Hp XP P9500 Storage User Manual Page 167
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DescriptionItem
Pair Operation
(continued)
• Paired VOL: A data volume in the remote system. See the figures following this table for an example.
This column indicates a P-VOL if the remote system is a primary system. This column indicates an S-VOL
if the remote system is a secondary system. Do not change or delete the port ID, GID, or LUN specified
when creating the pair. This column is blank if the volume in the local system is neither a P-VOL nor
S-VOL
• Pair JNL: The journal number for the remote system. This column is blank if the volume in the local
system is neither a P-VOL nor an S-VOL.
• CTG: Consistency group number. Remains blank if the volume in the local system is neither a P-VOL
nor an S-VOL.
• Err Lv.: The range of pair split on error.
Mirror: If an error occurs with this pair, all the pairs in the mirror where this pair belongs will be split.
LU: If an error occurs with this pair, only this pair will be split.
• Sync.: If the volume in the local system is a P-VOL, this column shows progress of an initial copy
operation. If the volume in the local system is an S-VOL, this column shows information in the following
ways:
◦ If the volume pair is not split, this column shows nothing.
◦ If the volume pair is split and therefore is in PSUS or PSUE status, this column usually shows
synchronization rate (that is, concordance rate) between the S-VOL before it became split and the
S-VOL after it became split.
For example, the synchronization rate (that is, concordance rate) is 100 percent if the contents of the
S-VOL are the same before and after the volume pair became split.
Caution: If a failure in the initial copy operation causes the volume pair to be split, this column
shows nothing. If a failure occurs in the initial copy operation, the Detailed Information dialog box
shows the phrase "Initial copy failed".
• In the following cases, this column will be blank:
◦ When the volume in the local system is neither a P-VOL nor an S-VOL.
◦ When the status of the volume pair is HOLD or HLDE.
• CLPR: The number and the name of the CLPR where the data volume belongs.
• Pair Copy Time: The time taken for the copy operation (from the start of the operation to the end). The
time that is shown in Pair Copy Time differs from the time that is shown in Copy Time on the History
window.
To create a pair:
1. MCU receives a request to create a pair.
2. MCU receives a request to start the paircreate operation.
3. The paircreate operation is started according to the conditions of initial copy priority and initial
copy activities.
• Pair Copy Time shows the amount of time needed to the complete the paircreate operation (i.e., the
progress of the paircreate operation reaches 100%). Copy Time on the History window shows the
amount of time needed from step a to the completion of the paircreate operation.
The size of used volumes, and also indicates the licensed capacity. For example, if 12.34 (15.0) (TB)
appears, the licensed capacity for Cnt Ac-J is 15.0 terabytes, and 12.34 terabytes of volumes are used.
If the licensed capacity is unlimited, the sized of used volume does not appear.
Used Volume
The current total number of pairs.Total Pairs
The Preview list shows changes that have been made in the window. When you change settings in the
window, the changes appear in the Preview list before the changes are applied to systems. If you are
sure that information in the Preview list is correct, click Apply to apply the settings that you have made.
Preview
When the Preview list shows changes that have been made, you can perform only the same type of
operation that you have been doing and cannot perform most of other operations (you can only view
detailed information about pairs even when the Preview list shows changes). For example, if you are
Pair Operation window 167
- 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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