Advantages Of Shared Storage

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Abstract
This paper highlights some of the challenges and solutions in managing data in an Enterprise data center. This paper also look into the aspects of how the data can be secured using shared storage concept and how to make them available for recovery.
With a continuously changing business scenario, enterprises are looking to purchase or develop cutting edge solutions to remain competitive and bring down the cost of operation. The components in the storage stack need be replaceable and built around standard open interfaces. Also it should support seamless data migration capabilities.
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About the Author
Jiji Murikkoli Puthanpurayil is the Service Delivery Manager for Goldman Sachs Data Canter Managaement project. He holds a Bachelor degree
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The client is a reputed financial and banking firm technologically well advanced and always keen to be the first in experiencing cutting edge technologies.
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1. Shared Storage
Advantages of Shared Storage over Local Storage
● Efficient use and allocation of storage capacity.
● Performance.
Business continuity.
Shared Storage Offerings
➔ File: Shared network file storage(NAS), presented to a physical or VM host via network (CIFS or
NFS).
➔ Block: Shared block storage (SAN), presented to a physical host via fiber channel, or to a physical or
VM host via network(iSCSI).
➔ Object: Shared blob storage, presented to an application via API.
1.1 Which Storage option suits your business?
While shared storage holds a clear edge over local attached storage, the multiple options available for shared storage can often cause some dilemma. While some of the options may look attractive in terms of performance and data management perspective, it may also require some additional infrastructure which can incur extra cost. However analyzing the business requirement with other factors like cost, one can choose a suitable and viable storage solution.
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1.1.1 Choosing your Centralized Storage Options
SAN NAS
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A SAN does not provide file abstraction, only blocklevel operations. However, file systems built on top of
SANs do provide filelevel access, and are known as SAN filesystems or shared disk file systems.
NAS
Networkattached storage (NAS) is filelevel computer data storage server connected to a computer network providing data access to a heterogeneous group of clients. NAS not only operates as a file server, but is specialized for this task either by its hardware, software, or configuration of those elements.
NAS is often manufactured as acomputer appliance – a specialized computer built from the ground up for storing and serving files – rather than simply a general purpose computer being used for the role.
As of 2010 NAS devices began gaining popularity as a convenient method of sharing files among multiple computers. Potential benefits of dedicated networkattached storage, compared to generalpurpose servers also serving files, include faster data access, easier administration, and simple configuration. NAS systems are networked appliances which contain one or more hard drives, often arranged into logical, redundant storage containers or RAID.

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