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D Configurations with Business Copy
Continuous Access Journal and Business Copy can share the same data volumes to provide multiple
copies of data, at both the primary and secondary sites.
This appendix provides configurations and information for using Business Copy with Continuous
Access Journal. For details about Business Copy, see the HP XP P9000 Business Copy User Guide.
Overview
Continuous Access Journal’s main function is to maintain a copy of the production volume in a
remote location. Backing up the local and/or remote Continuous Access Journal (Cnt Ac-J) volumes
with Business Copy (BC), or backing up the BC volumes with Cnt Ac-J, provides additional
advantages.
• When sharing the primary volume with BC
On-site data backup is provided in case of a Cnt Ac-J failure.◦
◦ Multiple copies of production data are provided on the local site for secondary purposes,
such as data analysis, testing and so on.
• Sharing the BC secondary volume with the Cnt Ac-J primary volume on the local site provides
a remote copy.
• When BC is cascaded on the remote side, data in the BC secondary volume can be used for
testing the Cnt Ac-J system and for recovery purposes.
◦ The BC secondary volume is available for continuous replication during a test.
◦ If a Cnt Ac-J problem is encountered during an actual recovery procedure, the BC
secondary volume provides a golden copy of the Cnt Ac-J secondary volume, which can
be used to restore the Cnt Ac-J secondary volume.
NOTE: To split the BC pairs in a consistency group whose volumes are also used in Cnt Ac-J
pairs, the Cnt Ac-J pairs must be in PAIR, PSUS, or PSUE status.
Cnt Ac-J data volumes are shared with BC volumes in specific configurations. The following topics
discuss these supported configurations.
Configurations with Business Copy primary volumes
NOTE: Business Copy Z source and target volumes are now referred to in Remote Web Console
as “primary” and “secondary” volumes. However, if using the previous version of the GUI, “source
volume (S-VOL)” and “target volume (T-VOL)” are still used. Terms in this document correspond to
the current GUI terminology.
A BC primary volume can be shared with a Cnt Ac-J primary or secondary volume.
• A BC primary volume shared with the Cnt Ac-J primary volume is illustrated below. This
configuration allows you to use BC for on-site data backup in case of a Cnt Ac-J failure, and
to use Cnt Ac-J to provide remote backup of the BC primary volume in case of a BC failure.
154 Configurations with Business Copy
- User Guide 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- P9500 storage systems 10
- Pair volumes 11
- Journal volumes 11
- Journals 11
- Reference Information 12
- Differential data management 13
- S-VOL write option 14
- Pair status 14
- System requirements 15
- Plan and design workflow 18
- Write-workload 19
- Sizing journal volumes 20
- Planning journals 20
- RAID group configuration 21
- Planning journal volumes 22
- Planning pair volumes 22
- Planning pair volumes 23 23
- Host failover software 25
- Planning for previous models 29
- System option modes 31
- 4 Planning the data path 34
- Calculating bandwidth 35
- 36 Planning the data path 36
- Sizing bandwidth 37 37
- 38 Planning the data path 38
- Packet loss 39
- Example configuration 40
- Port types 40
- Additional switches 41
- 42 Planning the data path 42
- 5 Configuration operations 44
- 46 Configuration operations 46
- 48 Configuration operations 48
- 50 Configuration operations 50
- 52 Configuration operations 52
- 6 Pair operations 54
- Creating the initial copy 55 55
- 56 Pair operations 56
- Creating the initial copy 57 57
- Splitting pairs 58
- Splitting mirrors 59
- Creating point-in-time copies 60
- Resynchronizing pairs 60
- Resynchronizing pairs 61 61
- Resynchronizing mirrors 62
- Deleting pairs 62
- Deleting pairs 63 63
- Deleting pairs in a mirror 64
- Deleting pairs in a mirror 65 65
- 7 Monitoring the system 66
- PSUS types and behaviors 69
- PSUE types and behaviors 71
- Selecting data to be graphed 74
- Manipulating graph, save data 76
- History of pair operations 79
- 8 Maintaining the system 80
- ◦ Initial 81
- ◦ Stopped 81
- ◦ Hold(Failure) 81
- 82 Maintaining the system 82
- 84 Maintaining the system 84
- Logical path maintenance 86
- Deleting logical paths 87
- When power stops unexpectedly 88
- 90 Maintaining the system 90
- General recovery procedures 91
- Cnt Ac-J secondary site: HOLD 100
- 10 Troubleshooting 103
- Troubleshooting logical paths 105
- B9E2, B9E4, D004 109
- B9E4, D004 112
- Miscellaneous troubleshooting 121
- 122 Troubleshooting 122
- Contacting HP 123
- Related information 123
- Typographic conventions 124
- Overview 126
- Failure recovery 127
- B Sharing volumes 133
- Cache Residency 135
- Data Retention 135
- Thin Provisioning 136
- LUN Expansion 137
- LUN Manager 137
- Fast Snap and Snapshot 137
- 138 Sharing volumes 138
- Virtual LUN 139
- Auto LUN 140
- 3DC cascade configuration 141
- Delta resync configuration 144
- ◦ Use the same mirror ID 146
- Problems that can occur 148
- ◦ Assign it to other mirrors 149
- ◦ Use it with RAID Manager 149
- 2 Data center configuration 151
- Pair status and data currency 156
- E GUI reference 157
- Journal Detail window 159
- Pair Operation window 165
- Paircreate dialog box 169
- Pairsplit-r dialog box 171
- Pairresync dialog box 172
- Pairsplit-S dialog box 173
- Change Pair Option dialog box 174
- Display Filter dialog box 174
- DKC Operation window 175
- Remote systems information 176
- Logical Path Information 177
- DKC Status dialog box 179
- Add DKC dialog box 180
- DKC Option dialog box 181
- Usage Monitor window 182
- History window 183
- Operations in History window 184
- History window notes 185
- Optional Operation window 186
- Glossary 188
- 190 Index 190
- 192 Index 192
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