HP 316095-B21 - StorageWorks Edge Switch 2/24 Note de mise à jour - Page 5

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HP 316095-B21 - StorageWorks Edge Switch 2/24 Note de mise à jour
Consider the impact of the following limits when planning the fabric:
•
Fabric elements—Each fabric element is defined by a unique domain ID that ranges between
1 and 31; therefore, the theoretical limit of interconnected Directors in a single fabric is 31.
The supported limit of interconnected switches in a single fabric is 24. Because this number is
subject to change, contact your HP-authorized service representative for the current number of
interconnected switches supported in a single fabric.
•
Inhomogeneous fabric—To determine if interoperability is supported for a product, or if restrictions
apply, see the product publications or contact your HP-authorized service representative.
•
Number of interswitch links (ISLs)—The maximum supported number of ISLs is 75% of installed
ports for the Director 2/64, and 100% of installed ports for the Director 2/140. The maximum
supported number of ISLs for Edge Switches is all available switch ports. For redundancy, at least
two ISLs should connect any two Edge Switch or Director-class fabric elements. Because this
number is subject to change, contact your HP-authorized service representative for the current
number of ISLs supported for each Director or Edge Switch.
•
Hop count—The Fibre Channel theoretical limit of ISL connections traversed (hop count) in a
single path through a fabric is seven. The maximum supported hop count in a single path through
a fabric is three. Because this number is subject to change, contact your HP-authorized service
representative for the current hop count supported by a single fabric path.
The hop count is equal to the number of ISL connections traversed in a single path, not the total
number of ISL connections between devices.

Cable requirements

Consider the following switch cable requirements.
NOTE:
Optical cables for Director and Edge Switch products must be ordered separately.
•
For cables measuring up to 500 meters (1 Gb/s) or 300 meters (2 Gb/s), use multimode Fibre
Channel cables. For longer cables, use single-mode Fibre Channel cables.
•
Multimode optical cables are connected to short-wave optical transceiver modules in a switch.
Single-mode optical cables are connected to long-wave optical transceiver modules in a switch.
Multimode cables should use 50/125 optical fibers, and single-mode cables typically use 9/125
optical fibers for distances up to 10 km.
•
Verify that connectors interfacing with the Director or Edge Switch products use LC duplex
connectors with a PC finish. In addition, the connector at the opposite end of the cable must be of
either LC or SC type, depending on the requirements of the connected device.

Operating systems

For a list of supported operating systems, see
switches.html.
Languages
English
http://h18006.www1.hp.com/storage/saninfrastructure/
Director and Edge Switch release notes
5