Inline compression solutions like those from Storwize can provide a 60% reduction in primary storage space used while delivering little to no performance impact. Active data, even though it is not the majority of data being consumed on primary storage (typically 80%+ is inactive), can still be reduced and optimized. The final face of primary storage is storage that is allocated but not in use. An allocated but empty drive is a loser. It costs you more to buy it than it would the day you actually needed it.”]
Source: https://www.darkreading.com/database-security/primary-storage-s-three-faces