Dell EqualLogic PS6210S EqualLogic Auto-Snapshot Manager/Microsoft Edition Ver - Page 48

About Smart Copies

Get Dell EqualLogic PS6210S PDF manuals and user guides View all Dell EqualLogic PS6210S manuals
Add to My Manuals
Save this manual to your list of manuals

Page 48 highlights

About Smart Copies A Smart Copy is a snapshot, clone, or replica of an individual volume, application component, or a collection. Examples of application components include an Exchange mailbox database, anSQL Server database, or a Hyper-V virtual machine. A Smart Copy consists of the following objects: • One or more snapshots, replicas, or clones, depending on the type of Smart Copy operation and the original object. • A backup document, describing the Smart Copy. The resulting Smart Copy can also be called a Smart Copy. Even if the Smart Copy Set operation involves only a single volume, the result is still considered a Smart Copy Set. After you create a Smart Copy, you can then import and mount it, restore the original object from the Smart Copy, or restore the Smart Copy to a new location. You can create Smart Copies instantly, or you can create a schedule for Smart Copy creation, as described in About Schedules. When you create a Smart Copy, you can select from the options described in the following table. Table 17. Smart Copy Options Smart Copy Type Snapshot Smart Copy Description Creates a snapshot for each volume comprising the original object. For example, if the original object is a volume, the resulting Smart Copy set contains one snapshot. If the original object consists of a collection of two volumes, the resulting Smart Copy set contains two snapshots. Clone Creates a new volume for each volume comprising the original object. Replica Creates a replica for each volume comprising the original object on the PS Series group configured as a replication partner for the original objects. Each volume that is part of the original object must already be configured for replication in the group. Backup type Specifies the backup behavior type that you want to create, either copy or full. This option determines the behavior of the Smart Copy operation on the application log file. The actual backup behavior is application dependent. NOTE: Thin Clone is also a Smart Copy type, but this option only pertains to template volumes. When you create a Smart Copy with ASM/ME, the Smart Copies are visible in the PS Series Group Manager GUI and CLI. For troubleshooting, it might be necessary to access and manage a Smart Copy from the PS Series group, using the Group Manager GUI. Dell recommends that you manage Smart Copies from ASM/ME or the VSS requestor that created them, and not the Group Manager GUI. Torn Smart Copies ASM/ME Smart Copy operations occur on a per-volume basis, which means that if you create a Smart Copy of a component, ASM/ME copies the volume on which the component is stored. If different data sets are spanned across a common volume, the resulting Smart Copy contains partial information for a particular data set. Dell recommends that you place related data sets on separate volumes to avoid the possibility of creating a torn Smart Copy. The following figure illustrates a torn Smart Copy configuration. In the following figure, you can use ASM/ME to copy the data set indicated by Callout 1. This data set consists of data spanning Volumes A and B. The resulting Smart Copy Set (A2 and B2, with the same data set as Callout 1) contains a full copy of the data set. 48 General ASM/ME Operations

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
About Smart Copies
A Smart Copy is a snapshot, clone, or replica of an individual volume, application component, or a collection. Examples of application
components include an Exchange mailbox database, anSQL Server database, or a Hyper-V virtual machine.
A Smart Copy consists of the following objects:
•
One or more snapshots, replicas, or clones, depending on the type of Smart Copy operation and the original object.
•
A backup document, describing the Smart Copy.
The resulting Smart Copy can also be called a Smart Copy. Even if the Smart Copy Set operation involves only a single volume, the result
is still considered a Smart Copy Set. After you create a Smart Copy, you can then import and mount it, restore the original object from the
Smart Copy, or restore the Smart Copy to a new location. You can create Smart Copies instantly, or you can create a schedule for Smart
Copy creation, as described in
About Schedules
. When you create a Smart Copy, you can select from the options described in the
following table.
Table 17. Smart Copy Options
Smart Copy Type
Smart Copy Description
Snapshot
Creates a snapshot for each volume comprising the original object. For example, if the original object is
a volume, the resulting Smart Copy set contains one snapshot. If the original object consists of a
collection of two volumes, the resulting Smart Copy set contains two snapshots.
Clone
Creates a new volume for each volume comprising the original object.
Replica
Creates a replica for each volume comprising the original object on the PS Series group configured as a
replication partner for the original objects. Each volume that is part of the original object must already
be configured for replication in the group.
Backup type
Specifies the backup behavior type that you want to create, either copy or full. This option determines
the behavior of the Smart Copy operation on the application log file. The actual backup behavior is
application dependent.
NOTE:
Thin Clone is also a Smart Copy type, but this option only pertains to template volumes.
When you create a Smart Copy with ASM/ME, the Smart Copies are visible in the PS Series Group Manager GUI and CLI.
For troubleshooting, it might be necessary to access and manage a Smart Copy from the PS Series group, using the Group Manager GUI.
Dell recommends that you manage Smart Copies from ASM/ME or the VSS requestor that created them, and not the Group Manager
GUI.
Torn Smart Copies
ASM/ME Smart Copy operations occur on a per-volume basis, which means that if you create a Smart Copy of a component, ASM/ME
copies the volume on which the component is stored. If different data sets are spanned across a common volume, the resulting Smart
Copy contains partial information for a particular data set. Dell recommends that you place related data sets on separate volumes to avoid
the possibility of creating a torn Smart Copy.
The following figure illustrates a torn Smart Copy configuration.
In the following figure, you can use ASM/ME to copy the data set indicated by Callout 1. This data set consists of data spanning Volumes
A and B. The resulting Smart Copy Set (A2 and B2, with the same data set as Callout 1) contains a full copy of the data set.
48
General ASM/ME Operations