Connection To Lan For Operation Management; Figure 1.1 Lan Control (Switching Of The Master Cm) - Fujitsu Eternus DX60 S2 User Manual

Chapter 1 Preparation
1.1 Connection Preparation
1.1.2

Connection to LAN for Operation Management

The ETERNUS DX Disk storage system must be connected to the LAN for operation manage-
ment during system maintenance and operation management.
The network environment setup is performed during installation of the ETERNUS DX Disk
storage system. IP addresses must be prepared before the setup. Network devices that are used
to connect the ETERNUS DX Disk storage system to the LAN for operation management must
also be prepared.
This section explains how the controller of the ETERNUS DX Disk storage system controls the
LAN, the necessary preparation for connection to the LAN for operation management, and notes
on LAN connections.
1.1.2.1 LAN Control Controller (Master CM/Slave CM)
For a dual-controller type, the controller (CM) that is given the authority to manage the LAN is
called the Master CM and the other CM is called the Slave CM.
When an error occurs in the Master CM or LAN, the Master CM is switched automatically.
IP addresses of the LAN ports are not assigned to each CM. These IP addresses are assigned to
the role of master or slave. If the Master CM is switched, the same IP addresses are reused.
Therefore, even if the Master CM is switched and the physical port is changed, access can be
maintained via the same IP addresses.
CM#0
has failed
ETERNUS DX Disk storage system
ETERNUS DX Disk storage system
Figure 1.1
FUJITSU Storage ETERNUS DX60 S2 Disk storage system User's Guide -Installation-
Make sure to connect each controller to the LAN for operation
management.
Master
CM
IP:x.x.x.a
CM#0
Controller enclosure
The Master CM is switched.
Slave
CM
IP:x.x.x.a
CM#0
Controller enclosure
LAN control (switching of the Master CM)
15
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Slave
CM
CM#1
Master
CM
CM#1
When the Master CM is
switched, the IP addresses
of the previous Master CM's
are taken over by the new
Master CM.
P3AM-5502-05ENZ0