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The Ultra48 AssuredSAN 4544 2U Rackmount AC DH Drive-less RBOD System is shipped with the drawers installed, but they are not populated with disks.
Dot Hill AssuredSAN 4004 Ultra48 high-density storage arrays use a unique chassis design that was designed
internally to maximize storage processing power in a minimal footprint for greater data center efficiency. The
first of its kind in the industry, the Dot Hill high-density chassis houses up to 57 terabytes of data on small form factor 2.5-inch drives, in a 2U footprint. All Dot Hill AssuredSAN Ultra48 models are built on the company’s ninth-generation RAID stack, which delivers up to 20 percent faster sequential read workloads and up to 70 percent faster sequential writes, compared to previous-generation products. Like previous generation Dot Hill products, the next generation will deliver 99.999 percent data availability, assuring organizations of round-theclock access to data.