Isl Maximums - HP StorageWorks 4000/6000/8000 - Enterprise Virtual Arrays Reference Manual

Table 68 lists the maximums for switches with higher port counts.
Table 68 ISL maximums
Switch
McDATA 4 Gb SAN Switch for HP
p-Class BladeSystem
HP StorageWorks Director 2/64
HP StorageWorks Director 2/140
164 M-series switches and fabric rules
Total number of available user
ports
10
64
140
Number of E_Ports allowed
2
48
(75% of installed ports)
140