Chapter 8 Configuring ESX Storage

2Use the vSphere CLI command to bind the iSCSI port to the iSCSI adapter. esxcli swiscsi nic add -n port_name -d vmhba

IMPORTANT For software iSCSI, repeat this command for each iSCSI port connecting all ports with the software iSCSI adapter. With dependent hardware iSCSI, make sure to bind each port to an appropriate corresponding adapter.

3Verify that the port was added to the iSCSI adapter. esxcli swiscsi nic list -d vmhba

4Use the vSphere Client to rescan the iSCSI adapter.

Configuring Discovery Addresses for iSCSI Initiators

Set up target discovery addresses so that the iSCSI initiator can determine which storage resource on the network is available for access.

The ESX system supports these discovery methods:

Dynamic Discovery	Also known as SendTargets discovery. Each time the initiator contacts a
	specified iSCSI server, the initiator sends the SendTargets request to the server.
	The server responds by supplying a list of available targets to the initiator. The
	names and IP addresses of these targets appear on the Static Discovery tab. If
	you remove a static target added by dynamic discovery, the target might be
	returned to the list the next time a rescan happens, the HBA is reset, or the host
	is rebooted.
Static Discovery	The initiator does not have to perform any discovery. The initiator has a list of
	targets it can contact and uses their IP addresses and target names to
	communicate with them.

Set Up Dynamic Discovery

With Dynamic Discovery, each time the initiator contacts a specified iSCSI server, it sends the SendTargets request to the server. The server responds by supplying a list of available targets to the initiator.

When you set up Dynamic Discovery, you can only add a new iSCSI server. You cannot change the IP address, DNS name, or port number of an existing iSCSI server. To make changes, delete the existing server and add a new one.

Procedure

1Log in to the vSphere Client and select a server from the inventory panel.

2Click the Configuration tab and click Storage Adapters in the Hardware panel. The list of available storage adapters appears.

3Select the iSCSI initiator to configure and click Properties.

4 In the iSCSI Initiator Properties dialog box, click the Dynamic Discovery tab.

5To add an address for the SendTargets discovery, click Add. The Add SendTargets Server dialog box appears.

6Enter the IP address or DNS name of the storage system and click OK.

After your host establishes the SendTargets session with this system, any newly discovered targets appear in the Static Discovery list.

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