This video explains the basics of Redundant Array of Independent Disks. RAID is the most common method or organizing hard disks so that data redundancy, and data distribution can happen. An understanding of RAID is necessary to understand card data security issues.
There is a lot of confusion in the difference between Storage Area Network (SAN) and Network Attached Storage (NAS). This presentation helps to clear it up. The design decides how in PCI DSS card data gets transmitted, and stored. SAN produces encryption issues under PCI DSS, a topic to be tackled later.
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