SANRAD V-Switch manual Access Rights per Identity-Target Pair, 112

wwui1

wwui2

wwui3

wwui4

wwui5

wwui6

wwui7

wwui8

wwui9

wwui10

								iSCSI Target 1	Vol 1
							e
					rit
			W					wwui21
		ad-
	e
Ident A	R
		R
		e
			a
			d						Vol 2
				O
				-		n
							l
							y	iSCSI Target 2	Vol 3
								wwui22
Ident B	Re
		a
			d-
				W					Vol 4
					rit
							e	iSCSI Target 3
								wwui23
Ident C	Rea		d-						Vol 5
			W
					ri			iSCSI Target 4	Vol 6
						te
								wwui24

10152

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.

wwui1

wwui2

wwui3

wwui4

wwui5

wwui6

wwui7

wwui8

wwui9

Ident A

Ident B

	R
		e
			a
			d
				-
				O
				n
				l
					y
				e
				it
				r
			W
			-
		d
	a
e
R

iSCSI Target 2

wwui22

Vol 2 Vol 3

wwui10

10154

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

112 SANRAD V-Switch User Manual