HP XP External Storage Software - Manual (Page 75)

• I/O TOV: Value specified as the timeout for I/O to the external LU.
• Qdepth: Number of Read/Write commands that can be issued (queued) to the external LU at
one time.
• Path Watch: Time period beginning when the connection of all paths to the external LU are
down and ending when the external LU is blocked.
• 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
external LU. When an error occurs in the primary path, the path with the second highest
priority is used.
• Multi: Uses all set paths at the same time to execute I/Os to the external LU, 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: Path is normal.
• Unknown: Path status is unknown.
• Blockade: Path is blocked.
• 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: Port number of the local array connected to the port identified by the WWN selected in
the Port tree. One of the following icons appears for each port:
Description Icon
Port in Standard 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: External LU's identification 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: Path is normal.
• Unknown: Path status is unknown.
• Blockade: Path is blocked.
• 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).
External Storage XP user guide for the XP12000, XP10000, SVS200 75