Hp EVA Array iSCSI Connectivity Option Instrukcja Użytkownika Strona 95

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6 Setting up the iSC SI Initiator for
multipathing
This chapter contains the following topics:
Overview, page 95
Conguring multipath with Windows iSCSI initiator,page100
•Conguring multipath with the VMware iSCSI initiator, page 112
Conguring multipath with the Solaris 10 iSCSI initiator,page116
Conguring multipath with the OpenVMS iSCSI initiator, page 123
Device Mapper Multipath E nab lement Kit for HP StorageWorks Disk Arrays, page 126
Overview
The mpx100/100b supports iSCSI multipath in a single or dual mpx100/100b conguration with
asingleEVA
storage system.
As with sin
gle-path mpx100/100b congurations, presenting EVA LUNs to an iSCSI Initiator is a two-step
process. F
irst the EVA LUN must be presented to the mpx100/100b, and then it must be presented from
the mpx100/100b to the iSCSI Initiator.
Because the mpx100/100b is bridging SCSI commands and data from the host to storage with iSCSI and
Fibre Channel, it is important to understand what multipathing m eans from each technology's perspective.
NOTE:
The examp
les in this section show direct connect congurations between the EVA and the mpx100/100b.
Note, how
ever, that iSCSI multipath is also supported in fabric connections.
IMPORTANT:
WindowsXPProfessionalisnotsupportedbyMicrosoft'sMultipathI/O(MPIO).
Understanding Fibre Channel multipathing for the mpx100/100b
EV A storage array perspective
The mpx100/100b has two FC ports, each having a unique WWPN. When connected to the EVA
storage system, these WWPNs behave like any other WWPN accessing the array. When the iSCSI host
entry is created in HP Command View, all FC port WWPNs are included in the iSCSI host properties.
The mpx100 / 100b FC ports do not necessarily have to be connected to the EVA storage controller to be
added to the iSCSI host entry. Upon iSCSI device discovery, HP Command View polls the mpx100/100b
for both FC port WWPNs and adds them to the iSCSI host entry FC port list.
If a s ingle mpx100/100b is discovered as an iSCSI controller (see Figure 42), both of its FC ports will
be included in the single HP Command View iSCSI host entry. If two mpx100's/100b's are discovered
(see Figure 43), the single HP Command View EVA iSCSI host entry contains four FC ports—two from
each mpx100/100b.
EVA iSCSI connectivity user guide
95
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