The whole problem lies in over-allocation and under-utilization of storage, which has been happening for the past few years. It is a big burden on technology infrastructure and storage costs. In such a scenario, there is much curiosity generated around thin provisioning technology. Whenever organizations are experience huge storage growth, along with the realization that provisioned storage is not used effectively, that is the time they can start considering this technology.
The makeoverBefore going in for thin provisioning, an organization needs to know where it plans to take its IT infrastructure. Enterprises need to know the applications' expectations in terms of I/O performance, and after that comes the storage provisioning process. When
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it comes to the latter, there is a complete change of process in the way organizations provision storage to applications.
When it comes to the Indian enterprise scenario, understanding of the concept is really posing a challenge for the adoption of thin provisioning. The thin provisioning process and retraining of existing resources is the bottleneck in India. Retraining existing resources for the operations is essential to make them understand how storage provisioning can happen automatically, and the components to be monitored.
Can the data be tracked if there is a component failure? Absolutely! The high availability path and data availability path are not compromised on.
Thin-provisioning is based on the redundant arrays in disk (RAID) architecture, and vendors still stick to high availability features. So failure of a component does not mean that you lose data on the RAID set. When RAID thin provisioning is deployed in storage infrastructure, it is grouping of RAID to provide maximum performance and provide a storage pool to business applications so that there is no downtime. So the same theory works. When there is a hard-disk failure another hard-disk takes over.
As to the fees, it all depends on the vendors and the type of storage that an organization has. For modular storage, you require a one-time license fee. For enterprise storage infrastructure, one has to pay per terabyte.
About the author: Srinivas Rao is the head of pre-sales and solutions for HDS in India.(As told to Jasmine Desai.) This was first published in October 2009