Poor data housekeeping will delay the transition to flash

duplicate data files

Posted on Wednesday, November 8, 2017

The falling cost of flash storage means that most forward-thinking CTOs are already planning their eventual migration away from slower, spinning disk arrays.

With some experts predicting price parity between disk formats being reached at some point in the next year or two, cost is becoming less of a barrier to adoption.

In order to maximize the value of their investment however, CTOs will need to reduce the amount of duplicate data they hold. And this is where many flash migration plans will run into problems.

A significant resource overhead

Early flash adopters have experimented with deduplication and compression settings in order to reduce capacity wastage. But applying these technologies at the hardware level places additional load on the array’s cache and CPU, which has a direct effect on the overall performance of storage.

Some cash-rich organizations have decided to take the hit, simply increasing overall capacity and disabling the built-in compression/deduplication features of their arrays. More cost-conscious CTOs may not be able to afford this option however.

If your business cannot afford to purchase enough capacity to store current and future data, the move to flash will need to be delayed.

Other space saving options

One alternative would be through the introduction of a dedicated deduplication system, like an EMC Data Domain appliance, combined with a comprehensive, cost saving, OEM independent support agreement.

The Data Domain unit takes the processing load off storage arrays as it removes duplicate data, reducing the size of your overall volume of data held.

Many software vendors are also introducing deduplication and compression into their offerings. Oracle are applying Advanced Compression at the table level for instance, creating space savings of up to 5%.

Using a combination of both techniques, businesses may be able to get their flash migration plans back on track. By investing in a dedicated deduplication device, the issue of space wasting can be resolved before moving from spinning disk to all flash arrays. Well-designed software can then be used to maximize available capacity on the new flash storage.

Otherwise, by maintaining the current status quo, your business will have to delay migration, losing out on the many performance benefits offered by flash storage.

To learn more about CDS’ support capabilities surrounding EMC Data Domain technology, and how to get more value from your existing spinning disk arrays, please get in touch.

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