What is the combination of the storage access tier the tiered storage model and nas/san are known as?
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Storage tiers can also have different levels of data protection. Storage tiering began as a manual process, but storage array vendors and software vendors developed applications to automatically manage the process of moving data to the appropriate tier based on a company-defined policy.
In traditional tiered storage, Tier 1 data -- such as mission-critical, recently accessed or top-secret files -- might be stored on expensive, high-quality media such as double-parity RAID. Tier 2 data -- such as financial, seldom-used or classified files -- might be stored on less-expensive media in a conventional storage-area network. As the tiered storage number increased, cheaper media could be used. Thus, Tier 3 in a three-tier system might contain event-driven, rarely used or unclassified files on slow-spinning hard disk drives (HDDs), recordable compact discs or tapes.
In traditional tiered storage, Tier 1 data -- such as mission-critical, recently accessed or top-secret files -- might be stored on expensive, high-quality media such as double-parity RAID. Tier 2 data -- such as financial, seldom-used or classified files -- might be stored on less-expensive media in a conventional storage-area network. As the tiered storage number increased, cheaper media could be used. Thus, Tier 3 in a three-tier system might contain event-driven, rarely used or unclassified files on slow-spinning hard disk drives (HDDs), recordable compact discs or tapes.
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