Appendix—Manual Configuration of iSCSI 63
5
Select the host type.
6
Select whether or not the host server will be part of a host server group that
shares access to the same virtual disks as other host servers. Select
Yes
only
if the host is part of a Microsoft cluster.
7
Click
Next
.
8
Specify if this host will be part of a host group.
9
Click
Finish
.
Understanding CHAP Authentication

What is CHAP?

Challenge Handshake Authentication Protocol (CHAP) is an optional iSCSI
authentication method where the storage array (target) authenticates iSCSI
initiators on the host server. Two types of CHAP are supported
•Target CHAP
• Mutual CHAP

Targe t CHA P

In target CHAP, the storage array authenticates all requests for access issued
by the iSCSI initiator(s) on the host server using a CHAP secret. To set up
target CHAP authentication, you must enter a CHAP secret on the storage
array, then configure each iSCSI initiator on the host server to send that
secret each time it attempts to access the storage array.

Mutual CHAP

In addition to setting up target CHAP, you can set up mutual CHAP in which
both the storage array and the iSCSI initiator authenticate each other. To set up
mutual CHAP, configure the iSCSI initiator with a CHAP secret that the
storage array must send to the host sever in order to establish a connection. In
this two-way authentication process, both the host server and the storage array
send information that the other must validate before a connection is allowed.
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