For some reasons you need to convert Azure blob files from "Archive" to "Hot" tier. You can do it, this process is rehydration.

First, we need to write a script following as below


$storageAccountName = "{yourstoragename}"

$StorageAccountKey = "{your-key}"

$storageContainer = "{your-container}"

#get context

$ctx = New-AzStorageContext -StorageAccountName $storageAccountName -StorageAccountKey $StorageAccountKey

$MaxReturn = 300

$ThrottleLimit = 100

$Token = $Null

$total = 0;

$recover = 0;



    # get a list of all of the blobs in the container

    $listOfBlobs = Get-AzStorageBlob -Container $storageContainer -Context $ctx -MaxCount $MaxReturn  -ContinuationToken $Token -ConcurrentTaskCount 1000

    if($listOfBlobs.Length -le 0) { Break;} # exit

    $Token = $listOfBlobs[$listOfBlobs.Count -1].ContinuationToken;

    $total = $total + $listOfBlobs.Length;

    $listOfBlobs = $listOfBlobs | Where-Object {$_.ICloudBlob.Properties.StandardBlobTier -eq "Archive"}

    $listOfBlobs | ForEach-Object -Parallel {

        $blob = $_;

        $blob.ICloudBlob.SetStandardBlobTier("Hot", "High")

    } -ThrottleLimit $ThrottleLimit

    $recover = $recover + $listOfBlobs.Length;


    write-host "Recover: "  $recover "Total: " $total

}while ($Null -ne $Token)

Please be noted that, you have to login to your Azure tenant via Azure CLI before doing. It would be great if you download PowerShell latest version.