Hitachi Dynamic Link Manager, User Manual, Page: 21 / 746

xvii
4.3.5 Displaying Corresponding Information About an HDLM Device, SCSI
Device, and LDEV......................................................................................344
4.3.6 Initializing Statistical Information for Paths ...............................................345
4.3.7 Viewing and Setting Up the Operating Environment..................................346
4.3.8 Viewing License Information......................................................................348
4.3.9 Updating the License...................................................................................348
4.3.10 Viewing HDLM Version Information .......................................................349
4.3.11 Viewing HDLM Component Information .................................................350
4.4 Starting and Stopping the HDLM Manager............................................................352
4.4.1 Starting the HDLM Manager ......................................................................352
4.4.2 Stopping the HDLM Manager.....................................................................353
4.5 HDLM Resident Processes.....................................................................................355
4.6 Reconfiguring the HDLM Operating Environment................................................356
4.6.1 Replacing HBAs..........................................................................................356
4.6.2 Replacing a Fiber Cable ..............................................................................364
4.6.3 Replacing the Fibre Channel Switch...........................................................367
4.6.4 Changing the HDLM Device Configuration...............................................369
4.6.5 About Creating a New HDLM Device........................................................383
4.6.6 Note on adding a BladeSymphony I/O drawer ...........................................385
5. Troubleshooting
387
5.1 Information Collected by the DLMgetras Utility for Collecting HDLM Error
Information............................................................................................................388
5.2 Checking Error Information in Messages...............................................................389
5.3 What To Do for a Path Error ..................................................................................391
5.3.1 Examining the Messages.............................................................................392
5.3.2 Obtain Path Information..............................................................................392
5.3.3 Identifying the Error Path............................................................................393
5.3.4 Narrowing Down the Hardware That Might Have Caused the Error .........393
5.3.5 Identifying the Error Location and Correcting any Hardware Error...........393
5.3.6 Placing the Path Online ...............................................................................393
5.4 What To Do for a Program Error............................................................................394
5.4.1 Examining the Messages.............................................................................394
5.4.2 Obtaining Program Information ..................................................................394
5.4.3 What To Do for the Program Error .............................................................395
5.4.4 Contacting your HDLM Vendor or Maintenance Company .......................395
5.5 What To Do for Other Errors..................................................................................396
6. Command Reference
397
6.1 Overview of the HDLM Command dlnkmgr .........................................................398
6.2 clear (Returns the Path Statistics to the Initial Value) ............................................400
6.2.1 Format .........................................................................................................400
6.2.2 Parameters ...................................................................................................400
6.3 help (Displays the Operation Format) ....................................................................402