Sun has extended the interoperability of Sun StorEdgeTM Traffic
Manager by enabling support for multi-pathing failover and load
balancing use within the Windows 2003 server operating environment
(Standard, WEb and Enterprise editions) and making it interoperable by
providing load balancing across all paths to symmetric storage devices
within the IBM AIX 4.3.3 and IBM AIX 5.1 operating environments. In
addition, it is now supported as well for failover use with Sun
StorEdgeTM 9900 arrays and within the Microsoft Clustering Services
(MSCS) configurations. Mesh support for switches has been enhanced by
providing the capability to manage multiple data paths.
The benefits of these new enhancements include the quick, easy access
administrators now have to the state and path configuration of Sun disk
arrays and systems attached to the SolarisTM Operating System
(Solaris OS), Microsoft Windows (NT EE, 2000, 2003 server), IBM AIX,
and HP-UX operating environments through a common storage interface.
Load balancing between data paths enables the transmission of data
within the SAN over multiple paths. Data path fail-over and fail-back
to SAN-attached disks improve overall system availability. For the Sun
StorEdgeTM 3510FC, T3, and 6120 arrays, a "least-used" algorithm is
used; essentially, when an IO is issued, it is sent down the data path
with the lowest usage rate. For the Sun StorEdge 9900 series, an "LBA
hashing" algorithm will be used in the next release, which is expected
during March/April 2004.
The support provided for multiple Sun disk arrays and disk system types
enables SAN-attached host servers to access LUNs from entry level to
data center instead of forcing customers to segregate which server
talks to which array/system. This feature improves both storage
utilization and management overhead cost efficiencies.
Sun StorEdge Traffic Manager software 3.1 may not be used to provide
redundant boot volumes, nor may the Host Bus Adapters (HBAs) used with
volumes managed by Sun StorEdge Traffic Manager software be used for
booting the servers. In addition, two supported Fibre Channel (FC) HBAs
of the same type and firmware level must be installed in the supported
server prior to installing Sun StorEdge Traffic Manager software
The product is licensed in increments of 1, 5 and 25 RTUs; one RTU
license must be purchased for each server on which the Sun StorEdge
Traffic Manager software multi-pathing FC driver is to be installed.
With the dynamic database configuration, feature, an administrator is
no longer required to manually add a new storage device. Instead, the
Sun StorEdge Traffic Manager software automatically recognizes the
storage device and dynamically adds it to the Sun StorEdge Traffic
Manager software database without requiring any manual intervention on
the part of the administrator.
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