HyperSCSI

HyperSCSI defines an efficiently designed, not routable from the field of storage networks. Transmission is via Gigabit Ethernet and can SCSI data streams with about 100 MB / s ( net) transfer. In contrast to UltraSCSI -320, which only cables with max. 15 m supported, can at HyperSCSI by fiber several kilometers, or 100 m, are bridged ( using TP copper cable). Since HyperSCSI usage of TCP / IP, it is more efficient than iSCSI and ATA over Ethernet or more Fibre Channel comparable. Since both HyperSCSI is in direct competition with the older stable and long well-established Fibre Channel, and also to the well-established iSCSI, but in practice it does not provide significant benefits, its market opportunities can only be assessed as low. This also competing ATA over Ethernet, however, at least has the marketing advantage of low-cost technology, the HyperSCSI but does not adhere.

HyperSCSI transmits data in the form of Ethernet frames, and to dispense with the use of higher standing protocols such as IP, UDP or TCP. Advantage of the Ethernet Base - compared to Fibre Channel - is that use is made of the widely used Ethernet networking standard and the same technologies and components (cabling, switches, etc.) to come in the storage network is used, as in the rest of the network. The waiver of TCP / IP also ensures better efficiency than iSCSI. However, the data transmitted from HyperSCSI Ethernet packets are not routable and therefore can be a Layer 2 network can not leave, so the use of HyperSCSI mainly on local storage systems ( Storage Area Networks) remains limited. HyperSCSI is technically much simpler than the closely related iSCSI and Fibre Channel quite similar. There is after all a Linux implementation on SourceForge (from 2003, for the 2.4.x kernel releases ), such as a Windows 2000 client implementation, but no ( major ) manufacturers use this protocol.

Similar standards

  • ATA over Ethernet: For ATA over Ethernet ATA / ATAPI packets are encapsulated in Ethernet. As with HyperSCSI but there is no encapsulation in TCP / IP, AoE is therefore not routable.
  • Fibre Channel: FC defines a non- routable protocol standard in the field of storage networks, designed as the successor to SCSI for high-speed transmission of large amounts of data. FC is not compatible with the Ethernet, it is a separate infrastructure (NICs, switches, etc. ) is required.
  • Fibre Channel over Ethernet: For Fibre Channel over Ethernet Fibre Channel packets are encapsulated in Ethernet. In contrast to iSCSI but there is no encapsulation in TCP / IP, this gave rise to low performance advantages, but FCoE is not routable.
  • Fibre Channel over IP over Fibre Channel IP to Fibre Channel packets are encapsulated in TCP / IP. FCoIP is therefore routable.
  • ISCSI ( SCSI over IP): With iSCSI, SCSI packets are encapsulated in TCP / IP. In contrast to HyperSCSI iSCSI is routable.
Encapsulation (networking)
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