HP 316095-B21 - StorageWorks Edge Switch 2/24 Примечание к выпуску - Страница 5

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Number of interswitch links (ISLs)—The maximum supported number of ISLs is

75% of installed ports for the Director 2/64, and 50% 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 per Director or Edge Switch.

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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

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 multi-mode

Fibre Channel cables. For longer cables, use single-mode Fibre Channel cables.

Multi-mode 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. Multi-mode 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.

Important information

This section describes important information related to the Director or Edge Switch

product.

Minor code enhancements and ﬁxes in ﬁrmware 08.01.00

This release of ﬁrmware 08.01.00 incorporates some minor code enhancements and

ﬁxes, and is not a mandatory upgrade, though HP recommends that all Directors and

Edge Switches be upgraded to this version of ﬁrmware.

Advanced Fabric Diagnostics enhancements

The following enhancements have been made to Advanced Fabric Diagnostics features:

Director and Edge Switch release notes