HP StorageWorks 4000/6000/8000 .HP StorageWorks SAN Design Reference Guide, Pa - Page 287

Fabric A1 Local WDM connection Fabric A1 Remote Fabric B1 Local WDM connection Fabric B1 Remote 25145b Figure 80 Fully redundant WDM configuration using two long-distance fiber optic links . The configuration in Figure 80 is high cost, but is fully redundant. HP supports the following third-party WDM products and configurations: • CWDM and DWDM systems supported by the switch vendors. • WDM devices that are configurable to a data rate of 1 Gb/s, 2 Gb/s, 4 Gb/s, 8 Gb/s, or 10 Gb/s • Up to 500 km at 1 Gb/s, over a WDM link (switch model dependent). On certain Fibre Channel switches, there may be reduced performance at this distance. See "Storage product interface and transport distance rules" on page 171. • Performance levels depend on the number of buffers available in the switch and the amount of application data. For information about HP-certified third-party WDM products, see "Certified third-party WDM, iFCP, and SONET products" on page 352. Extended fabric settings for Fibre Channel switches When extending fabrics with Fibre Channel long-distance transceivers or WDM, it is important to maintain the performance of ISL connections. See "Features" on page 100 for information about the B-series Extended Fabrics license. B-series switch settings An Extended Fabrics license is required for B-series switches when extending a fabric beyond 10 km. See the HP StorageWorks Fabric OS 5.3x administrator guide for B-series extended fabric switch settings, available at http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual& lang=en&cc=us&docIndexId=179111&taskId=101&prodTypeId=12169&prodSeriesId=1143936. NOTE: The HP C-series CWDM solution is not supported on B-series switches. See "Certified third-party WDM products" on page 353 for B-series supported WDM devices. SAN Design Reference Guide 287