Dell PowerVault MD3660i - Manual (Page 39)

NOTE: A CHAP secret is not retrievable after it is entered. Ensure that you record the secret in an accessible
place. If Generate Random Secret is used, copy and paste the secret into a text file for future reference since
the same CHAP secret is used to authenticate any new host servers you may add to the storage array. If you
forget this CHAP secret, you must disconnect all existing hosts attached to the storage array and repeat the
steps in this chapter to add them again.
4. Click OK.
Configuring Mutual CHAP Authentication On The Storage Array
The initiator secret must be unique for each host server that connects to the storage array and must not be the same as
the target CHAP secret.
Change the initiator authentication settings in the Change Target Authentication window. Use these options to change
the settings:
• None — Select None if you permit no initiator authentication. If you select None, any initiator can access this
target. Use this option only if you do not require secure data. However, you can select both None and CHAP at
the same time.
• CHAP — Select CHAP if you want to enable an initiator that tries to access the target to authenticate using
CHAP. Define the CHAP secret only if you want to use mutual CHAP authentication. If you select CHAP, and if no
CHAP target secret is defined, an error message is displayed. Click CHAP Secret to view the Enter CHAP
Secretwindows. Use this window to define the CHAP secrets.
NOTE: To remove a CHAP secret, you must delete the host initiator and add it again.
Step 6: Configure CHAP Authentication On The Host Server
(Optional)
If you configured CHAP authentication in Step 5: Configure CHAP Authentication on the Storage Array (Optional),
complete the following steps. If not, skip to Step 7: Connect to the Target Storage Array From the Host Server.
Select the set of steps in one of the following sections (Windows or Linux) that corresponds to your operating system.
For Windows Server 2008 GUI Version
1. Click Start→ Programs→ Microsoft iSCSI Initiator or click Start→ All Programs→ Administrative Tools→ iSCSI
Initiator.
2. If you are not using mutual CHAP authentication, go to the step 4.
3. If you are using mutual CHAP authentication, click the General tab and select Secret. At Enter a secure secret,
enter the mutual CHAP secret you entered for the storage array
4. Click the Discovery tab.
5. Under Target Portals, select the IP address of the iSCSI port on the storage array and click Remove.
The iSCSI port you configured on the storage array during target discovery disappears.
6. Under Target Portals, click Add and re-enter the IP address or DNS name of the iSCSI port on the storage array
(removed above).
7. Click Advanced and set the following values on the General tab:
– Local Adapter — Should always be set to Microsoft iSCSI Initiator.
– Source IP — The source IP address of the host you want to connect with.
– Data Digest and Header Digest — Optionally, you can specify that a digest of data or header information be
compiled during transmission to assist in troubleshooting.
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