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README.md

az-snapshot-distribution

Copy and distribute managed disk snapshots across multiple Azure Subscriptions

1. Create Snapshot

create-MDSnapshot.ps1

A managed disk snapshot is created from data disks that are attached to the source virtual machine.

Required Parameters

Name Description
SourceVM Virtual Machine source for data disks to snapshot
snapshotRG Resource Group to store snapshots 
# Required Parameters
param (
    # Default
    [parameter(position=0, mandatory=$true)][string]$sourceVm,
    [parameter(position=1, mandatory=$true)][string]$snapshotRG,
)

Configuration Option Tags

Configuration options from the original data disk will be recorded as tags on the new snapshot.

Tag Description
LUN Assigned LUN from sourceVM
diskSKU Managed disk SKU
diskSizeGB Managed disk size
SourceVM Source VM Name

2. Copy Snapshot

copy-snapshotRemoteSubscription.ps1

Copy a managed disk snapshot between Azure subscriptions.

Note: The user running this script needs to have appropriate permissions to create and manage snapshots in the source and target subscriptions.

Required Parameters

Name Description
sourceSubscriptionID Source Azure Subscription ID
targetSubscriptionID Target remote Azure Subscription ID
snapshotRg Resource Group where source snapshots are located
targetResourceGroupName Remote Resource Group to copy snapshots 
# Required Parameters

    [parameter(position=0, mandatory=$true)][string]$sourceSubscriptionID = "",
    [parameter(position=1, mandatory=$true)][string]$targetSubscriptionID = "",
    [parameter(position=2, mandatory=$true)][string]$snapshotRg = "",
    [parameter(position=3, mandatory=$true)][string]$targetResourceGroupName = ""

3. Attach Snapshot

attach-MDSnapshot.ps1

The source snapshot will be used to create a new managed disk (per VM). The new disk will be attached to the target VM.

Required Parameters

Name Description
snapshotRGName Resource Group where snapshots are stored
targetVmName Target VM to attach disk
targetVmResourceGroupName optional: Target VM Resource Group Name 
# Required Parameters
param (
    [parameter(position=1, mandatory=$true)][string]$snapshotRGName,
    [parameter(position=2, Mandatory=$true)][string]$targetVmName,
    [parameter(position=3, Mandatory=$false)][string]$targetVmResourceGroupName
)

Configuration options stored as Tags on the source snapshot will be used to define options for creating and attaching the new disk.

Configuration Option Tags

Tag Description
LUN Assigned LUN from sourceVM
diskSKU Managed disk SKU
diskSizeGB Managed disk size
SourceVM Source VM Name