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What happens when it's time to replace your current storage solution? The chances are that, even if you show loyalty to the same vendor, you're going to have to write off some or all of your previous hardware investment. Worst case it's time for a complete rip-and-replace upgrade with storage controllers, disk shelves and interconnects heading for the IT graveyard.
This is another area in which EqualLogic is fundamentally different. All current generations of EqualLogic iSCSI SAN are backwards compatible with previous generations. EqualLogic's pool-based approach to provision of storage means that appliances work together to present storage from a virtualised "pool" which spans all of the appliances in the storage group. As newer, faster technologies are introduced you can still obtain excellent value from your existing arrays as they can remain part of the pool.
Intelligent load balancing and distribution of data ensure that you continually obtain best value from you investment. Over time, data requiring high performance will migrate onto appliances which offer greater throughput, equally, infrequently accessed data will be relocated onto high volume, low cost disk. This functionality is fully automated with minimal administrative overhead, and is included at no additional cost.
I regularly come across IT environments with a number of different, isolated islands of storage. Successive generations of SAN sit side-by-side consuming power and space, with their administrators struggling to manage and gain continued value from each. I have even spoken with individuals who have made a purchase fully expecting to be able to integrate existing kit, who have ended up red-faced, hoping that their financial team don't notice a couple of disk shelves gathering dust in the corner.
Next time a significant investment in storage is due, think long term and evaluate the benefits of a scalable platform that has no boundaries between generations. Such a platform offers true value to the business as part of a long term IT strategy.
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