FUJITSU Disk Storage System DX60 - Manual (Page 50)

ETERNUS DX60 S2 Disk storage system User’s Guide -Operation-
50
Copyright 2012 FUJITSU LIMITED P3AM-5512-03ENZ0
Chapter 4 Operations
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 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.
Figure 4.1 LAN control (switching of the Master CM)
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:x.x.x.a
ETERNUS DX Disk storage system
ETERNUS DX Disk storage system
The Master CM is switched.
CM#0
has failed
IP:x.x.x.a
When the Master CM is
switched, the IP addresses
of the previous Master CM’s
are taken over by the new
Master CM.