HP XP P9500 Storage - Manual (Page 31)

You can set the mapping policy in advance and choose whether to execute port discovery
automatically or manually. If port discovery is executed automatically, WWNs connected to all
the external ports of the local storage system will be searched for. If port discovery is executed
manually, you can select a specific external port and limit the scope to search WWNs. If you can
specify which external port to search for, you can reduce the operation time by executing the port
discovery manually.
Volume discovery searches for and gets information about external volumes from the target ports
of the external storage system. Volume discovery is automatically executed after the port discovery
process.
NOTE: When a port in an external storage system is connected to P9500 and has a management
LU (for example, Universal Xport LU), an extra operation is required. A management LU is an LU
that receives commands issued by a particular application. The management LU controls or manages
that application. The management LU stores control information from that application and therefore
the management LU cannot be used as an external volume. A command device is not a management
LU.
Before performing port discovery or volume discovery, perform one of the following operations on
the external storage system.
•
Delete the management LU from the port connected to P9500.
•
Make sure that at least one LU is used for data storage and has a smaller LUN than the LUN
of the management LU. Also make sure that the data storage LU is set to the port connected
to P9500.
•
Use the security function and configure the access attribute of the management LU to prohibit
read and write operations.
If none of the above operations are performed, an external storage system that has a management
LU might not be recognized by the local storage system.
System requirements
The system requirements for External Storage are:
P9500 storage system (first storage system)
All the necessary hardware and microcode required for External Storage operations must be
installed and enabled. In this user guide, the first storage system is called “local storage system.”
Storage system other than the first storage system
A second storage system must be available and operated as an external storage system. In this
user guide, the second storage system is called an "external storage system." For details about
storage systems supported as external storage systems, see
(page 31) .
P9500 Remote Web Console computer (user-supplied computer)
See the HP P9000 Remote Web Console User Guide for instructions on installing and using the
Remote Web Console computer.
License key for External Storage program product
You need a license key to install External Storage.
Storage systems supported as external storage systems
Supported storage systems that can be connected as the external storage system are shown in the
following table. The table includes information on how those storage systems are referenced in
this document and in the External Storage windows.
System requirements 31