Unified storage implies that it will simplify storage management by having a single platform to deploy storage services (NAS or NAS) The question is however do you need unified storage? The answer is you should do everything that you can to drive down the cost to deploy and more importantly manage storage while at the same time maintaining the storage IO performance that your environment needs. Unified storage should be considered if you have mainstream performance requirements, a fairly balanced need of NAS and NAS services and if there is a compelling price advantage. In our next entry we will explore another form of unified storage that can manage and unify multiple vendors storage hardware.”]
Source: https://www.darkreading.com/database-security/do-you-need-unified-storage-