In my last blog, I discussed types of “data movers” including backup, archive, HSM and migration. These are ways to move data, but where are you moving the data to? Disk? Tape? Cloud? A combination of those? The significance of “data mover” applications to an organization’s workflow is closely tied to other elements of their data storage ecosystem, namely storage targets.
Over time, storage targets have evolved from repositories completely “unaware” of the data they hold to hyper-intelligent data management platforms. On one end of the spectrum, more typically found in tier-1 storage, are Storage Area Networks (SANs). These repositories, which are unaware of the data they hold, offer up blocks of storage which a server’s file system or a database administrator must configure into usable storage. With the advent of Network Attached Storage (NAS), storage devices use their own processing power and file system to lay data across blocks – presenting the storage as a folder of files which can be accessed by multiple servers, and even servers with varying operating systems and/or file systems, across the network. SAN and NAS are commonly found in tier-1 data storage, although they can be used in tier-2 storage as well.