Fujitsu Eternus DX90 - Security Functions; Figure 1.17 LUN Mapping Function

Chapter 1 Overview
> 1.3 Functions
ETERNUS DX60/DX80/DX90 Disk storage system User Guide
46
Copyright 2010 FUJITSU LIMITED
P3AM-3042-06ENZ0
1.3.7 Security Functions
The ETERNUS DX60/DX80/DX90 possesses functions that allow numbers of volumes, that can
be recognized by a server, to be expanded or restricted by adjusting how the logical units (LUN)
seen by the host correspond to the volumes within the storage system.
"LUN mapping function" and "Host Affinity function" are available as security functions.
• LUN Mapping function
LUN mapping is used to set the relationship between the logical units (LUN) of the host and
the volumes of the device, on a per device port basis.
Figure 1.17 LUN Mapping function
By specifying different LUN mapping per port, it is possible to set the volumes that can be
accessed for each server.
LUN#0
Volume#0
:
Volume#127
Volume#128
:
Volume#255
Server A
:
LUN#127
LUN#0
Server B
:
LUN#127
Port
ETERNUS DX60/DX80/DX90
Port
Server A recognizes Volume#0
as LUN#0
Server B recognizes Volume#128
as LUN#0
LUN#0 = Volume#128
:
LUN#127 = Volume#255
LUN#0 = Volume#0
:
LUN#127 = Volume#127