G A L A X Y N A S L X 5 C O N F I G U R A T I O N A N D S Y S T E M I N T E G R A T I O N G U I D E
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Section 3 Menu Functions
On both systems, create a new target with exactly the same:
Target Name (Example: iqn.2008-11:mirror01)
SCSI-ID (Example: dF5NU3iE8ZAcK2XQ)
LUN# (Example: 0)
Assign the failover volume as the LUN by clicking on the green "
+"
button.
Note:
Every time you disconnect a LUN from its target (clicking on "-" button) the
SCSI-ID and LUN# will be reset to the original default values. So, before clicking the
"+" button
again, please copy & paste the SCSI-ID and LUN# from the primary to the
secondary systems.
Make sure the primary and secondary system have an identical settings. Different settings can cause
some initiators to lose connection to the target during failover.
From the GUI menu of both systems, enter
SETUP
->
iSCSI Failover
->
[interface_designation]
and
configure the network interfaces to be used for failover purposes.
Please note that one of the interfaces in each system needs to hold the
virtual IP
. In
addition, it
needs to have two auxiliary connections. The interface with the virtual IP can
also serve as one of
the auxiliary connections. To enable virtual IP, select an interface
card and click on the
Enable
Virtual IP
box. Next, enter the virtual IP address, net mask
and the broadcast, followed by
apply
.
Please note virtual IP needs to be the same on both nodes. To set up an auxiliary connection, click
Use this network interface to communicate between the nodes
in the
Auxiliary connection
box,
followed by
apply
.
Important note on setting virtual IP addresses
Please set the virtual IP address in a different subnetwork than the physical IP address. If
you wish to have more than one pair of iSCSI failover systems, please set
each pair in a different
subnetwork. This limitation will be removed in the future.
For both systems, click
Enable failover functionality
in the
Failover configuration
box. On the
primary node, select
Primary node on localhost
and enter the secondary node IP and ping node IP,
while on the secondary node select
Secondary node on localhost
and enter the primary node IP.
The options available under the
Show advanced
tag are described in the Failover configuration help
text.
In the
iSCSI
Failover tasks
box on the primary node select the failover task (i.e. the volume replication
task you have set up earlier) and click on the right arrow button, then click on
apply
.
Click on
start
in the
Failover manager
box on the primary system.
Check the status in the
Failover status
box; all values must show as
OK
; also, the source and
destination volumes should be
Consistent
.
Connect to the mirror target with an iSCSI initiator using the virtual IP previously assigned.
Create a partition and format the iSCSI disk.
Test the failover function by clicking the
Manual failover
button in the
Failover manager
box on the
primary system.
