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15Contents
Running a rule ............................................................................................447
Identifying configuration problems using Storage Expert .........................449
Recovery time .............................................................................................449
Disk groups .................................................................................................451
Disk striping ...............................................................................................453
Disk sparing and relocation management .............................................454
Hardware failures ......................................................................................454
Rootability ...................................................................................................454
System name ...............................................................................................454
Rule definitions and attributes ........................................................................456
Chapter 16 Performance monitoring and tuning
Performance guidelines ....................................................................................463
Data assignment .........................................................................................463
Striping ........................................................................................................464
Mirroring .....................................................................................................464
Combining mirroring and striping ..........................................................465
RAID-5 .........................................................................................................465
Volume read policies .................................................................................466
Performance monitoring ..................................................................................467
Setting performance priorities ................................................................467
Obtaining performance data ....................................................................467
Using performance data ...........................................................................469
Tuning VxVM .....................................................................................................472
General tuning guidelines ........................................................................472
Tuning guidelines for large systems .......................................................473
Changing the values of tunables ..............................................................474
Tunable parameters ...................................................................................475
Appendix A Commands summary
Online manual pages .........................................................................................507
Section 1M — administrative commands ...............................................507
Section 4 — file formats ............................................................................510
Section 7 — device driver interfaces .......................................................510
Appendix B Configuring Veritas Volume Manager
Setup tasks after installation ...........................................................................511
Adding unsupported disk arrays as JBODs ....................................................512
Adding foreign devices ......................................................................................512
Adding disks to disk groups .............................................................................512
Guidelines for configuring storage .................................................................513
Mirroring guidelines ..................................................................................514