ETERNUS DX60/DX80/DX90 Disk storage system User Guide - Fujitsu
ETERNUS DX60/DX80/DX90 Disk storage system User Guide - Fujitsu
ETERNUS DX60/DX80/DX90 Disk storage system User Guide - Fujitsu
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Chapter 1 Overview<br />
1.3 Functions<br />
1.3.7 Security Functions<br />
The <strong>ETERNUS</strong> <strong>DX60</strong>/<strong>DX80</strong>/<strong>DX90</strong> possesses functions that allow numbers of volumes, that can<br />
be recognized by a server, to be expanded or restricted by adjusting how the logical units (LUN)<br />
seen by the host correspond to the volumes within the <strong>storage</strong> <strong>system</strong>.<br />
"LUN mapping function" and "Host Affinity function" are available as security functions.<br />
● LUN Mapping function<br />
LUN mapping is used to set the relationship between the logical units (LUN) of the host and<br />
the volumes of the device, on a per device port basis.<br />
Server A<br />
Server B<br />
LUN#0 = Volume#0<br />
:<br />
LUN#127 = Volume#127<br />
LUN#0<br />
:<br />
LUN#127<br />
LUN#0<br />
:<br />
LUN#127<br />
Port<br />
Port<br />
LUN#0 = Volume#128<br />
:<br />
LUN#127 = Volume#255<br />
Figure 1.17 LUN Mapping function<br />
Server A recognizes Volume#0<br />
as LUN#0<br />
<strong>ETERNUS</strong> <strong>DX60</strong>/<strong>DX80</strong>/<strong>DX90</strong><br />
Volume#0<br />
By specifying different LUN mapping per port, it is possible to set the volumes that can be<br />
accessed for each server.<br />
46<br />
<strong>ETERNUS</strong> <strong>DX60</strong>/<strong>DX80</strong>/<strong>DX90</strong> <strong>Disk</strong> <strong>storage</strong> <strong>system</strong> <strong>User</strong> <strong>Guide</strong><br />
:<br />
Volume#127<br />
Volume#128<br />
:<br />
Volume#255<br />
Server B recognizes Volume#128<br />
as LUN#0<br />
Copyright 2011 FUJITSU LIMITED P3AM-3042-08ENZ0
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