User guide

63MAXDATA SR1202 M1 – StorView
®
RAID User Guide
8 SAN LUN Mapping
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.
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 iden-
tifying 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 addi
-
tional 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.
Accessing SAN LUN Mapping
Clicking the “SAN Mapping” icon in the Tool Bar on the Main screen will open the SAN LUN Mapping
screen. Here you will find a list of the specific host HBA ports and their mapping details. You can
view, name, create and remove mappings from this window. If no mappings are present, you may
create new mappings using the “Add New Map” feature. If a mapping exists, selecting a HBA Port
Name will display the current mapping(s) and its parameters.
In the Topology Information section you will find information related to the host port or HBA Initiator ID
selected. When you select a name item the information displayed about the mapping will be the LUN
assigned to the logical drive, read/write permissions, the HBA port and the logical drive’s name.