Parallel SCSI has been dominanting the enterprise with its reliable and robust standard protocol together with its solid architecture for more than twenty years. However, the ever increasing in demanding of a better performance and larger capacity from today applications have gave birth to a new standard known as Serial Attached SCSI (SAS). The new standard transforms the current proven parallel SCSI technology into a Serial Attached SCSI with a serial interface which results in a much greater scalability and increased in performance.
Rancho SCSI Expanders is fully compliant with ANSI SAS standards with benefits including lower power requirement, simplier cabling with smaller connector, backward compatible with SATA, and supports transfer rate upto 3Gb/s. Rancho SAS expander provides the capability of connecting upto 36-port for multiple targets and initiators suitable for today storage applicatons.
Click here http://www.scsita.org to learn more about SAS technology.
36-Port SAS Expander
- Supports 36 fully independent SAS and SATA ports
- Supports SSP, SMP, STP and SATA protocol
- Port independent auto negotiation
- Provides low latency connection router
- Supports direct, subtractive, and tabel routing
- Provides 1024 SAS routing addresses
- Supports wide and narrow port configurations
- Phy based zoning for system security
- Suports drives spin-up sequencing per phy basis
- Front and back LED status indicators
- UART support for debugging
- Configures as Edge or Fanout expander
Applications
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Figure 1 - SAS Fanout topology. |
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Figure 2 - flexible SAS link topology (left) with path redundancy (right) |
Rancho's SAS expander is ideal for high availability and scalable server clustering environments and front end storage subsystems used in clusers, SANs, and NAS environements. Rancho's SAS expander ideal for data center and Storage Area Networks, leveraging existing SCSI infrasturture for investment protection and ease of migration and implementation.