44 Preparing Your Systems for Clustering
NOTE: If you choose to configure mutual CHAP authentication, you must first
configure target CHAP.
Remember, in terms of iSCSI configuration, the term target always refers to
the storage array.
Configuring Target CHAP Authentication on the Storage Array
1
From MD Storage Manager, click the
iSCSI
tab and then
Change Target
Authentication
.
Make a selection based on the following:
2
To configure a CHAP secret, select
CHAP
and select
CHAP Secret
.
3
Enter the
Target CHAP secret (
or
Generate Random Secret)
, confirm it
in
Confirm Target CHAP Secret
, and click
OK
.
Although the storage array allows sizes from 12 to 57 characters, many
initiators only support CHAP secret sizes up to 16 characters (128-bit).
NOTE: Once entered, a CHAP secret is not retrievable. 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.
4
Click
OK
.
Table 3-4. CHAP Settings
Selection Description
None This is the default selection. If None is the only selection, the
storage array allows an iSCSI initiator to log on without
supplying any type of CHAP authentication.
None and CHAP The storage array allows an iSCSI initiator to log on with or
without CHAP authentication.
CHAP If CHAP is selected and None is not selected, the storage array
requires CHAP authentication before allowing access.
book.book Page 44 Monday, June 21, 2010 1:45 PM
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