Backup a blob from one sa to another

backup.ps1

Write-Output "PowerShell Timer trigger function executed at:$(get-date)";

# Create src/dest contexts
# DEST_KEY & SRC_KEY are set as environment variables in app settings
$DestContext = New-AzureStorageContext -StorageAccountName "destStorageAccountName" -StorageAccountKey $env:DEST_KEY
$SrcContext = New-AzureStorageContext -StorageAccountName "srcStorageAccountName" -StorageAccountKey $env:SRC_KEY

# Get timestamp
$timestamp = Get-Date -Format o | foreach {$_ -replace ":", "."}

# Set dest filename
$destFilename = "destFilename" + $timestamp

# Copy blob
Start-AzureStorageBlobCopy -SrcBlob "srcFilename" -SrcContainer "copyFrom" -DestContainer "copyto" -DestBlob $destFilename -SrcContext $SrcContext -DestContext $DestContext

# List blobs in dest container
Get-AzureStorageBlob -Container "copyto" -Context $DestContext | select Name