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Everything about Single-instance storage

Single-instance storage (SIS) is a system's ability to take multiple copies of content and replace them by a single shared copy. It is a means to eliminate data duplication and to increase efficiency. SIS is frequently implemented in file systems, e-mail server software, data backup, and other storage-related computer software. Single-instance storage is a simple variant of data deduplication. While data deduplication may work at a segment or sub-block level, single-instance storage works at the whole-file level and eliminates redundant copies of entire files or e-mail messages. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Single-instance storageA 5-minute orientation
  2. Pick up a classic book: The Conspirators HierarchyThe most-reprinted book on the subject
  3. Go sideways: Data deduplicationA closely related topic
  4. Go sideways: EMC NetWorkerA closely related topic

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🗂️ The subject at a glance

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🏆 Landmark papers (most cited)

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