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The long life and low usage of archival data make cost considerations paramount. Today, most archival storage architectures depend on magnetic or optical-media such as tape and disk because they have a low initial cost per byte. The high initial cost of Storage Class Memories (SCMs) has been seen as prohibitive for archival use. Nevertheless, SCMs have many advantages for archival use, including physical robustness and low power usage. In this paper, the authors argue that a suitable architecture can exploit these advantages to make SCM competitive with magnetic media for archival use.
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