Also in microcode Release 8.3, a new set of Cluster commands ( mkcluster ,  lscluster ,  showcluster , and  rmcluster ) allows you to use DS CLI to create clusters to group hosts that  have the same set of volume mappings, map/unmap volumes directly to these clusters, or  both. These new commands were added to provide consistency between the GUI and DS  CLI. The GUI had previously implemented these commands in Release 8.2. Additional  information can be found in “Creating open system cluste rs and hosts” on page 324. Example 12-52 shows the creation of a single host connection that represents one HBA in the  example AIX host. Use the  -hosttype  parameter to include the host type that you used in  Example 12-47 on page 412. Allocate it to volume group V11. If the SAN zoning is correct,  the host will be able to see the LUNs in volume group V11. You can also use  -profile  instead of  -hosttype . However, this method is not a preferred  practice. The use of the  -hosttype  parameter starts both parameters ( -profile  and  -hosttype ). In contrast, the use of  -profile  leaves the  -hosttype  column unpopulated. The option in the  mkhostconnect  command to restrict access only to certain I/O ports is also  available by using the  -ioport  parameter. Restricting access in this way is unnecessary. If  you want to restrict access for certain hosts to certain I/O ports on the DS8880, perform  zoning on your SAN switch.  Chapter 12. Configuration with the command-line interface  415 Example 12-52 Create host connections by using mkhostconnect and lshostconnect dscli>  mkhostconnect -wwname 100000C912345678 -hosttype pSeries -volgrp V11 AIX_Server_01 CMUC00012I mkhostconnect: Host connection 0000 successfully created. dscli>  lshostconnect Name ID WWPN HostType Profile portgrp volgrpID ESSIOport ========================================================================================= AIX_Server_01 0000 100000C912345678 pSeries IBM pSeries - AIX 0 V11 all host_1 Linux Server Offline cluster_2 dscli>  showhost host_1 Name host_1 Type Linux Server State Offline AddrMode scsimap256 Volumes 0 Host ports 0 I/O ports 32 (all) AddrDiscovery lunpolling LBS 512 Cluster cluster_2 dscli>  chhost -unassign host_1 CMUC00531I chhost: The host host_1 is successfully modified. dscli>  rmhost -quiet host_1 Host host_1 successfully deleted.