SANRAD manual Re-routing Storage Access with Off-line V-Switch

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.

Vol 1	iSCSI	iSCSI	Vol 2
	initiator	initiator
IP1,Target 1	Host 1	Host 2	IP2,Target 2

Cloud

IP SAN

IP1-inactive IP2-inactive

IP2-active IP1-active

V Switch 1 V Switch 2

iSCSI Target 1	iSCSI Target 2
wwui1	wwui2
Vol 1	Vol 2
LU0	LU0
	JBOD
Disk 1	Disk 2

Disk 3 Disk 4

10268

Figure 33. Re-routing Storage Access with Off-line V-Switch

74 SANRAD V-Switch User Manual