Hp Hitachi Dynamic Link Manager Software Bedienungsanleitung Seite 37
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2. HDLM Functions
15
2.6 Distributing a Load Using Load Balancing
When the system contains multiple paths to a single LU, HDLM can distribute the load
across the paths by using multiple paths to transfer the I/O data. This function is called
load balancing, and it prevents a single, heavily loaded path from affecting the
performance of the entire system.
Figure 2-5: Flow of I/O Data When the Load Balancing Function Is Not Used shows
the flow of I/O data when the load balancing function is not used. Figure 2-6: Flow
of I/O Data When the Load Balancing Function Is Used shows the flow of I/O data
when the load balancing function is used. Both figures show examples of I/O
operations being issued for the same LU by multiple applications.
Figure 2-5: Flow of I/O Data When the Load Balancing Function Is Not Used
- 3000-3-F01-50(E) 1
- Summary of Amendments 3
- Intended Readers 5
- Organization of This Manual 5
- Related Publications 6
- Conventions: Abbreviations 6
- Conventions: Diagrams 11
- • General font conventions 12
- MakeDatabase 13
- StoreDatabase temp DB32 13
- Contents 15
- 4. HDLM Operation 177 17
- 5. Troubleshooting 217 18
- 6. Command Reference 227 18
- 7. Utility Reference 303 19
- 8. Messages 349 20
- Appendixes 467 20
- Index 483 21
- 1. Overview of HDLM 23
- 1.1 What is HDLM? 24
- • Thunder 9500V series 25
- • Lightning 9900V series 25
- • Virtual Storage Platform 25
- 1.2 HDLM Features 26
- 2. HDLM Functions 27
- 2.1 Devices Managed by HDLM 28
- 2.2 System Configuration 29
- Components Description 31
- 2.3 LU Configuration 32
- 2.4 Program Configuration 34
- PATH_ID value (fourth key) 45
- PATH_ID value (third key) 45
- 2.7.2 Manual path switching 49
- 2.7.3 Path status transition 50
- Offline(E) 51
- Online status 55
- Offline(C) 59
- Offline(E) or Online(E) 60
- 2.10 Error management 61
- /var/DynamicLinkManager/ 64
- DLMgetras) 65
- Audit Log 67
- 2.11.4 Audit Log Data Formats 72
- -mm-ddThh:mm:ss.s time-zone 73
- BasicLog 73
- 2.13 Cluster support 77
- 3.1 HDLM System Requirements 80
- AIX V7.1 (Virtual I/O Server) 81
- OS Kernel 81
- XP_ODM 5.0.52.1 or later 82
- Configurations 84
- MISSCOUNT) might 86
- MISSCOUNT value 86
- /etc 150 KB 87
- /opt 2 MB 87
- /usr 220 MB 87
- 3.4.4 Notes on a License Key 94
- 3.4.5 Notes on Trace Files 94
- 3.4.7 Notes on the Cluster 95
- HDLM-Managed device 96
- 3.5 Installing HDLM 97
- # mount -p 102
- # umount /mntpt 102
- # varyoffvg volume-group-name 102
- Available hdisk10 fscsi1 113
- # cfgmgr 127
- # lsdev -Cc disk 127
- HDevName column in 157
- 3.7 Setting up HDLM 158
- (1) Setting Up Load Balancing 159
- 1 and then 171
- 2 and then 171
- 4 and then 172
- ! and press the 172
- Monitoring Interval 173
- 7 and press 174
- Settings 175
- 3.10 Settings for Using HACMP 178
- 3.11 Settings for Using GPFS 181
- DISKTIMEOUT 183
- 3.13 Settings for Using VCS 185
- 3.14 Uninstalling HDLM 187
- 3.14.2 Uninstalling HDLM 187
- (HNTRLib2) 196
- (HNTRLib) 197
- 4. HDLM Operation 199
- 4.1 Notes on Using HDLM 200
- 4.1.3 Storage System 201
- Viewed From the Same Server 202
- Disk Environment 202
- 4.2.1 Notes on Using Commands 204
- 4.2.4 Viewing LU Information 207
- 4.2.9 Updating the License 211
- 4.4 HDLM Resident Processes 216
- 4.5.3 Changing a Path 224
- 4.5.4 Replacing an HBA 227
- 4.5.5 Replacing a Fiber Cable 233
- number 1 (fscsi1): 234
- number that corresponds to 235
- number is 1 235
- 5. Troubleshooting 239
- HDLM Error Information 240
- 5.3.1 Examining the messages 244
- 5.3.2 Obtain path information 244
- 5.4.1 Examining the Messages 246
- 6. Command Reference 249
- ") 251
- 6.2.1 Format 252
- 6.2.2 Parameters 252
- 6.3.1 Format 254
- 6.3.2 Parameter 254
- Format 256
- 6.4.1 Format 257
- 6.4.2 Parameters 257
- 6.5.1 Format 264
- 6.5.2 Parameters 264
- 6.6.1 Format 271
- 6.6.2 Parameters 271
- -intvl checking-interval 276
- Type Description 282
- 6.7.1 Format 288
- 6.7.2 Parameters 289
- -sys) to specify the program 290
- IO-Errors ie 299
- DNum dnu 299
- HDevName hd 299
- Displayed path information 303
- -path parameter or 303
- -path -item parameter 303
- -path -c parameter 303
- -: Not displayed 306
- -item parameter 307
- SLPR slpr 310
- PathName pn 310
- All items are displayed all 311
- Displayed LU information 314
- ChaPort) 320
- = yyyy/mm/dd hh:mm:ss 323
- 7. Utility Reference 325
- 7.1 Overview of the Utilities 326
- /dev directory 328
- The number of LUs is 256 329
- 7.2.1 Format 330
- 7.2.2 Parameters 330
- 7.3.1 Format 338
- 7.3.2 Parameters 338
- Information 341
- 7.4.1 Format 341
- 7.4.2 Parameters 341
- utility 342
- 7.5.1 Format 345
- 7.5.2 Parameter 345
- 7.6.1 Format 346
- 7.6.2 Parameters 346
- 7.7.1 Format 348
- 7.7.2 Parameters 348
- 7.8.1 Format 351
- 7.8.2 Parameters 351
- 7.9.1 Format 352
- 7.9.2 Parameters 352
- Usage : dlmpr {{ -k 354
- ...] [-a] 354
- 7.10.1 Format 355
- 7.10.2 Parameters 355
- 7.11.1 Format 356
- 7.11.2 Parameters 356
- 7.12.1 Format 358
- 7.12.2 Parameters 358
- [ODM_SETTINGS] section 362
- 7.12.4 Log file 367
- 7.13.1 Format 369
- 7.13.2 Parameters 369
- 7.13.3 Log file 369
- 8. Messages 371
- • HDLM manager 373
- • HDLM alert driver 373
- • HDLM management target 373
- 8.2 KAPL01001 to KAPL02000 374
- KAPL01005-W 375
- KAPL01006-W 375
- KAPL01007-W 375
- KAPL01008-W 375
- KAPL01009-W 376
- KAPL01012-E 376
- KAPL01013-E 376
- KAPL01014-W 377
- KAPL01015-W 377
- KAPL01016-W 377
- KAPL01018-W 378
- KAPL01019-W 378
- KAPL01021-E 379
- KAPL01023-W 379
- KAPL01024-W 379
- KAPL01036-E 379
- KAPL01039-W 380
- KAPL01040-W 380
- KAPL01041-E 380
- KAPL01044-W 380
- KAPL01045-W 381
- KAPL01048-W 381
- KAPL01049-I 381
- KAPL01050-I 382
- KAPL01051-I 382
- KAPL01052-I 382
- KAPL01053-I 383
- KAPL01054-W 383
- KAPL01055-I 383
- KAPL01056-I 384
- KAPL01057-I 384
- KAPL01058-W 384
- KAPL01059-W 385
- KAPL01060-I 385
- KAPL01061-I 385
- KAPL01063-I 386
- KAPL01068-I 386
- KAPL01069-W 386
- KAPL01070-E 386
- KAPL01076-I 388
- KAPL01078-W 388
- KAPL01079-W 388
- KAPL01080-W 388
- KAPL01081-E 389
- KAPL01082-E 389
- KAPL01083-I 389
- KAPL01084-W 390
- KAPL01088-W 390
- KAPL01089-E 390
- KAPL01095-E 391
- KAPL01096-E 391
- KAPL01097-W 391
- KAPL01100-I 391
- KAPL01101-W 392
- KAPL01102-I 392
- KAPL01103-I 392
- KAPL01104-I 392
- KAPL01112-E 393
- KAPL01114-W 393
- KAPL01115-W 394
- KAPL01116-W 394
- KAPL01117-W 394
- KAPL01118-W 394
- KAPL01119-W 395
- KAPL01120-W 395
- KAPL01121-W 395
- 8.3 KAPL03001 to KAPL04000 396
- KAPL03007-E 397
- KAPL03008-E 397
- KAPL03999-E 397
- 8.4 KAPL04001 to KAPL05000 399
- KAPL04009-E 400
- KAPL04010-E 400
- KAPL04011-E 400
- KAPL04012-E 401
- KAPL04013-E 401
- KAPL04014-E 401
- KAPL04019-E 401
- KAPL04021-I 402
- KAPL04022-W 402
- KAPL04023-E 402
- KAPL04024-C 403
- KAPL04025-C 403
- KAPL04026-I 403
- KAPL04027-I 403
- KAPL04045-I 406
- KAPL04046-E 406
- 8.5 KAPL05001 to KAPL06000 407
- KAPL05014-I 408
- KAPL05018-W 408
- KAPL05021-I 408
- KAPL05023-E 409
- KAPL05501-E 409
- KAPL05819-I 409
- 8.6 KAPL06001 to KAPL07000 411
- KAPL06013-E 412
- KAPL06014-E 412
- DLMgetras utility for 413
- 8.7 KAPL07001 to KAPL08000 414
- 8.8 KAPL08001 to KAPL09000 415
- KAPL08023-I 416
- KAPL08026-E 416
- PathID = aa...aa 417
- 8.9 KAPL09001 to KAPL10000 418
- KAPL09020-E 419
- KAPL09021-E 419
- KAPL09022-E 419
- KAPL09023-E 419
- KAPL09024-E 420
- KAPL09025-W 420
- KAPL09028-E 420
- KAPL09029-E 421
- KAPL09047-E 421
- KAPL09048-E 421
- KAPL09076-I 421
- KAPL09091-E 424
- KAPL09100-E 424
- KAPL09112-E 424
- KAPL09113-E 424
- KAPL09114-I 425
- KAPL09115-W 425
- KAPL09116-W 425
- KAPL09135-E 426
- KAPL09142-E 426
- KAPL09143-E 426
- KAPL09171-E 427
- KAPL09172-E 427
- KAPL09179-I 427
- KAPL09183-I 427
- KAPL09187-W 428
- KAPL09188-W 428
- KAPL09190-W 428
- KAPL09191-W 428
- KAPL09210-I 429
- KAPL09211-I 429
- KAPL09212-E 429
- KAPL09213-W 429
- KAPL09214-W 430
- KAPL09215-E 430
- KAPL09216-E 431
- KAPL09217-E 432
- KAPL09218-E 432
- KAPL09219-E 433
- KAPL09220-W 433
- KAPL09221-W 433
- KAPL09227-W 434
- KAPL09228-W 434
- KAPL09229-W 434
- KAPL09230-W 435
- KAPL09231-W 435
- KAPL09232-W 435
- KAPL09233-W 436
- KAPL09234-W 436
- KAPL09235-E 436
- KAPL09236-W 437
- KAPL09237-I 437
- KAPL09238-W 438
- KAPL09239-I 438
- KAPL09241-W 438
- KAPL09242-E 439
- KAPL09243-I 439
- KAPL09246-E 439
- KAPL09247-E 439
- KAPL09248-W 440
- KAPL09504-E 440
- KAPL09601-E 440
- KAPL09602-E 440
- KAPL09603-E 441
- KAPL09604-E 441
- 8.10 KAPL10001 to KAPL11000 442
- KAPL10005-W 443
- KAPL10006-W 443
- KAPL10007-W 443
- KAPL10008-W 443
- KAPL10009-W 444
- KAPL10010-W 444
- KAPL10011-W 444
- KAPL10012-W 445
- KAPL10013-W 445
- KAPL10014-W 446
- KAPL10015-W 446
- KAPL10016-W 447
- KAPL10017-W 447
- KAPL10020-I 447
- KAPL10021-I 447
- KAPL10034-E 449
- KAPL10035-E 449
- KAPL10036-E 449
- KAPL10049-I 450
- KAPL10050-I 450
- KAPL10521-W 450
- KAPL10523-E 450
- KAPL10524-E 451
- KAPL10525-E 451
- KAPL10526-I 451
- KAPL10556-W 454
- KAPL10557-I 454
- KAPL10558-E 454
- KAPL10559-E 454
- KAPL10560-E 455
- KAPL10561-I 455
- KAPL10571-I 455
- KAPL10572-W 455
- KAPL10583-E 458
- KAPL10584-E 458
- KAPL10585-I 459
- KAPL10586-I 459
- KAPL10587-W 459
- KAPL10588-W 460
- KAPL10641-I 460
- KAPL10642-I 460
- KAPL10643-W 460
- KAPL10644-W 461
- KAPL10645-W 461
- KAPL10646-W 461
- KAPL10648-E 461
- KAPL10649-E 462
- KAPL10650-I 462
- KAPL10651-I 462
- KAPL10801-W 464
- KAPL10802-W 464
- KAPL10804-E 464
- dlmodmset utility, see 466
- 8.11 KAPL11001 to KAPL12000 467
- KAPL11903-I 468
- KAPL11904-E 468
- KAPL11905-E 469
- KAPL11906-I 469
- XML reception - aa...aa 470
- XML transmission - aa...aa 470
- 8.12 KAPL13001 to KAPL14000 471
- KAPL13008-W 472
- KAPL13009-W 472
- KAPL13010-W 472
- KAPL13011-W 472
- KAPL13012-W 473
- KAPL13013-E 473
- KAPL13014-E 473
- KAPL13015-E 473
- KAPL13107-I 476
- KAPL13108-E 476
- KAPL13109-W 476
- KAPL13110-E 476
- KAPL13601-W 477
- KAPL13602-W 477
- KAPL13603-W 477
- KAPL13604-W 477
- KAPL13605-W 478
- KAPL13606-W 478
- 8.13 KAPL15001 to KAPL16000 479
- Component 483
- DLMgetras utility, see 484
- DLMgetras 485
- Appendixes 489
- B.1 Add-in HDLM Driver Module 491
- Corresponding AIX commands 494
- PR_exclusive 495
- SCSI Disks 496
- C. Glossary 497
- AutoPATH_ID 501
- , 254, 475 505
- , 8, 476 505
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