Network Types
Most storage networks use the SCSI protocol for communication between servers and disk drive devices. A mapping layer to other protocols is used to form a network:
- ATA over Ethernet (AoE), mapping of ATA over Ethernet
- Fibre Channel Protocol (FCP), the most prominent one, is a mapping of SCSI over Fibre Channel
- Fibre Channel over Ethernet (FCoE)
- ESCON over Fibre Channel (FICON), used by mainframe computers
- HyperSCSI, mapping of SCSI over Ethernet
- iFCP or SANoIP mapping of FCP over IP
- iSCSI, mapping of SCSI over TCP/IP
- iSCSI Extensions for RDMA (iSER), mapping of iSCSI over InfiniBand
Storage networks may also be built using SAS and SATA technologies. SAS evolved from SCSI direct-attached storage. SATA evolved from IDE direct-attached storage. SAS and SATA devices can be networked using SAS Expanders.
Read more about this topic: Storage Area Network
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