Disaster Recovery as a Service (DRaaS) is very appealing to data center administrators looking to meet ever tightening recovery objectives but still reduce costs. By leveraging DRaaS, organizations can eliminate the cost of a secondary site and buying stand-by equipment for that site.
But there are aspects of DRaaS that IT professionals need to be concerned with like seeding, recovery and the time it takes to return to the original primary site after disaster has passed. DRaaS is not the only cloud option, using the cloud as primary storage is an alternative that deserves consideration.
The edge manifesto calls for the placement of content, compute and data center resources on the edge of the network, closer to concentrations of users. This augmentation of the traditional centralized data center model ensures a better user experience demanded by digital business.
Storing primary data in the cloud flies in the face of logic. Data is typically stored where the user would create it and there is one reason for that: physics. There was a time, of course, when storage and compute were always in one physical box – then came networked storage. Shared storage introduced a few milliseconds or so, but that was deemed an acceptable tradeoff for the advantages that shared storage brought to the table.
Shared storage also introduced another problem: the noisy neighbor. If multiple servers are sharing the same storage resource, the other servers in a sharing network can significantly impact the performance of one server’s storage. This is why some storage products introduced Quality of Service (QoS) features.
Users have long dreamt of storage without the overhead of provisioning, management, migration, and, of course, data protection. While cloud-storage services have many of these attributes, they can’t meet the performance and latency requirements to be primary storage supporting the line of business applications upon which most organizations rely. ClearSky’s Global Storage Network uses low-latency gigabit metro Ethernet to connect a flash-based cache in the customer’s datacenter to a ClearSky point of presence within the user’s metropolitan area, where the customer’s data is stored. This architecture allows the Global Storage Network to provide the performance demanded by primary storage applications and the highest level of data protection.
We tested an early beta version of the ClearSky Global Storage Network and found it performed in line with our expectations.