HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)

• Mode: How alternate paths between the local array and external array work. Alternate
path modes include:
• Single: Uses only the path with the highest priority (primary path) to execute I/O to the
externalLU.Whenanerroroccursintheprimarypath,thepathwiththesecondhighest
priority is used.
• Multi:UsesallsetpathsatthesametimetoexecuteI/OstotheexternalLU,distributing
the work load.
• Status: Status of the path set in the port identified by the WWN. The highest emergency level
status appears when two or more paths are set. Statuses include:
• Normal:Pathisnormal.
• Unknown: Path status is unknown.
• Blockade:Pathisblocked.
• Disconnect: Connection to the external array or external LU was intentionally stopped
using the Disconnect Subsystem or Disconnect Volume command.
• Warning: There are paths whose status is not normal. Check the status of the paths.
• Checking: Process of checking the paths' defined configuration informations is in progress.
• WWN of the external array
• Port:Portnumberofthelocalarrayconnectedtotheportidentified by the WWN selected in
the Port tree. One of the following icons appears for each port:
Icon
Description
Port in Sta
ndard mode.
Port in Initiator/External MIX mode.
• WWN: WWN of the external array selected in the Port tree.
• LUN: External array's LU number.
• Characteristic:ExternalLU'sidentification number.
• Group: External LU group number and reference number assigned to each LU in the external
LU group. External Storage XP automatically assigns reference numbers to LUs in the group
when the external LUs are mapped. This is displayed in the format of “external LU group
number - reference number of volume in the group”.
• Status: Status of the path configured by the port of the local array and the port of the external
array identified by the WWN. One of the following statuses is displayed:
• Normal:Pathisnormal.
• Unknown: Path status is unknown.
• Blockade:Pathisblocked.
• External device setting changed: External array setting changed. For example, the path
definition was deleted, or the external array itself was replaced by another device.
• LDEV size reduced: External array's volume capacity setting changed (volume capacity
was reduced).
• Not ready:ExternalarrayrepliedNOTREADY.
• Illegal request: External array replied ILLEGALREQUEST.
• Command aborted:ExternalarrayrepliedABORTEDCOMMAND.
• Busy: External array is in BUSY status.
• LDEV reserved: External array is in Reserve status.
• Response error: External array is in blocked status caused by an abnormal reply
(Response).
• Initiator port: External array's port attribute changed to the initiator port.
• Unknown port: External array's port attribute is unknown.
• Cannot detect port: Path was removed or external array's port could not be found.
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External Storage XP panes