HP StorageWorks 2.140 Director Switch - Manual (Page 24)

HAFM overview 22
HAFM appliance
The HAFM appliance provides a central point of control for managed Fibre Channel products. The
HAFM appliance is required for installing, configuring, and managing these products.
See the HP StorageWorks HA-Fabric Manager installation guide for details about the HAFM
appliance.
NOTE: Although products can perform normal operations without an HAFM appliance, the HAFM
appliance should operate at all times to monitor product operations, report failures, log event
changes, and log configuration changes.
HAFM application
The application is composed of two parts: the appliance (which runs only on the HAFM appliance)
and the client. The server is installed on one HAFM appliance and stores storage area network
(SAN) information; it does not have a user interface. To view SAN information through a user
interface, you must log in to the server running on the appliance through a client.
NOTE: The server and clients can reside on the same machine or on separate machines.
In most configurations, the server calls the client whenever it has new data.
In some cases, a network can utilize virtual private network (VPN) or firewall technology, which can
prohibit communication between the server application running on HAFM appliances and clients. In
this situation, the application automatically detects the network configuration and runs the client in
polling mode. See ”Configuring HAFM through a firewall ” on page 195.
Dual LANs on the HAFM appliance
When two LANs are connected at the HAFM appliance, Microsoft ® Windows ® and the HAFM
application designate one as the public LAN, and the other as the private LAN.
• The private LAN is for communication between the HAFM appliance and the directors and edge
switches that the HAFM appliance manages.
• The public LAN is for communication between the HAFM appliance and computers seeking
remote client access to the HAFM appliance.
Either LAN connection on the HAFM appliance can be the public LAN or the private LAN. The
directors and edge switches can be managed via either LAN; however, only the public LAN
supports remote client access.
The title bar of the main window of the HAFM application shows the IP address of the public LAN.