HP Surestore 64 FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availabil - Page 143
to storage device, through ISL
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Physical Planning Considerations The figure illustrates two Director 2/64 directors connected by two ISLs. Three servers use the ISLs to communicate with two storage devices. Without trunking, servers 1 through 3 route Fibre Channel traffic to director B without regard to any data rates. A possible scenario is that servers 1 and 2 route high data rate traffic through ISL 1 to storage device 1 (ISL oversubscription) and server 3 routes low data rate traffic through ISL 2 to storage device 2 (ISL undersubscription). SAN High Availability Planning Guide 143
Physical Planning Considerations
143
SAN High Availability Planning Guide
The figure illustrates two Director 2/64 directors connected by two ISLs. Three
servers use the ISLs to communicate with two storage devices. Without trunking,
servers
1
through
3
route Fibre Channel traffic to director B without regard to any
data rates. A possible scenario is that servers
1
and
2
route high data rate traffic
through ISL
1
to storage device
1
(ISL oversubscription) and server
3
routes low data rate traffic through ISL
2
to storage device
2
(ISL undersubscription).