Sep 062013
 

Over the past several years, we’ve all seen the cost of storage-based disk drives steadily go down. We all expected that, right? Every 6 to 12 months or so, the technology solution you purchased will improve or enhance while the cost either stays the same or goes slightly down. In other words, things get better and better by way of technology and price. We’re always looking for ways to do something more effectively while lowering the cost.

Within the iSCSI SAN industry, we’ve also seen this trend as well. For example, when EqualLogic first began shipping its PS storage arrays, the EqualLogic PS50E (half a PS100E) would cost around $21,000 for just a TB or two. Now, fast-forward eight years…the EqualLogic PS4100E you can get 12TBs of raw capacity with a three-year ProSupport agreement for all under $15K. That’s pretty good.

But what you see here is an ever-decreasing “cost per TB.” This model has essentially worked well for clients who need a definable way to measure cost in comparison to their storage capacity requirements. If one can get the cost per TB low enough, it might appear like a “good deal.”

But…Buyer Beware…

While cost is always important, this shouldn’t be the driving factor in your storage analysis…especially when it comes to your network which contains database applications and critical data that shouldn’t be comprised. If you haven’t had some time of network analysis done or a DPACK done on your storage traffic, consider doing so…because even though EqualLogic pricing would indicate that purchasing an EqualLogic PS6100X, PS6100XV, or even a PS6100S might be more expensive, the increase in performance would benefit you in the long-run.

For example, if you were faced with the choice of buying two pens – one was a $1 and the other $5 – you might simply opt to purchase the $1 one for cost’s sake. However, what if (hypothetically) you were tasked to write a manual by hand and could only grab one pen en route to do so…you’d wish you would have had the $5 pen, right…? Same thing in storage. Those applications peak and user demands are heavy…and your organization is always expanding and adding applications and data, so wouldn’t it make sense to secure the right EqualLogic storage solution in the long-run that is going to really maximize your applications and store data at optimal levels? So, remember, cost per TB will win in the short-term but cost per GB performance will win in the long-run…it always does, ask the tortoise…