HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0204, January 2010)

Figure 12 Zoning between two servers and two quads of a DPM pair
.
Figure 13 illustrates zoning between two servers with two dual-port HBAs and the first two quads of
a DPM pair with the servers being zoned to the same DPM front-end target ports.
Figure 13 Zoning between two servers with two HBAs and two quads of a DPM pair
.
DPM-storage zoning
A DPM-Storage back-end zone is used to give the DPM access to the back-end storage used to create
virtual disks managed by HP SVSP. A back-end path between the DPM and back-end storage consists
of a single DPM back-end initiator port and a single port on a back-end storage device controller.
The following rules must be applied when creating DPM-Storage zones:
• Each DPM back-end initiator port is zoned to exactly one port from each controller on a back-end
storage device. This allows for back-end failover capabilities if a storage device port or the con-
troller fails.
• Each DPM back-end initiator port is zoned to a different port on a given back-end storage device
controller. Zoning multiple DPM ports to a single storage device port leaves the configuration
vulnerable to a loss of availability if the storage port fails.
• Each storage device port is zoned to exactly one back-end initiator port from each DPM. Zoning
to a port from each DPM allows for back-end failover capabilities if the active DPM fails or the
particular active back-end port fails.
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