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74 SANRAD V-Switch User Manual
In Figure 33, V-Switch 1 has gone off-line. V-Switch 2 activates V-Switch 1’s
IP address and takes over exposure of Volume 1 to Host 1, represented by
the orange dashed line.
Host 1 continues to access Volume 1 through the same IP address as it did
before its V-Switch went off-line. Host 1 has no way of knowing that its
regular V-Switch is off-line. Host 1’s storage performance is not impacted
by the off-line V-Switch.
10268
Cloud
IP SAN
IP1-inactive
IP2-inactive
IP2-active
IP1-active
Tower box
Host 2
iSCSI
initiator
Vol 2Vol 1
Tower box
Host 1
iSCSI
initiator
V Switch 1 V Switch 2
Disk 1 Disk 2
Disk 4Disk 3
iSCSI Target 2
wwui2
iSCSI Target 1
wwui1
Vol 2
LU0
Vol 1
LU0
IP1,Target 1 IP2,Target 2
JBOD
Figure 33. Re-routing Storage Access with Off-line V-Switch