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Glossary

A category used for the Blocks & Files Glossary document.

Archive

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Archive – A storage repository for little-accessed data that needs to be retained for a long time. The key difference from a backup is that a backup is a copy of...

5G

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5G – Fifth generation wireless networking. This is up to 100 times faster than the current 4G broadband cellular network standard used by mobile phones. 5G has been designed...

3D NAND

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3D NAND – Three dimensional NAND is a flash chip built so that it scales in width, length and height. Originally NAND scaled in just two dimensions – width...

3-2-1 Rule

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3-2-1 Rule – The storing of a backup in three separate places to ensure one of the versions can be used to recover the backed up data in case...

Storage Glossary

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This is a storage glossary with entries (terms) linked to explanations. It is more than a storage dictionary but not a storage encyclopaedia. New terms will be added as...

MAID

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MAID - Massive Array of Idle Disks to store persistent but little-used data on mostly spun-down disks. Envisage a disk array with a cache of spinning drives and a...

OEM

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OEM - Opto-Electronic Memory. These are devices that use light - visible, ultra-violet or infra-red - signals and properties to store and retrieve data. They feature optical-to-electrical and electrical-to-optical...

Merkle Tree

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Merkle Tree - a hierarchy of blocks starting from data blocks at the bottom and progressing upwards to the root with a set of hash blocks. Hashes are unique...

RAG

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RAG (Retrieval Augmented Generation) is a technique for enhancing the accuracy and reliability of generative AI models with facts fetched from external sources. An Nvidia blog says RAG: "...

HSMR

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HSMR - Hybrid Shingled Magnetic Media Recording disk drives. Hybrid SMR drives have both a conventional non-shingled magnetic recording (Conventional PMR or CMR) region and an SMR region. HSMR...