Security Functions; Figure 1.17 Lun Mapping Function - Fujitsu Eternus DX60 User Manual

Chapter 1 Overview
> 1.3 Functions
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.
Server A
Server B

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.
P3AM-3042-06ENZ0 ETERNUS DX60/DX80/DX90 Disk storage system User Guide
LUN#0 = Volume#0
Server A recognizes Volume#0
:
as LUN#0
LUN#127 = Volume#127
LUN#0
Port
:
LUN#127
LUN#0
Port
:
LUN#127
LUN#0 = Volume#128
Server B recognizes Volume#128
:
as LUN#0
LUN#127 = Volume#255
46
ETERNUS DX60/DX80/DX90
Volume#0
:
Volume#127
Volume#128
:
Volume#255
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