Sun Microsystems FC Switch-8 and Switch-16 816-0830-12 - Manual (Page 32)

2 Sun StorEdge Network FC Switch-8 and Switch-16 Installation and Configuration Guide • October 2001
Fabrics and name services, configuring and changing zones on switches, converting
to long device names used by Fabrics and Sun StorEdge Traffic Manager, and using
on-demand device creation.
New Features, Benefits, and Products
This version of the Sun StorEdge SAN Product provides new features and benefits. It
delivers a larger high-performing SAN, with native Fabric host connectivity,
improved manageability, an integrated multipathing solution (Sun StorEdge Traffic
Management software), and support for a variety of new hardware and software
products.
New Device Names
One of the most noticeable new features that require additional planning is new,
longer, device names. SANs and multipath storage devices require the devices to be
addressed by device-specific static global identifiers, and not by physical port IDs,
which are dynamic in nature and are different across different host’s systems.
Traditionally, Solaris has named storage devices based on the controller, target ID
and logical unit number (LUN) of the device. When large SANs with multiple paths
to large storage arrays are constructed, this naming convention could lead to
thousands of targets per controller and storage identified more than once by
different controllers and targets. The new method incorporates the World Wide
Name of the device into the device name used by the host.
The new names provide the benefit of uniquely identifying storage devices to the
host. When using the Sun StorEdge Traffic Manager, a device with multiple
connections to a host is known to that host by one name.
Note – This feature comes into play only if you use Sun StorEdge Traffic Manager or
Fabric-attached storage devices.
Examples
Old device path:
/devices/pci@f,4000/pci@4/SUNW,qlc@4/fp@0,0/ssd@3,0
New device path: