11.6.6 Setting the fibre channel port protocols for IBM Z attachment 11.6.7 Easy Tier support Assign Volume to Drive Class 350  IBM DS8880 Architecture and Implementation You can assign the volume to an Easy Tier drive class, or specify a tier that the volume should  not use. Select a  Volume , then click  Assign to Drive Class  as shown in Figure 11-111 on page 351.  A window with options based on the drive classes that are in the pool opens. If you select a  drive class that is different from the drive class that is in use by the volume, Easy Tier moves  the volume to the new drive class. The following options are available, depending on the drive  classes that are in the pool: For a IBM Z host to access assigned CKD volumes, the host must connect to the DS8880 HA  over Fibre Channel. The protocol of the host adapter port must be set to FICON.  To set the fibre channel port protocols of the fibre channel ports that the host uses to  communicate with the DS8880, complete these steps:  1. In the System window, click  Actions  Modify Fibre Channel port protocols .  2. Select one or multiple ports to modify and click  Actions  Modify .  4. Click  Modify  to set the topology for the selected fibre channel ports as shown in  Figure 11-110. 3. The Modify Protocol for the selected Ports page opens. Select the  FICON  protocol.  GLYPH<SM590000> Flash Tier 0: Assign the volume to the Flash Tier 0 (previously HighPerFlash). GLYPH<SM590000> Flash Tier 1: Assign the volume to the Flash Tier 1 (previously HighCapFlash). GLYPH<SM590000> Flash Tier 2:Assign the volume to the Flash Tier 2. GLYPH<SM590000> Enterprise: Assign the volume to the enterprise (SAS 10-K or 15-K RPM disk drives) tier. GLYPH<SM590000> Nearline: Assign the volume to the Nearline (SAS 7.2-K RPM disk drives) tier. GLYPH<SM590000> Exclude HDD: Exclude the volume from the enterprise or Nearline tiers. GLYPH<SM590000> Exclude Nearline: Exclude the volume from the Nearline tier. Figure 11-110 Modify Fibre Channel port protocols