![]() For example, it might be prudent to keep multiple copies of mission critical data, but this requires more hardware. Storage tiers can also have different levels of data protection. To save energy and reduce costs, use high-speed drives only where necessary, and use slower drives for applications that do not require instantaneous response. Generally speaking, lower performance storage (e.g., lower speed drives, smaller drives, MAID, tape) uses less electricity. Rarely accessed data goes on low-performance, cheaper storage. Tiered storage policies place the most frequently accessed data on the highest performing storage. ![]() Tiers are determined by performance needs, the cost of the storage media, and how often data is accessed. Tiered storage is the assignment of different categories of data to various types of storage media, with the goal of reducing total storage cost. Make better use of existing storage hardware Using storage equipment that consumes less energy.Reducing the volume of data to be stored.Making better use of existing storage hardware.1 Most strategies for efficient data storage take advantage of one or more of the following concepts, explored in greater detail below: Implement Efficient Data Storage MeasuresÄata growth is an inescapable trend: in 2014 IDC and InformationWeek predicted a doubling of volume about every three years through 2020.
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