across is RAR and 7z files where someone has had to compress files in order to free up limited space they have. If these are added too there goes my deduplication rate.
My question is.. Has there ever been investigation into a feature in NetBackup where compressed archives can be accessed and backed up with their compression removed?
Unlike encryption we know how Compression is structured and made, read, and how to identify types of compression like LZMA1/2 and PPMd.
Any thoughts on the above would be greatly received.
Matt.