Hp XP P9500 Storage Manuel d'utilisateur Page 64
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Delete Continuous Access Synchronous
You can delete the Continuous Access Synchronous relationship between the primary and secondary
systems.
Prerequisite information
• All Continuous Access Synchronous pairs must be deleted.
• All logical paths will be deleted when the relationship is deleted.
• Deleting the Continuous Access Synchronous relationship with a remote system does not affect
the Continuous Access Synchronous operations between other primary system CUs and that
secondary system.
• After a secondary system is deleted, you can reconfigure the data path to add another
secondary system (RCU) to the primary system, or you can remove the data path and
reconfigure the primary system ports (initiator ports to ordinary target ports for fibre) to provide
additional host channels for the primary system.
Procedure 18 To delete the Continuous Access Synchronous relationship between one or more
secondary systems (RCUs) and a primary system
1. On the menu bar, click Actions > Remote Copy > Continuous Access Synchronous > RCU
Operation. The RCU Operation window opens.
2. Change to Modify mode by clicking the icon.
3. Make sure MCU&RCU is selected in Display.
4. Click the primary system CU, then select the RCU(s) that you want to delete from the RCU list.
Right-click and click RCU Operation/ Delete RCU.
5. When the confirmation message appears, click OK.
6. Verify the requested operation(s) in the Preview list.
To remove one or more operations, select the operation(s) from the preview list, right-click,
and click Delete.
7. When ready, click Apply.
Managing power-off for systems and network devices
Though you are responsible for controlling power-off activities, it is advisable to check with your
HP representative or HP Technical Support for assistance.
The following sections provide instructions for performing planned outages when Continuous Access
Synchronous is present.
General information
Please review the following system behaviors regarding powering off:
• If power is removed from a primary system while Continuous Access Synchronous operations
are in progress, the Continuous Access Synchronous pairs are not affected.
• When power is restored on the primary system, the system communicates with the remote
system(s) to confirm S-VOL pair status(es). Make sure that Continuous Access Synchronous
communications are fully restored (all paths have normal status) before beginning I/O
operations to the P-VOL.
If the primary system accepts an I/O for a P-VOL before this, all communications are restored,
the primary system will suspend the pair and change P-VOL status to suspended by RCU. The
primary system cannot change the pair status of the S-VOL.
• If power is removed from a secondary system or from a data path component while Continuous
Access Synchronous operations are in progress, the primary system detects the communication
failure, suspend all affected pairs, and generate SIMs reporting the failures. The primary
64 Monitoring and maintenance
- Abstract 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- Typical components 7
- Storage systems 7
- Volume pairs 8
- Data path 9
- Consistency groups 9
- Interfaces 14
- Failover software 14
- Initial copy 15
- Update copy 15
- System requirements 16
- Preparing P9500 systems 18
- Planning volume pairs 20
- Planning I/O to the S-VOL 21
- Managing differential data 21
- Synchronous 22
- 16,384Base (16KLDEV, SI/VM) 22
- Planning volume pairs 23 23
- Planning data paths 25
- 3 km4 Gbps 26
- 1.5 km8 Gbps 26
- Planning ports 27
- Planning consistency groups 28
- Host failover software 30
- Continuous Access Journal 32
- Business Copy 33
- LUN Expansion 35
- Virtual LVI/LUN 35
- Cache Residency 35
- LUN Manager 36
- Thin Provisioning 36
- Performance Monitor 36
- Auto LUN 37
- Data Retention 37
- Thin Provisioning Z 38
- Data Retention 39 39
- 5 Configuration operations 40
- 42 Configuration operations 42
- • When CU Free is selected 43
- 44 Configuration operations 44
- 48 Configuration operations 48
- 6 Pair operations 49
- 50 Pair operations 50
- Split pairs 51
- Resynchronize pairs 52
- Release pairs 53
- Change fence level 54
- 7 Monitoring and maintenance 55
- Pair status definitions 56
- Split and suspend types 57
- Export pair information 58
- Monitor copy operations, I/O 59
- Select data to be graphed 60
- Resize graph, save data 61
- Delete logical paths 62
- RCU maintenance 63
- General information 64
- Miscellaneous maintenance 65
- Media maintenance 66
- 8 Data migration 67
- Disaster recovery overview 68
- Analyze S-VOL currency 69
- 10 Troubleshooting 72
- Error codes and messages 76
- Pinned track recovery 83
- Contacting HP 84
- Related information 84
- Typographic conventions 85
- Pair Operation window 88
- Paircreate dialog box 93
- Pairsplit-r dialog box 94
- Pairresync dialog box 94
- Pairsplit-S dialog box 95
- Change Pair Option dialog box 95
- Display Filter dialog box 96
- RCU Operation window 97
- RCU Status dialog box 101
- Add RCU dialog box 103
- RCU Option dialog box 104
- Add Path dialog box 105
- Add SSID dialog box 105
- Usage Monitor window 106
- History window 107
- Export operations history 108
- History window notes 108
- System Option window 109
- Glossary 110
- 112 Index 112
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