LSISASX28 Datasheet | LSI Computer Systems

FEATURES 28 fully-independent SAS and SATA ports SSP, SMP, STP and SATA protocol support - SSP target and initiator - SMP target and initiator - STP target and initiator .. Supports 1.5 and 3Gb/s SAS and SATA data transfer rates LSI LOGIC’S SERIAL ATTACHED SCSI (SAS) EXPANDERS PROVIDE GREATER SCALABILITY, FLEXIBILITY, AND PERFORMANCE BENEFITS FOR NEXT GENERATION ENTERPRISE STORAGE PRODUCTS OVERVIEW The LSISASx28 is a 28-port 3Gb/s Serial Attached SCSI (SAS) expander with an Integrated ARM processor for Enclosure Management and extended SAS SMP functions. This device offers enhanced Enclosure Services such as drive © Port independent auto-negotiation Ports are non-denominational - Initiator or target connect Provides a low latency connection router with crossbar module to efficiently create and maintain connections Direct, Subtractive decode, and table routing methodologies supported Provides a scalable interface that supports up to 1024 SAS addresses Supports wide and narrow port configurations - Allows reuse of routing table resources across all of the PHYs posing a wide port - Allows any number of PHYs for wide port support I management and supports many options for implementing enclosure management, including a backward patible interface to an external processor using existing code or implementing the internal processor using SSP target. Phy-based zoning is also supported for network storage security applications. The LSISASx28 expander is pliant with the ANSI Serial Attached SCSI specification and supports SATA as defined in the Serial ATA: High Speed Serialized AT Attachment and the Serial ATA II: Port Selector Specification. SAS benefits include improved performance, simplified cabling, smaller connectors, a lower pin count, and lower power requirements. In addition, SAS leverages an electrical and physical connection interface that is patible with SATA technology. The interface patibility allows for customer flexibility in drive...