CIO and CISO, Evalueserve
In 2012, we implemented storage virtualization within Evalueserve, wherein we built multiple tiers of storage using different types of storage technologies such as SSDs, fiber channel disks, SATA disks and SAS. We allocated storage depending on the kind of performance or IOPS required by specific enterprise apps. For example, for high performance demanding infrastructure such as VDI, we use a mix of SSDs and fiber channels, whereas for data that needs to be archived and performance is not a big issue, low cost SATA disks are being used. For enterprise apps that are not really the ones demanding high performance, we use a mix of near line SAS and fiber disk.
In our business, retention of client data for up to seven to 10 years is a very critical exercise. Keeping such data on disk storage in not cost effective and neither it is foolproof unless you maintain multiple copies of the same. So we resort to tape-based backup and move the client data to the tape at regular time intervals. Another interesting fact is that on the file server side, we have implemented data deduplication, which has enabled us to save about 40 percent of the original disk space capacity.
Prior to the implementation of storage virtualization, most of the data was stored on SAN and on-board storage. Storage virtualization has enabled us to compress the data and move into virtualization storage. Currently, no data is being stored on-board. We are now planning to automate our storage virtualization architecture.
We are also evaluating the option of moving part of our data recovery (DR) on the cloud. Under this, a chunk of our data will reside on a private cloud in the colocation facility of the chosen cloud service provider, while a chunk of the enterprise data will reside within our own private cloud. This is essentially the hybrid cloud model and will enable us to ensure that critical customer data gets automatically replicated onto the cloud DR site.
One of the key reasons of planning to move to the cloud for part of the DR activity was because of the nature of our business — quick recovery of the customer data in time of a disaster is a contractual requirement. So, to strengthen our positioning in the market and boost our brand reputation, we decided to evaluate cloud model as it ensures quick recovery.