Deactivating the Enhanced Remote Mirroring
Feature ...............8-11
Interaction with Other Features .......8-11
Storage Partitioning ..........8-11
FlashCopy Logical Drives ........8-12
VolumeCopy ............8-12
Dynamic Logical Drive Expansion (DVE) . . . 8-12
Enhanced Remote Mirroring utility ......8-13
Description of the Enhanced Remote Mirroring
Utility ..............8-13
Operation of the Enhanced Remote Mirroring
Utility ..............8-13
Running the Enhanced Remote Mirroring
Utility ..............8-14
Configuration Utility .........8-14
Chapter 9. Using the VolumeCopy
Premium Feature ..........9-1
How VolumeCopy Works .........9-1
Source Logical Drive ..........9-1
Target Logical Drive ..........9-2
VolumeCopy and Persistent Reservations . . . 9-2
Storage Subsystem Performance ......9-3
Restrictions .............9-3
VolumeCopy Commands ........9-3
Creating a logical VolumeCopy .......9-4
Enabling the logical VolumeCopy Feature . . . 9-4
Determining logical VolumeCopy Candidates 9-4
Creating a logical VolumeCopy ......9-5
Viewing logical VolumeCopy Properties ....9-6
Changing logical VolumeCopy Settings .....9-6
Recopying a Logical Drive .........9-7
Stopping a logical VolumeCopy .......9-8
Removing Copy Pairs...........9-8
Interaction with Other Features .......9-9
Storage Partitioning ..........9-9
FlashCopy Logical Drives ........9-9
Enhanced Remote Mirroring .......9-10
Role Reversals ...........9-10
Chapter 10. Using the Performance
Read Cache premium feature ....10-1
Creating the Performance Read Cache, adding
volumes, and removing volumes ......10-2
Performance Read Cache performance modeling 10-3
Performance Read Cache management tasks . . . 10-5
Chapter 11. Maintaining a storage
subsystem ............11-1
Routine Maintenance ..........11-1
Running a Media Scan .........11-1
Running a Redundancy Check ......11-2
Resetting a Controller .........11-2
Enabling a Controller Data Transfer.....11-2
Resetting the Battery Age ........11-3
Removing Persistent Reservations .....11-3
Synchronizing the Controller Clocks ....11-3
Locating Disk Drives .........11-3
Relocating an subsystem ........11-3
Performance Tuning ...........11-5
Monitoring the Performance .......11-5
Changing the RAID Levels .......11-6
Changing the Segment Size .......11-6
Changing the Cache Parameters ......11-6
Defragmenting an subsystem .......11-7
Troubleshooting and Diagnostics.......11-7
Collecting All Support Data .......11-7
Collecting Drive Data .........11-9
Diagnosing a Controller.........11-9
Running Read Link Status Diagnostics . . . 11-10
Collecting Switch-on-a-Chip Error Statistics 11-13
Recovery Operations ..........11-13
Setting the Controller Operational Mode. . . 11-14
Changing the Controller Ownership ....11-14
Initializing a Drive ..........11-14
Reconstructing a Drive ........11-15
Initializing a Logical Drive .......11-15
Redistributing Logical Drives ......11-15
Replacing CRUs ...........11-16
Chapter 12. Examples of Information
Returned by the Show Commands . . 12-1
Show Storage Subsystem Command .....12-1
Show Controller NVSRAM ........12-41
Show Drive .............12-45
Show Drive Channel Status ........12-49
Show Logical Drives ..........12-54
Chapter 13. Example Script Files 13-1
Configuration Script Example 1 .......13-1
Configuration Script Example 2 .......13-2
Chapter 14. Deprecated Commands
and Parameters ..........14-1
Deprecated Commands ..........14-1
Deprecated Parameters ..........14-1
Appendix A. Examples of information
returned by the show commands . . . A-1
Appendix B. Example script files . . . B-1
Appendix C. Global Copy mirror utility C-1
Appendix D. Simplex-to-Duplex
Conversion ............D-1
Appendix E. Additional Documentation E-1
Notices ..............F-1
Trademarks ..............F-2
Important notes.............F-2
Documentation format ..........F-3
Index ...............X-1
viii
IBM System Storage DS3000, DS4000, and DS5000: Command Line Interface and Script Commands Programming Guide