Hp XP P9500 Storage User Manual Page 72
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When a pair is suspended, the primary system stops performing journal-obtain operations for the
pair. However, the primary system continues the following operations:
• Continues accepting write I/Os for the suspended P-VOL
• Keeps track of the P-VOL cylinders/tracks that are updated
• Keeps track of journal data discarded during the pair suspension. (Both primary and secondary
systems do this.)
A split or suspended S-VOL has a separate consistency status that indicates its update sequence
consistency with respect to the other S-VOLs in the associated journal. Consistency status displays
on the secondary system only. Table 3 (page 71) describes S-VOL consistency statuses.
When the pair is re-synchronized, the primary and secondary systems perform the following
operations:
• The secondary system sends the S-VOL bitmap to the primary system
• The primary system merges the P-VOL and S-VOL bitmaps to synchronize the tracks
These actions ensure that all cylinders/tracks containing journal data discarded on the secondary
system are re-synchronized.
Saving pair information to a text file
You can save pair status and other information to a text file using the Export button on the Pair
Operation window.
Procedure 15 To save pair information
1. You can filter the list columns in the Pair Operation window. Click Display Filter and select
the pair and volume data that you want to save.
2. In the Pair Operation window, click Export.
3. Click OK in the message that appears.
4. In the save dialog box, enter the name of the file and then click Save.
A message appears.
5. Click OK in the message that appears.
The following data can be exported:
DescriptionItem
Local system port.Port
Local system host group number and name. (The name is limited to a maximum of 16 characters.)Gr(Name)
Local system LU number.LUN
Local system LDKC number, CU number and LDEV number.Vol
Status of the pair.Status
Journal number in the local system.JNL
Mirror ID.Mr
Remote system serial number.S/N(LDKC)
Remote system path group ID.ID
Remote system controller ID and model name.CNTL
Remote system port number.Port
Remote system host group number.Gr
Remote system LU number in the remote system.LUN
72 Monitoring the system
- 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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