Once datasets grow into the petabyte realm, a whole new level of availability, management, and protection challenges arise. At this magnitude, given the law of large numbers with the sheer quantity of components involved, one or more components will almost always be in a degraded state at any one time within the storage infrastructure. As such, guarding against single points of failure and bottlenecks becomes a critical and highly complex issue. Other challenges that quickly become apparent at the petabyte scale include the following:
Given these challenges, the requirement for a new approach to file storage is clear. Fortunately, when done correctly, scale-out NAS can fulfill this need.