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Contents
1 Overview of Fast Snap................................................................................7
Workflow for Fast Snap.............................................................................................................7
Workflow of the storing of snapshot data................................................................................7
Components of Fast Snap..........................................................................................................8
Components of Fast Snap pairs.............................................................................................9
Consistency and snapshot groups..........................................................................................9
Consistency groups and splitting pairs..................................................................................10
Fast Snap.........................................................................................................................10
Thin Provisioning................................................................................................................10
Thin Provisioning licensed capacity..................................................................................10
RAID Manager..................................................................................................................10
How Fast Snap works..............................................................................................................11
Fast Snap pools and pool volumes.......................................................................................11
Virtual volumes and Fast Snap pairs.....................................................................................12
Workflow for creating groups and storing snapshot data using the RAID Manager.....................12
How snapshot data is stored...............................................................................................14
Workflow for the CAW method.......................................................................................15
Workflow for the COW method......................................................................................15
Fast Snap pair restoration...................................................................................................15
Fast Snap pair status...............................................................................................................15
The copy threshold option and host server I/O performance........................................................17
Sharing FS volumes with other XP7 storage system software applications........................................18
Sharing volumes and Data Retention access attributes.............................................................19
Access attributes and supported FS tasks..........................................................................19
Sharing Fast Snap volumes with Auto LUN............................................................................21
Sharing Fast Snap volumes with Business Copy......................................................................21
Sharing Fast Snap volumes with Continuous Access Synchronous and Continuous Access
Journal.............................................................................................................................23
Volume backup in a 3DC multi-target configuration workflow..............................................25
Capacity and using Fast Snap, Thin Provisioning, and Thin Provisioning Z in a single storage
system..............................................................................................................................26
Resource Partition...............................................................................................................26
Acronyms and abbreviations for XP7 storage system software applications used in this guide............26
2 Planning and design requirements..............................................................27
System requirements................................................................................................................27
Fast Snap task requirements................................................................................................27
Workflow for installing Fast Snap....................................................................................27
Downloading Fast Snap for Remote Web Console.............................................................27
Workflow for removing Fast Snap....................................................................................27
Fast Snap licensed capacity requirements..............................................................................27
Shared memory and the management area...........................................................................28
Shared memory requirements..........................................................................................28
Changing shared memory..............................................................................................28
Fast Snap volume requirements............................................................................................29
Fast Snap data pool requirements........................................................................................30
Consistency group requirements...........................................................................................31
Snapshot group requirements..............................................................................................31
Requirements for Fast Snap tasks..............................................................................................32
Calculating the number of Fast Snap pairs based on pair tables..............................................32
Workflow for calculating Fast Snap pairs based on the snapshot estimated manageable
capacity...........................................................................................................................32
Contents 3
- HP XP7 Fast Snap User Guide 1
- DescriptionDateEdition 2
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- 1 Overview of Fast Snap 7
- Components of Fast Snap 8
- ◦ Thin Provisioning (THP) 9
- ◦ RAID Manager (RAID Manager) 9
- Components of Fast Snap pairs 9
- Fast Snap 10
- Thin Provisioning 10
- RAID Manager 10
- How Fast Snap works 11
- How Fast Snap works 13 13
- How snapshot data is stored 14
- Fast Snap pair status 15
- 16 Overview of Fast Snap 16
- Access Journal 23
- Ac-S/Cnt Ac-J P-VOL 24
- Resource Partition 26
- System requirements 27
- Shared memory requirements 28
- Changing shared memory 28
- Fast Snap volume requirements 29
- Snapshot group requirements 31
- Pool capacity calculations 35
- 3 Configuring Fast Snap 37
- Creating Fast Snap data pools 38
- Selecting pool volumes 40
- Changing LDEV settings 44
- 46 Configuring Fast Snap 46
- Confirming used LDEV IDs 47
- 48 Configuring Fast Snap 48
- 50 Configuring Fast Snap 50
- Creating LDEVs 51
- 54 Configuring Fast Snap 54
- 56 Configuring Fast Snap 56
- Changing CLPR numbers 60
- 4 Managing Fast Snap Pairs 61
- Creating Fast Snap pairs 64
- Creating Fast Snap pairs 65 65
- 66 Managing Fast Snap Pairs 66
- Creating Fast Snap pairs 67 67
- Creating Fast Snap pairs 69 69
- Complex Fast Snap pairs 70
- Creating Fast Snap pairs 71 71
- Snapshot data storage methods 73
- 74 Managing Fast Snap Pairs 74
- Restoring Fast Snap pairs 79
- Formatting external volumes 81
- 82 Managing Fast Snap Pairs 82
- Deleting Fast Snap pairs 85
- Prerequisites 86
- Releasing Fast Snap pairs 87
- Monitoring pair information 88
- Viewing LDEV properties 91
- Monitoring pair properties 98
- Monitoring synchronous rates 101
- Prerequisite 102
- Monitoring consistency groups 104
- Related topics 105
- Managing pools 110
- Monitoring pool information 111
- Management Status 115
- Managing pools 117 117
- Increasing pool capacity 118
- Managing pools 119 119
- ◦ The cache memory 120
- Managing pools 121 121
- Managing pools 125 125
- Editing pool names 126
- Managing pools 127 127
- Recovering blocked pools 128
- Managing pools 129 129
- Workflow for deleting pools 130
- Managing pools 131 131
- Managing virtual volumes 132
- Managing virtual volumes 133 133
- Deleting virtual volumes 135
- 6 Troubleshooting 138
- ◦ Delete unnecessary V-VOLs 139
- Automatic completion of SIMs 142
- Manually completing SIMs 142
- Confirming SIM completion 143
- 144 Troubleshooting 144
- 7 Support and other resources 145
- Typographic conventions 146
- Technical Support 150
- B Fast Snap GUI reference 157
- Replica LDEVs tab 158
- Local Replication window 159
- BC Pairs tab 160
- FS Pairs tab 163
- Consistency Groups tab 166
- Pairs table 168
- View Pair Properties window 169
- Pair Properties table 170
- Histories window 172
- FS Histories table 173
- ◦ Basic: Internal volume 173
- ◦ THP: THP V-VOL 173
- ◦ External: External volume 173
- Create Pools wizard 176
- Create Pairs wizard 176
- Select Primary Volumes window 177
- Available LDEVs table 178
- Selected LDEVs table 179
- Confirm window 182
- Select Pool window 183
- Split Pairs wizard 184
- Selected Pairs table 185
- Resync Pairs wizard 187
- Delete Pairs window 190
- Setting fields 192
- BC/FS System Options table 192
- DescriptionItem 194
- 194 Fast Snap GUI reference 194
- Glossary 195
- 196 Glossary 196
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