April 2016
Intermediate to advanced
368 pages
8h 6m
English
Content preview from Data Center Storage
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Appendix A
Storage Protocol Basics
Storage protocols, such as iSCSI, serial attached SCSI (SAS), serial advanced technology attachment (SATA), and Fibre Channel (FC), define how storage communicates to the outside world.
Since I have been involved with storage, the data rates have gone from 40 Mb/s (yes, megaBITs) to 6 Gb/s. I never cease to be amazed that the industry (often direct competitors) can collaborate to build systems that can reliably deliver 6 billion bits per second from point A to point B. And soon enough, industry standards that are currently on the drawing board, will grow to 40 billion bits per second.
Storage protocols have the same basic elements.
■ Physical layer (the wire, the connectors, the electrical signal)
■
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