Chapter 4 Operations; Lan For Operation Management; Figure 4.1 Lan Control (Switching Of The Master Cm) - Fujitsu Eternus DX80 S2 User Manual

Chapter 4
This chapter describes the control of the LAN for operation management of the ETERNUS DX
Disk storage system, and the monitoring the status of the ETERNUS DX Disk storage system.
4.1

LAN for Operation Management

The ETERNUS DX Disk storage system must be connected to the LAN for operation manage-
ment. When remote support is used, information on errors of the ETERNUS DX Disk storage
system or other events can be notified to the remote support center.
This section explains how the LAN control controller of the ETERNUS DX Disk storage system
operates.
■
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 controller. 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.
has failed
ETERNUS DX Disk storage system
ETERNUS DX Disk storage system
Figure 4.1
ETERNUS DX80 S2/DX90 S2 Disk storage system User's Guide -Operation-
Operations
Master
CM
IP:x.x.x.a
CM#0 CM#0
Controller enclosure
Slave
CM
CM#0
Controller enclosure
LAN control (switching of the Master CM)
Copyright 2012 FUJITSU LIMITED
Slave
CM
CM#1
The Master CM is switched.
Master
CM
IP:x.x.x.a
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.
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