IBM DR550 - Manual (Page 43)

IBM System Storage DR550 Version 3.0 ------17 March 2006 Page 43
IBM Storage Systems Copyright © 2006 by International Business Machines Corporation
Dual Node Configurations
Boot is used to indicate the primary connection. There is one Ethernet connection from both
engine_1 and engine_2. Standby is provided as a backup connection in the event of a network
failure to provide an alternate network path.
The diagrams below show the connections to be made from each engine (P5 520) to the customer’s
pair of 10/100 or gigabit Ethernet switches.
For connecting to a gigabit Ethernet network, the boot (primary) connections are made from the first
port of the 2 Port Gigabit Ethernet SX PCI-X adapters in engine_1 and engine_2 to the customer’s
gigabit Ethernet switch (Switch1) .Switch 1 will carry network traffic in a normal situations. The
standby (backup) connections are made from the second port of the 2 Port Gigabit Ethernet SX PCI-
X Adapter installed on engine_1 and engine_2 to the customer’s gigabit Ethernet switch (Switch2).
Switch2 will carry the network traffic to the DR550 when there is a network failure associated with
connections to Switch1. All gigabit Ethernet connections are to use fiber optic cabling.
Dual Node
10/100/1000 (Copper) Ethernet Connectivity
CtrlB CtrlA
DS4100#2 (in Rack B)
10/100/1000 EN Switch #1
(customer's network)
10/100/1000 EN Switch #2
(customer's network)
Customer supplied
Ethernet cables
IBM supplied Ethernet
crossover cables IBM supplied Ethernet
crossover cables
P5 520 #1 (DRS_Engine_1) P5 520 #2 (DRS_Engine_2)
CtrlB CtrlA
DS4100#1 (in Rack A)
HACMP boot connection
HACMP boot connection
HACMP standby - customer supplied cables
Customer supplied
Ethernet cables
10/100/1000 (T6)
HMC1
HMC2
System
board
10/100/1000 (T5)
USB0 (T7)
USB1 (T8)
10/100/1000 (T6)
HMC1
HMC2
System
board
10/100/1000 (T5)
USB0 (T7)
USB1 (T8)
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