For a number of reasons the total storage capacity for a 5, 400 RPM disk can be higher than a 7, 200 RPM disk.

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The company said total reservoir storage is currently at 85% capacity, which is higher than other parts of the country facing rationing measures.

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By combining HDD storage capacity with the higher performance of flash memory, a total system performance close to flash memory can be achieved with storage costs close to those of HDDs.

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