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XRS10L210 Datasheet(PDF) 2 Page - Exar Corporation |
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XRS10L210 Datasheet(HTML) 2 Page - Exar Corporation |
2 / 37 page EXSTOR - 1 XRS10L210 2 SERIAL ATA II: PORT SELECTOR REV. 1.04 STANDARDS COMPLIANCE The XRS10L210 is compliant with the following industry specifications: • Serial ATA, Revision 1.0a • Serial ATA II: Extensions to Serial ATA 1.0a, Revision 1.2 • Serial ATA II PHY Electrical Specifications, Revision 1.0 • Serial ATA II: Port Selector, Revision 1.0 • Serial ATA II: Revision 2.6 APPLICATIONS • Serial ATA Enclosures • Other Serial ATA link replicator applications • Buffers for externally connected links • High density storage boxes • RAID Subsystems APPLICATION EXAMPLE The XRS10L210 is ideally suited for use within an external drive enclosure as a means of providing redundant host access to ensure system availability and reliability. This application is shown in Figure 1. The XRS10L210 can be used in a combined SAS and SATA storage system. The mux is required in Active/ Active or Active/Passive fail over systems. In enterprise storage applications, Fibre Channel and SAS drives are known for a dual port architecture where commands can be sent to either port by different hosts or the same host. The dual ported drive allows two different RAID controllers to access the same drive. The major advantage of this architecture is that it provides systems with fail-over capability. These storage systems allow components of the systems to be changed or serviced while the IO is running. SATA drives are being deployed in the enterprise systems where they lack dual port capability. The lack of dual port SATA drives can be compensated for by using the XRS10l210 in which single port SATA drives can be converted into dual ported drives. Other applications for the XRS10L210 are in dual ported SAS/STP expanders, NAS servers, high availability, high density storage sub-systems and tape emulation market where SATA drives are used as the storage media. FIGURE 1. SYSTEM BLOCK DIAGRAM FOR XRS10L210 IN A DRIVE ENCLOSURE APPLICATION SAS EXPANDER SAS EXPANDER SAS XRT10L210 SATA SAS XRT10L210 SATA |
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