LaCie 131018 - StorView Snapshot - Mac, User Manual

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SAN LUN Mapping
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Chapter 7
SAN LUN Mapping
7.1 Overview
When attaching more than one host system to a storage system, it may be necessary to more precisely
control which hosts have access to which logical drives. In addition to controlling availability on a
controller port by port basis, it is also possible to further restrict access to a specific host system or single
adapter in a host system by the use of SAN LUN Mapping. Up to 512 SAN LUN Mappings are supported.
7.2 Terminology
The following table describes the terminology relating to StorView’s SAN LUN Mapping.
Term Description
Node Name This is an eight byte, 16 character hexadecimal number, uniquely
identifying a single fibre device. It incorporates the World Wide Name
and two additional bytes which are used to specify the format. In a host
system with multiple FC ports, all adapters will typically use the same
Node Name, but unique Port Names.
HBA Port Name (Port Name) This is an eight byte hexadecimal number, uniquely identifying a single
host HBA port. It incorporates the World Wide Name and two additional
bytes which are used to specify the format and indicate the port number.
Mapping Name A 32 character name that can be used to identify the host system.
Read/Write Access A host may read and write to the logical drive.
Read Only Access A host may only read from a logical drive.
*Used in another Mapping This notation marks a logical drive that has been mapped to another
Host HBA Port, but is available to be mapped to the selected Host HBA
Port. It will be displayed when the condition above has occurred and
appears in the Logical Drive pull-down menu selections. The logical
drives with other mappings will have an asterisk next to the name.