Configuring the storage system

You need to configure the storage system so that the protocol you are using can access it. For example, if your environment uses FC, you must supply the host's WWPN and make sure the storage system is using a supported cfmode. For environments using the iSCSI protocol, you must supply the names of the initiator nodes and, if you are using CHAP, set up the user names and passwords on the storage system.

Before you begin

Ensure that you have the host's WWPNs that you recorded when you installed the FC HBAs or the iSCSI initiator nodes that you recorded.

Note: If you are using Red Hat Enterprise Linux 6.0 or later, NetApp recommends that you run Data ONTAP 8.0.1 or later on the storage systems connected to the host. That way you can use the Block Limits VPD page (0xb0) information. Using the Block Limits VPD page helps maintain block alignment, which leads to enhanced I/O performance on the NetApp LUN.

About this task

This checklist steps you through the requirements for making sure your storage system is correctly set up.

Steps

Ensure that the protocol you are using (FC or iSCSI) is licensed and the service is running.
(iSCSI) If you want to use CHAP authentication, use the iscsi security command or the FilerView interface to configure the CHAP user name and password on the storage system.
Ensure that you use the same user names and passwords that you supplied when you set up CHAP on the host.
Create an igroup that includes the Linux host.
Note: You can use the sanlun fcp show adapter -c command to get the information necessary to create an igroup on the controller. The information supplied by this command can only be used to create an igroup if the controller is running Data ONTAP operating in 7-Mode.
Create and map the LUNs to the igroup.
Ensure that you specify the LUN operating system type and igroup type as linux.
Optionally, enable ALUA.
For clustered Data ONTAP, ALUA works with the FC, FCoE, and iSCSI protocols. For Data ONTAP operating in 7-Mode, ALUA works with the FC and FCoE protocols. For information about which versions of Linux support ALUA, see the section Linux configurations that support ALUA.
Note: ALUA must be enabled if you are using clustered Data ONTAP.
If you are using clustered Linux hosts, ensure that the igroup contains either the WWPNs or the initiator names of all the hosts in the cluster that need access to the mapped LUN.