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112 SANRAD V-Switch User Manual
10152
wwui2
wwui1
wwui10
wwui9
wwui8
wwui7
wwui4
wwui3
Ident B
wwui6
wwui5
iSCSI Target 1
wwui21
iSCSI Target 2
wwui22
iSCSI Target 4
wwui24
iSCSI Target 3
wwui23
Ident A
Ident C
Ident B
Vol 1
Vol 4
Vol 2
Vol 3
Vol 5
Vol 6
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Figure 58. Access Rights per Identity-Target Pair
In Figure 58, Identity A is coupled with both Target 1 and Target 2. The
Identity A – Target 1 pair is assigned iSCSI initiator read-write access to
Target 1 volumes. The Identity A – Target 2 pair, however, is assigned
iSCSI initiator read-only access to Target 2 volumes.
When you assign an identity to a target, you give the identity a position,
beginning with 1 and increasing in number with increasing specificity of the
identity. A position is an identity’s rank in the V-Switch scan for an iSCSI
initiator – identity match. When the V-Switch scans the list of identities
coupled with a target, it starts with the highest position and stops with the
first iSCSI initiator – identity match. The V-Switch takes the first fit; not the
best fit.
10154
wwui2
wwui1
wwui10
wwui9
wwui8
wwui7
wwui4
wwui3
Ident B
wwui6
wwui5
iSCSI Target 2
wwui22
Ident A
Vol 2
Vol 3
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Figure 59. iSCSI Initiator in Two Different Identities
In Figure 59, iSCSI initiator WWUI8 is part of Identity A and Identity B. If
Identity A and Identity B are coupled with Target 2, iSCSI initiator WWUI8
will have two different access options to Volumes 2 and 3: read-write and