Before the storage system is connected to the hosts, you must configure the host groups or iSCSI targets for the new hosts and set the host mode and host mode options (HMOs) for each host group/iSCSI target. When you connect multiple hosts of different platforms to a single port, you must group hosts connected to the storage system by host groups/iSCSI targets that are segregated by platform. For example, if VMware, Windows, and Solaris hosts will be connected to a single port, you must create a host group/iSCSI target for each platform and set the host mode and HMOs for each host group/iSCSI target. When the storage system is connected to the hosts, you will register the hosts in the appropriate host groups/iSCSI targets.
While a host group can include more than one WWN, you should create one host group for each host adapter and name the host group the same as the nickname for the adapter. Creating one host group per host adapter provides flexibility and is the only supported configuration when booting hosts from a SAN.
For instructions on setting the host modes and HMOs, see the Provisioning Guide for the storage system. For lists of the host modes and HMOs for the storage systems, see Host modes and host mode options.
- Before setting any HMO, review its functionality carefully to determine whether it can be used for your configuration and environment. If you have any questions or concerns, contact your Hitachi Vantara representative.
- Changing host modes or HMOs on a storage system that is already installed and attached to the host is disruptive and requires the host server to be rebooted.