Host options and settings for IBM XIV systems

You must use specific settings to identify SAN Volume Controller clustered systems as hosts to IBM® XIV® Storage System systems.

An XIV Nextra™ host is a single WWPN, so one XIV Nextra host must be defined for each SAN Volume Controller node port in the clustered system. An XIV Nextra host is considered to be a single SCSI initiator. Up to 256 XIV Nextra hosts can be presented to each port. Each SAN Volume Controller host object that is associated with the XIV Nextra system must be associated with the same XIV Nextra LUN map because each LU can be only in a single map.

An IBM XIV Storage System Type Number 2810 host can consist of more than one WWPN. Configure each SAN Volume Controller node as an IBM XIV Storage System Type Number 2810 host and create a cluster of IBM XIV Storage System systems that corresponds to each of the SAN Volume Controller nodes in the SAN Volume Controller system.

Table 1 lists the host options and settings that can be changed by using the IBM XIV Storage System and XIV Nextra Storage Management GUI.

Table 1. IBM XIV Type Number 2810 and XIV Nextra host options and required settings
Option	Data type	Range	IBM XIV Storage System Type Number 2810 and XIV Nextra default setting	SAN Volume Controller required setting	Notes
Type	Enum	FC/iSCSI	Not applicable	FC	The Type must be FC for SAN Volume Controller.
XIV Nextra map_set_special_type CLI command or IBM XIV Storage System Type Number 2810 special_type_set CLI command	Enum	default/hpux	default	default	This command is used by hpux hosts only. Do not use the command for SAN Volume Controller LUNs.
WWPN	int64	Any	Not applicable	Node port	For XIV Nextra, one host for each node port WWPN in the clustered system must be defined. For IBM XIV Storage System, Type Number 2810 one host port for each node port WWPN in the clustered system must be defined.
LUN Map	String	Any	Not applicable	Any	For XIV Nextra, each SAN Volume Controller host in the XIV Nextra system must be associated with the same LUN map because each LU can be only in a single map.