HP P6300 HP P6300/P6500 EVA Installation Guide (5697-2485, September 2013) - Page 13

Number of paths required per initiator, Using Internet Storage Name Service (iSNS), Using iSCSI ports

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Figure 5 iSCSI initiator view of P63x0/P65x0 10 GbE iSCSI/FCoE module's target paths The FCoE initiators complete automated logins on all discovered paths, so verify that FCoE connectivity is established to both 10 GbE iSCSI/FCoE modules prior to presenting LUNs using HP P6000 Command View. Number of paths required per initiator After establishing the number of initiators, determine how many paths are required by each initiator. The number of connections per iSCSI controller is finite, and every initiator login constitutes a connection to the iSCSI modules or iSCSI/FCoE modules. In a multipath environment, HP recommends a minimum of one connection per module; high-performance applications may require full path connectivity to each iSCSI module. Using Internet Storage Name Service (iSNS) The 1 GbE iSCSI modules present two iSCSI targets (P63x0/P65x0 EVA controller 1 and controller 2), for a total of four targets to the pair of iSCSI or iSCSI/FCoE controllers. Each initiator, therefore, discovers two or four FC targets depending on the IP Ethernet configuration. The 10 GbE iSCSI/FCoE modules present one iSCSI target for each virtual port group (VPG) for a total of four. Each iSCSI initiator, therefore, discovers four times the number of FC targets. HP recommends that you use iSNS to present only the required iSCSI targets to the initiator. Using iSCSI ports When configuring the iSCSI module and iSCSI/FCoE module, HP recommends that you use all eight 1 GbE or all four 10 GbE ports for higher average performance and maximum initiator connectivity. When multiple initiators are configured, ensure that logins are spread across the target ports on either the iSCSI modules or iSCSI/FCoE modules. Security When configuring a secure IP storage network based on iSCSI, the Challenge Handshake Authentication Protocol (CHAP) is configurable on the iSCSI modules and iSCSI/FCoE modules. CHAP is a protocol used to authenticate the peer of a connection. It is based on the peer sharing a password or secret. Both single-direction (target) and mutual (bi-directional) CHAP are supported. The target iSCSI modules or iSCSI/FCoE modules can have a unique password for the one-way CHAP option. The iSCSI initiator can have a unique password for the bi-directional CHAP option with the target iSCSI modules or the iSCSI/FCoE modules. Plan your storage configuration 13

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Figure 5 iSCSI initiator view of P63x0/P65x0 10 GbE iSCSI/FCoE module's target paths
The FCoE initiators complete automated logins on all discovered paths, so verify that FCoE
connectivity is established to both 10 GbE iSCSI/FCoE modules prior to presenting LUNs using
HP P6000 Command View.
Number of paths required per initiator
After establishing the number of initiators, determine how many paths are required by each initiator.
The number of connections per iSCSI controller is finite, and every initiator login constitutes a
connection to the iSCSI modules or iSCSI/FCoE modules. In a multipath environment, HP
recommends a minimum of one connection per module; high-performance applications may require
full path connectivity to each iSCSI module.
Using Internet Storage Name Service (iSNS)
The 1 GbE iSCSI modules present two iSCSI targets (P63x0/P65x0 EVA controller 1 and controller
2), for a total of four targets to the pair of iSCSI or iSCSI/FCoE controllers. Each initiator, therefore,
discovers two or four FC targets depending on the IP Ethernet configuration. The 10 GbE iSCSI/FCoE
modules present one iSCSI target for each virtual port group (VPG) for a total of four. Each iSCSI
initiator, therefore, discovers four times the number of FC targets. HP recommends that you use
iSNS to present only the required iSCSI targets to the initiator.
Using iSCSI ports
When configuring the iSCSI module and iSCSI/FCoE module, HP recommends that you use all
eight 1 GbE or all four 10 GbE ports for higher average performance and maximum initiator
connectivity. When multiple initiators are configured, ensure that logins are spread across the
target ports on either the iSCSI modules or iSCSI/FCoE modules.
Security
When configuring a secure IP storage network based on iSCSI, the Challenge Handshake
Authentication Protocol (CHAP) is configurable on the iSCSI modules and iSCSI/FCoE modules.
CHAP is a protocol used to authenticate the peer of a connection. It is based on the peer sharing
a password or secret. Both single-direction (target) and mutual (bi-directional) CHAP are supported.
The target iSCSI modules or iSCSI/FCoE modules can have a unique password for the one-way
CHAP option. The iSCSI initiator can have a unique password for the bi-directional CHAP option
with the target iSCSI modules or the iSCSI/FCoE modules.
Plan your storage configuration
13