- Sun Storage Virtual Tape Library VTL User Guide

96267 • G Chapter 2 Understanding VTL Zoning 17
Portzoning(hardzoning)
Ahard‐zonedSANmapsinitiatortotargetusingaphysic al portaddress.Thisport‐
to‐portzoningestablishe safixed,phy sic al routethroughtheSAN.So,sinceeach
SANzonecancontainonlyoneinitiatorandon etarget,youmustprovidetwozones
foreachinitiatingclient.Th efigurebelow
showsahard‐zonedSANbeforeVTL
failover:
Astheabovefigureshows:
■ onezonede fines the pathtotheprima ryVTLservernode
■ theotherzonedefinesthepathtothestandbyserver.
Z
o
n
e
A
T
I
Client
SAN
Failed VTL server node
W
W
P
N
2
*
T
T
Active VTL server node A
Zone B
I
Client B
WWPN4
WWPN6
I
Active VTL server node B
Zone A
T
I
I
Client A
Active VTL server node A
T
I
Standby VTL server node A
SAN
port2
port1
port3
Zone B
I
Client B
port5
port4
port6
Active VTL server node B
Standby VTL server node B
Z
o
n
e
C
Z
o
n
e
D
WWPN2