https://community.hpe.com/t5/hpe-eva-storage/isl-links-qty-needed-determination/m-p/3404066#M9318 Hello all..<BR /><BR />As part of the configuration of a secound-redundant fabric in our SAN here.. I need some guidence on "How" to determine the proper number of ISL fiber runs to provide between our 2 new HP 32 port San Switch Options ( Brocade 3900 ).. Any help-advice appreciated..<BR />thanks,<BR />George Quist<BR /> Wed, 20 Oct 2004 08:03:23 GMT George Quist 2004-10-20T08:03:23Z https://community.hpe.com/t5/hpe-eva-storage/isl-links-qty-needed-determination/m-p/3404066#M9318 Hello all..<BR /><BR />As part of the configuration of a secound-redundant fabric in our SAN here.. I need some guidence on "How" to determine the proper number of ISL fiber runs to provide between our 2 new HP 32 port San Switch Options ( Brocade 3900 ).. Any help-advice appreciated..<BR />thanks,<BR />George Quist<BR /> Wed, 20 Oct 2004 08:03:23 GMT https://community.hpe.com/t5/hpe-eva-storage/isl-links-qty-needed-determination/m-p/3404066#M9318 George Quist 2004-10-20T08:03:23Z https://community.hpe.com/t5/hpe-eva-storage/isl-links-qty-needed-determination/m-p/3404067#M9319 That really depends on how much data you need to swap between switches, which will also determine if you need to buy the advanced trunking features as well...<BR /><BR />For simple SAN implementations...<BR /><BR />Rule of thumb, if you have the available ports... then you want a minimum of 2 ISL's between 2 switches. 1 for connectivity, another for redundancy. More than that and your really just wasting ports.<BR /><BR /><BR />Steven Wed, 20 Oct 2004 12:30:33 GMT https://community.hpe.com/t5/hpe-eva-storage/isl-links-qty-needed-determination/m-p/3404067#M9319 Steven Clementi 2004-10-20T12:30:33Z