Flash is the go-to performance option when IT professionals face a storage performance challenge. The problem is that the price of flash is still at a premium versus what you can buy traditional hard disk technology for. And the reality is that not all (actually most) workloads don’t need flash. As a result organizations have to make a choice: do they overbuy on flash, an all-flash array, or try to manually balance cost and performance with a hybrid storage system?
The All-Flash Problem
All-flash arrays are the performance sledgehammer. They don’t solve performance, they obliterate it. Again, the reality is that most workloads don’t need flash performance, at least not all the time. Flash storage you use for something other than solving performance problems is a waste of the technology’s potential and of the organization’s money.
Ideally an organization should be able to buy just the amount of flash they need right now and incrementally add more flash capacity as needs justify it. Most all-flash vendors don’t have an answer to this problem. They typically sell you way more flash capacity than you need, counting on you to fill it up eventually. The problem for the buyer is that flash dramatically goes down in price every six months.
Flash is Technology Not Wine
Flash is not wine, it does not become more expensive with age, it gets cheaper. Buying excess flash capacity NOW is one of the worst investments that an organization can make. But buying the bare minimum amount of flash is also problematic. Most organizations will continue to need more flash as time goes on and workloads scale. Vendors make adding flash capacity to their systems, either through scale-up upgrades or scale-out architectures, very easy. The problem is the human element as the upgrades occur. Since you have to budget and pay for additional capacity, some would say it is justifiable to do a massive upgrade on a schedule and use the available IT staff to make sure the upgrade or expansion works. The theory is, once you add capacity later, you may need to reconfigure workloads so users can access the new capacity. But there is a way around this so you can get the flash you need now, affordably get it later and not have to reconfigure everything to make sure you can access that new additional capacity.
You can see in an on-demand webinar we did with Tegile that you can address these challenges in a new way to solve the performance versus budget problem that flash causes. It is essentially a new business model. Tegile will install the flash storage system on-premises with more than enough capacity to meet the organization’s needs but the organization only pays for the exact capacity that they use, not more. If the organization’s needs grow, it can quickly unlock the existing capacity without having to schedule an upgrade. More importantly if their needs decrease they can give capacity back to the vendor. Not even scale-out storage systems can do that.
To learn more watch our on-demand webinar “Flash as a Service” and see if this new way of acquiring flash makes sense for you.