Data Storage - Memory/Storage Hierarchy

1 - About

A memory/storage hierarchy in computer storage distinguishes each level in the hierarchy by:

3 - Storage levels

There are three major storage levels

3.1 - Primary

Primary Storage:

  • the main memory system RAM and controller cards – may take hundreds of cycles, but can be multiple gigabytes. Access times may not be uniform, in the case of a NUMA machine.

3.2 - Secondary

Secondary storage and On-line mass storage principally Disk storage – millions of cycles latency if not cached, but very large

3.3 - Tertiary

Tertiary and Off-line bulk storage - several seconds latency, can be huge

4 - Documentation / Reference

data_storage/memory_hierarchy.txt · Last modified: 2018/06/08 14:53 by gerardnico