HP 3000 Enterprise Virtual Array - Manual (Page 94)

2. Edit the new file and add a list of the IP names or addresses of the iSCSI target ports that
should be probed for available storage devices. The header included in this file defines the
proper format for these addresses. The manual target list is automatically loaded when the
iSCSI Initiator is started. By default, changes to this file will not take effect until the system is
rebooted or until the initiator is stopped and restarted.
3. To manually force the initiator to recognize additions to the manual target list while the initi-
ator is running, issue the following command:
$ mcr iscsi$control_program manual
Target ports that have been added to this file since the initiator was started will be added to
the list of target ports that are periodically scanned by the initiator. Note that target ports that
have been removed from this file will not be removed from the initiator's scan list until the
system is rebooted or the initiator is stopped and restarted.
NOTE:
Regardless of whether IP addresses or IP names are used in the manual target data file, every
iSCSI target port must be known to TCP/IP. The command TCPIP SHOW HOST can be used
to determine if the target port is known to TCP/IP. The host can be added to the local TCP/IP
host database with the command TCPIP SET HOST. A target port not known to TCP/IP will
not be probed by the iSCSI Initiator.
NOTE:
The default TCP/IP port used for iSCSI traffic is 3260. If a non-default port is to be utilized,
the addresses listed in the manual targets file must include the port number. The header
included in this file defines the format that must be used when including a port number. There
is no need to include the port number if the default will be used. Additionally, if a non-default
port number is to be utilized, the iSCSI ports on the mpx100 must be configured with that
non-default port number.
NOTE:
The OpenVMS Software-Based iSCSI Initiator does not currently support IPv6. All IP addresses
must be IPv4.
• iSNS target discovery
The Internet Storage Name Service (iSNS) protocol provides a target discovery mechanism similar
to the discovery services found in Fibre Channel. Among the capabilities provided by iSNS is the
ability for storage targets to register with an iSNS server. Acting as iSNS clients, initiators are
able to query this server to retrieve a lost of potential targets. The initiator can then use this list to
query the individual targets to find its storage devices.
The use of iSNS requires the availability of an iSNS server that is network accessible by both the
storage targets and the initiators (OpenVMS hosts). Currently, the Microsoft iSNS Server is the
only iSNS server supported for use with the OpenVMS Software-Based iSCSI Initiator.
To use iSNS target discovery, both the initiators and targets must be properly configured with the
IP address of the iSNS server.
Setting up the iSCSI Initiator and storage 94