Virtualization Technology News and Information
Consolidation holds key

Quoting from the Financial Express

The amount of information gathered and used by businesses, whether by enterprise-class or small to medium-sized organisations, is growing at a staggering rate. Further, regulatory demands are increasing the variety of data collected and the time frame required for archiving information. This challenge is exacerbated by the ever-increasing dispersion of servers and "virtual offices" in widespread locations. Today's organisations must find a way not only to manage the data but also to meet the demands of every size of organisation and department in a timely manner.

The world of backup and data archive started in the days where storage and backup devices were attached directly to the servers. This architectural approach has been called direct attached storage (DAS), client-server storage, server-attached storage, and a few others. Though DAS has been referred to as "Islands of Information", on the contrary disadvantages of DAS followed due its architecture such as:

• scalability — adding disk capacity to the disk arrays requires the server to be rebooted. If this happens frequently, it can have a dramatic impact on uptime and data availability for all of the storage attached to that server

• shareability — the DAS model creates problems with cross-platform connectivity (eg, Windows NT and UNIX) because of file system limitations placed on storage by the host system's operating system. Ideally, storage would be a shareable resource that could be allocated and used by many different systems

• performance—in a DAS model, all backup traffic must be routed through the server with the directly attached tape resources. This has an inherent impact on that server's performance and on the local area network (LAN) connection coming into this machine

• access — In this model, the LAN and the backup sever become integral pieces of the backup resource. If the backup server is not available, none of the client machines can process backup or restore tasks. This represents a major source of risk.

In large enterprise IT environments, the limitations of direct-attached and server attached architectures led to the development of storage area networks (SANs). These dedicated pools of storage accommodate massive growth in capacity and allow an administrator to effectively manage more resources.

The new-age solution — consolidate your operations onto a storage area network. A storage area network or SAN solution promised not only improvement in manageability but also lower the total cost of ownership (TCO) as compared to direct attached server. Consolidated networked storage achieves improved storage utilisation with the formation of centralised storage pools that can be managed as a whole and shared across applications and servers; reduced management complexity and operational cost by improving the amount of storage that administrators could manage.

Yes, if you have a strategy and use management as a key criteria you will be able to realise the true benefits of storage networking. The application optimised storage strategy will enable business applications to most efficiently leverage all of the required storage resources to meet their unique service level requirements by masking this complexity and connecting applications to the storage. The goal is to present the storage to the application as if it were direct attached.

Read the original article, here.

Published Monday, June 12, 2006 6:46 AM by David Marshall
There are no comments for this post.
To post a comment, you must be a registered user. Registration is free and easy! Sign up now!
<June 2006>