HP StorageWorks External Storage XP user guide (T1706-96006, June 2006)

86 Configuring external LUs
• Product
External array’s product name.
• LUN
LU number of the external LU.
• Attribute
Select from the following access attributes:
• Read/Write: Read and write operations can be performed on the volume.
• Read Only: Only read operations can be performed on the volume.
• Protect: You cannot access the volume. Read and write operations cannot be performed.
• S-Vol
Indicates whether or not the volume can be specified as an S-VOL: Enable or Disable.
• Reserved
Indicates whether RAID Manager XP and Command View XP or XP Remote Web Console can be used
to make LU path and command device settings.
•Hyphen (-): You can use RAID Manager XP and Command View XP or XP Remote Web Console to
make LU path and command device settings.
• RAID Manager: You can use RAID Manager XP to make LU path and command device settings, but
cannot use Command View XP or XP Remote Web Console.
• Retention Term
Period (in days) when you cannot change the Attribute field to Read/Write.
• Mode
Mode the RAID Manager XP user assigns to the logical volume.
• Zer: Zero Read Cap mode is assigned to the logical volume.
• Inv: Invisible mode is assigned to the logical volume.
• Zer/Inv: Zero Read Cap and Invisible mode are assigned to the logical volume.
•Hyphen (-): The RAID Manager XP user has not assigned a mode to the logical volume.
• Extent
Indicates whether extents are set.
•Asterisk (*): Extents are set.
•Hyphen (-): Extents are not set.
• Used Volumes
Licensed capacity for LUN Security XP Extension that the LU has used.
Setting alternate paths for external LUs
Before using an external LU mapped as an internal LDEV, you must set at least one alternate path from the
internal LDEV to the external LU (likely by way of an alternate controller). The number of alternate paths set
is the same as the number specified on the Add LU or Auto Map Setting window when the LU was mapped
as the internal LDEV. For more information, see ”Alternate paths” on page 22.
Use the Path Setting window (Figure 51) to add and define alternate paths to the paths set at mapping or
change the alternate paths.
NOTE: You can add or delete alternate paths by selecting multiple external LUs at one time. For more
information, see ”Adding alternate paths by selecting multiple external LUs (Add Paths)” on page 91 and
”Deleting alternate paths by selecting multiple external LUs (Delete Paths)” on page 93.
Use the Path Setting window (Figure 51) to define alternate paths.
You can perform the following operations on the Path Setting window:
• ”Defining alternate paths” on page 89