IBM z Systems running the IBM z/VSE operating system
You can use Fibre Channel attachments
to connect the system to IBM z Systems servers (hosts) that are running
the IBM z/VSE operating system. The z/VSE operating system can operate
in a logical partition (LPAR) and in an IBM z/VM guest environment.
Installing and configuring the HBA on z Systems hosts
The host bus adapters (HBAs) for z Systems servers must be ordered as features. The HBAs are either factory-installed when you order a new system or installed into an existing system by a service representative.