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XRS10L210IV Datasheet(PDF) 2 Page - Exar Corporation

Part # XRS10L210IV
Description  SERIAL ATA II: PORT SELECTOR
Download  37 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRS10L210IV Datasheet(HTML) 2 Page - Exar Corporation

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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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