Creating a network server host adapter

A network server host adapter (NWSH) object must be created for each IBM® i iSCSI target port.

Notes:

If you are using the IBM i iSCSI Solution Work Sheets PDF on the IBM i iSCSI Solution Guide Web page, use the following work sheets to help you do these tasks:
- IBM i iSCSI target network server host adapter
- IBM i TCP/IP interface for iSCSI software target NWSH
- IBM i line description for iSCSI software target NWSH
The network server host adapter and the remote system configuration define IP address information for opposite sides of the iSCSI network. When connected by a simple, switched network, the following rules apply:
- The SCSI IP addresses in these two objects that are connected by a switch must be in the same subnet. For example, with IP addresses of the form a.b.x.y and 255.255.255.0 subnet masks, a.b.x must be the same value for both objects.
- The LAN IP addresses in these two objects that are connected by a switch must be in the same subnet.
- If you use CL commands to create the network server host adapter or remote system configuration, set the gateway elements to *NONE.

Start of change To create an NWSH, follow these steps: End of change

Determine the IBM i hardware resource name that was assigned to the iSCSI target adapter port. For more information, see Determining the hardware resource name for an iSCSI target adapter.
Select Integrated Server Administration from IBM Navigator for i.
Select New Network Server Host Adapter.
Click Continue on the Select Base Object page.
On the General tab:
1. Enter the NWSH device Name and Description.
2. Select the Hardware resource.
  - Select Virtual if your iSCSI target adapter is an Ethernet NIC.
  - Select the resource name that was determined in step 1 if your iSCSI target adapter is an iSCSI HBA.
3. Optional: Select Online at IPL if your iSCSI target adapter is an iSCSI HBA and you want it to automatically start when IBM i starts.
  Note: If your iSCSI target adapter is an Ethernet NIC, the equivalent function is accomplished by setting the corresponding TCP/IP interface to automatically start when TCP/IP is started on IBM i.
4. Optional: Select the Object authority. You can use the default value Change.
On the Local (Target) Interface tab:
1. Select the cable connection type. If the hardware is physically connected to an Ethernet switch, you can use the default value Network.
2. Specify the remaining values based on iSCSI target adapter type.
  - For an iSCSI HBA:
    1. Enter a Subnet mask.
    2. Enter a SCSI interface Internet address.
    3. Enter a LAN interface Internet address.
  - For an Ethernet NIC:
    
    Select an IBM i TCP/IP interface for the SCSI interface Internet address.
    Tip: If you did not previously create an IBM i TCP/IP interface and corresponding line description for your iSCSI target adapter, click the New button to create them now:
    1. For TCP/IP interface:
      
      Enter an Internet address, Subnet mask and Description.
      
      Select Start this TCP/IP interface every time TCP/IP is started if you want the new NWSH to start automatically.
    2. For Line description to use for the TCP/IP interface:
      
      If the line description exists, select it from the list.
      
      Otherwise, enter the remaining values to create a line description.
      Enter a Name and Description.
      
      Select the Hardware resource for your iSCSI target adapter port that was determined in step 1.
      
      Set the Maximum frame size.
    3. Click Create.
Click OK.

Tip: If you want to use a CL command, see:

Work with Device Descriptions (WRKDEVD) (use WRKDEVD *NWSH)
Create Device Desc (NWSH) (CRTDEVNWSH)
Work with TCP/IP Network Sts (NETSTAT) (use NETSTAT *IFC)
Configure TCP/IP (CFGTCP)
Add TCP/IP Interface (ADDTCPIFC)
Work with Line Descriptions (WRKLIND)
Create Line Desc (Ethernet) (CRTLINETH) (use parameters: MAXFRAME(8996) CMNRCYLMT(1 0))