Quantum Scalar 100 Podręcznik Użytkownika Pobierz pdf (Strona 34)

30 Scalar Firewall Manager

Host Registration Service

The Host Registration Service (HRS) is a small agent installed on the hosts that access the library. HRS

simplifies security configuration and allows administrators to monitor host connections to the library. To do

this, HRS sends a periodic data pulse through the host’s Fibre Channel HBA to the library. The pulse

consists of the host’s WWN, network name, HBA type, and HBA driver level. The SNC 6101 records this

information and displays it in the AMC.

This information is used to simplify configuration of the SFM embedded firewall. Instead of manually

associating an HBA WWN with a specific host, you can configure the Scalar Firewall Manager with well-

known host names. HRS is also used to monitor the status of hosts connected to the library. When the SNC

6101 receives an HRS pulse from a host, the host is displayed in the AMC as “online.” If the SNC 6101 does

not receive two consecutive HRS pulses, the host will be listed as “offline.”

The SFM database contains separate fields to store the WWN, host name, host type, connection, host

status and a LUN access field that holds information about LUNs assigned to it.

When the SNC 6101 is first booted, SFM initially treats all hosts as “offline” until a host sends an

I/O request to the SNC 6101. SFM detects the I/O and obtains the WWN of the HBA or Initiator. If the WWN

is already in the database (already registered), SFM stores the value “online” in the status field.

If the WWN is not in the database, SFM adds it and stores the value “online” in the status field. SFM sets

the default value for each of the other parameter fields to “unknown.”

At this point, SFM has registered the HBA or Initiator but has minimal information about it. The system

administrator can proceed to complete the registration by using the SNC 6101 to manually enter the

“unknown” host information and assign access privileges to LUNs.

Note

The AMC view must be refreshed to see status changes for hosts.

CAUTION

If SFM is not enabled, hosts will not appear in the AMC.

Note

To install the Host Registration Service, please refer to your ADIC

Management Console User’s Guide.

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Quantum Scalar 100 Podręcznik Użytkownika Strona 34