How to find hot or cool files in blob container - azure-storage

Question

Is there some way or script to search in your blob container which files are hot or cool to change the to archive?
I have thousands of folders and files and to make this work manually is a nightmare

Answer 1

If you want to change the blob tier(hot or cool) to archive tier, there is a built-in feature named lifecycle management.
You can just set a rule for your storage account(the rule can be applied for container level or account level or subfolder level as per your need), then the blob service can automatically change the tier(hot and cool) to archive.
Here is an example for container level:
1.Nav to azure portal -> your storage account -> lifecycle management, then click "Add a rule":
In the Details panel -> Specify a "rule name", select "Rule scope"(here, select "Limit blobs with filter" for container level), "Blob type" and "Blob subtype":
3.In the "Base blobs", specify the settings as below:
4.In "Filter set", just type your container name for Prefix match:
5.Click "Add" button to save the rule. Note that the rule will be executed after 24 hours.

Answer 2

You could change access tier with Powershell.
#Initialize the following with your resource group, storage account, container, and blob names
$rgName = ""
$accountName = ""
$containerName = ""
#Select the storage account and get the context
$storageAccount = Get-AzStorageAccount -ResourceGroupName $rgName -Name $accountName
$ctx = $storageAccount.Context
#list the blobs in a container
$blobs = Get-AzStorageBlob -Container $containerName -Context $ctx
foreach($blob in $blobs)
{
#if tier not equal "Archive"
if($blob.AccessTier -ne "Archive"){
#Change the blob’s access tier to archive
$blob.ICloudBlob.SetStandardBlobTier("Archive")
}
}
Another method uses the BlobBatch.SetBlobAccessTier Method SDK in .Net.
// Get a connection string to our Azure Storage account.
string connectionString = "<connection_string>";
string containerName = "sample-container";
// Get a reference to a container named "sample-container" and then create it
BlobServiceClient service = new BlobServiceClient(connectionString);
BlobContainerClient container = service.GetBlobContainerClient(containerName);
container.Create();
// Create three blobs named "foo", "bar", and "baz"
BlobClient foo = container.GetBlobClient("foo");
BlobClient bar = container.GetBlobClient("bar");
BlobClient baz = container.GetBlobClient("baz");
foo.Upload(new MemoryStream(Encoding.UTF8.GetBytes("Foo!")));
bar.Upload(new MemoryStream(Encoding.UTF8.GetBytes("Bar!")));
baz.Upload(new MemoryStream(Encoding.UTF8.GetBytes("Baz!")));
// Set the access tier for all three blobs at once
BlobBatchClient batch = service.GetBlobBatchClient();
batch.SetBlobsAccessTier(new Uri[] { foo.Uri, bar.Uri, baz.Uri }, AccessTier.Archive);