Storage account names – Implement and manage storage – AZ-104 Study Guide

Storage account names

When you name an Azure storage account, you need to remember these points:

• The storage account name must be globally unique across all existing storage account names in Azure.
• The name must be between 3 and 24 characters and can contain only lowercase letters and numbers.

Performance tiers

When creating a storage account, you must choose between the Standard and Premium performance tiers. This setting cannot be changed later.

• Standard This tier supports all storage services: blobs, tables, files, queues, and unmanaged Azure virtual machine disks. It uses magnetic disks to provide cost-efficient and reliable storage.
• Premium This tier is designed to support workloads with greater demands on I/O and is backed by high-performance SSD disks. Premium storage accounts support block blobs, page blobs, and file shares.

Account types

There are three possible storage account types for the Standard tier: StorageV2 (General- Purpose V2), Storage (General-Purpose V1), and BlobStorage. There are four possible storage account types for the Premium tier: StorageV2 (General-Purpose V2), Storage (General- Purpose V1), BlockBlobStorage, and FileStorage. Table 2-1 shows the features for each kind of account. Key points to remember are

• The Blob Storage account is a specialized storage account used to store Block Blobs and Append Blobs. You can’t store Page Blobs in these accounts; therefore, you can’t use them for unmanaged disks.
• Only General-Purpose V2 and Blob Storage accounts support the Hot, Cool, and Archive access tiers.

General-Purpose V1 and Blob Storage accounts can both be upgraded to a General-Purpose V2 account. This operation is irreversible. No other changes to the account kind are supported.

NOTE LEGACY STORAGE ACCOUNT TYPES

Standard General-Purpose V1 and standard Blob Storage accounts are considered legacy storage accounts, and they can be deployed but are not recommended by Microsoft. You can find more information about legacy storage account types at https://learn.microsoft.com/en-us/azure/storage/common/storage-account-overview#legacy-storage-account-types.

TABLE 2-1 Storage account types and their supported features

	General- Purpose V2	General- Purpose V1	Blob Storage	Block Blob Storage	File Storage
Services supported	Blob, File, Queue, Table	Blob, File, Queue, Table	Blob (Block Blobs and Append Blobs only)	Blob (Block Blobs and Append Blobs only)	File only
Unmanaged Disk (Page Blob) support	Yes	Yes	No	No	No

	General- Purpose V2	General- Purpose V1	Blob Storage	Block Blob Storage	File Storage
Supported Performance Tiers	Standard Premium	Standard Premium	Standard	Premium	Premium
Supported Access Tiers	Hot, Cool, Archive	N/A	Hot, Cool, Archive	N/A	N/A
Replication Options	LRS, ZRS, GRS, RA-GRS, GZRS, RA-GZRS	LRS, GRS, RA-GRS	LRS, GRS, RA-GRS	LRS, ZRS	LRS, ZRS