Fujitsu Eternus DX80 S2 - Figure 4.1 LAN Control (Switching of the Master CM); Figure 4.2 LAN Control (When the IP Address of the Slave CM Is Set)

Chapter 4 Operations
4.1 LAN for Operation Management
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Operation-
Copyright 2013 FUJITSU LIMITED P3AM-4842-12ENZ0
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Figure 4.1 LAN control (switching of the Master CM)
• Each controller has an LED that lights up green to identify when it is the Master CM.
• Setting the IP address of the Slave CM ensures that ETERNUS Web GUI or ETERNUS CLI can be used from
the Slave CM if an error occurs on the LAN path for the Master CM. The Master CM and the Slave CM
perform different functions. The Slave CM can only switch the Master CM and display the status of the
ETERNUS DX Disk storage system.
The IP address of the Slave CM does not need to be set for normal operation.
Figure 4.2 LAN control (when the IP address of the Slave CM is set)
Controller enclosure
MNT
CM#0
Master
CM
MNT
CM#1
Slave
CM
Controller enclosure
MNT RMT RMT RMT RMT
CM#0
Slave
CM
MNT
CM#1
Master
CM
IP address A
ETERNUS DX Disk storage system
ETERNUS DX Disk storage system
The Master CM is switched.
CM#0
has failed
IP address A
When the Master CM is
switched, the IP addresses
of the previous Master CM’s
are taken over by the new
Master CM.
Controller enclosure
MNT
CM#0
Master
CM
MNT
CM#1
Slave
CM
RMT RMT
IP address A IP address B
ETERNUS DX Disk storage system
LAN path
error
The IP address of the Slave CM is used
to switch the Master CM and display
the status of
the ETERNUS DX Disk storage system.