Quantum TC2201E, Руководство пользователя

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Chapter 2 Getting Started
Advanced Configuration Options
Quantum TC2201E User’s Guide 29
Advanced Configuration Options
2
The following two sections provide some advanced configuration tips
that go beyond the quick setup procedures listed above.
iSCSI
Configuration
2
For iSCSI environments, the TC2201E provides a number of optional
configuration settings that can be used to enhance operation and security.
For more information about the settings described in this section, see
Chapters 6 and 7 of this manual.
Secure Connections
2
CHAP (Challenge-Handshake Authentication Protocol) provides a secure
procedure for connecting to systems, as follows:
1
After a link is made, the TC2201E sends a challenge message to the
connection requestor. The requestor responds with a value obtained
by using a one-way hash function.
2
The TC2201E checks the response by comparing it its own calculation
of the expected hash value.
3
If the values match, the authentication is acknowledged; otherwise
the connection is usually terminated.
At any time, the TC2201E can request the connected party to send a
new challenge message. CHAP identifiers are changed frequently
and authentication can be requested by the TC2201E at any time.
Port Failover
2
The iSCSI Portal Group Settings primarily serve to provide port failover
functionality for the TC2201E. By default, the TC2201E is set to use one
Portal Group for both ports, which effectively enables failover capability
between the two iSCSI ports.However, this option can be disabled so that
each port can be mapped separately.