Configuration: About Your Host 959Configuration: About Your HostConfiguring Host AccessModular Disk Storage Manager (MDSM) software is comprised of multiplemodules. One of these modules is the Host Context Agent. The host contextagent is installed as part of the MDSM installation and runs continuously inthe background.If the host context agent is running on a host, the host and the host portsconnected from it to the storage array are automatically detected by MDSMand are displayed on the Mappings tab in the Array Management Window(AMW). For more information on the Mappings tab, see "Using theMappings Tab" on page 96.NOTE: The host context agent is not dynamic and must be restarted afterestablishing iSCSI sessions for MD3200i Series storage arrays to automaticallydetect them.If the hosts are not detected automatically, you can use the Define HostWizard to define the hosts that access the virtual disks in the storage array.Defining a host is one of the steps required to let the storage array knowwhich hosts are attached to it and to allow access to the virtual disks. Formore information on defining the hosts, see "Defining a Host" on page 96.To enable the host to write to the storage array, you must map the host to thevirtual disk. This mapping grants a host or a host group access to a particularvirtual disk or to a number of virtual disks in a storage array. You can definethe mappings on the Mappings tab in the AMW.On the Summary tab in the AMW, the Hosts & Mappings area indicates howmany hosts are configured to access the storage array. You can clickConfigured Hosts in the Hosts & Mappings area to see the names of thehostsA collection of elements, such as default host groups, hosts, and host ports,are displayed as nodes in the Topology pane of the Mappings tab in theAMW.The host topology is reconfigurable. You can perform the following tasks:
