Azure Storage Services - Part 01
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Azure Storage Services - Part 01
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This is part 1 of the Azure storage series, where we will build our understanding of Azure Storage, and will also learn about the storage data services, and the types of Azure Storage. Last but not least, we will also touch base on securing storage accounts In the second part, we will continue with our demo on creating and utilizing the Azure Storage.
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Azure Storage Services - Part 01
- 1. 1 Understanding Microsoft Azure Storage Understanding Microsoft Azure Storage: Part 01 Agenda Microsoft Azure Storage Azure Storage Basics Azure Storage Data Services Types of Azure Storage Securing Storage Accounts Summary
- 2. 2 Azure Storage Features Understanding Microsoft Azure Storage High availability and durability Data replication across data centers, zones and regions Security Encryption and fine grained access control services of your data Scalability High performance and scalability for high performant applications
- 3. 3 Azure Storage Data Services Understanding Microsoft Azure Storage Blob Storage Files Storage Queue Storage Table Storage Ideal for storing large unstructured files are stored, and can be accessed using the URL over HTTP/HTTPs Ideal for storing highly accessible files accessed over SMB, allowing concurrent access from multiple VM’s Ideal for storing millions of messages in the queue for asynchronous processing Ideal for storing structured NoSQL data with no need to write complex queries
- 4. 4 Azure Storage Data Services Understanding Microsoft Azure Storage Blob Storage • Block Blobs 1. Comprised of blocks 2. Blocks up to 100 MB size 3. 50,000 Blocks 4. Max size is 4.75 TB • Page Blobs 1. Collection of 512-bytes pages 2. Max size is 8 TB 3. VHD’s are stored • Append Blobs 1. Max 4MB block size 2. Up to 50,000 blocks 3. Max size is 195 GB
- 5. 5 Storage Account Kinds Understanding Microsoft Azure Storage Storage Account Type Supported Services Supported Performance Tiers Supported Access Tiers Replication Options Deployment Model1 Encryption2 General-purpose V2 Blob, File, Queue, Table, and Disk Standard, Premium Hot, Cool, Archive LRS, ZRS4, GRS, RA-GRS Resource Manager Encrypted General-purpose V1 Blob, File, Queue, Table, and Disk Standard, Premium N/A LRS, GRS, RA-GRS Resource Manager, Classic Encrypted Block blob storage Blob (block blobs and append blobs only) Premium N/A LRS Resource Manager Encrypted FileStorage (preview) Files only Premium N/A LRS Resource Manager Encrypted Blob storage Blob (block blobs and append blobs only) Standard Hot, Cool, Archive LRS, GRS, RA-GRS Resource Manager Encrypted
- 6. 6 Securing Storage Account Understanding Microsoft Azure Storage Azure Active Directory Integration for Blobs and Queue Azure AD Authorization over SMB for Files Shared Key Authorization Authorization with Shared Access Signature Anonymous Access to Blobs and Containers
- 7. 7 Summary Microsoft Azure Storage Azure Storage Basics Azure Storage Data Services Download the training material from – https://azure-training.com https://www.slideshare.net/neerajks77 Types of Azure Storage Securing Azure Storage Accounts Understanding Microsoft Azure Storage
Notas do Editor
- Hello everyone! Welcome to my course on understanding Microsoft Azure Storage. This is part 1 of the Azure storage series, where we will build our understanding on Azure Storage, and will also learn about the storage data services, and the types of Azure Storage. Last but not the least, we will also touch base on securing storage accounts In the second part we will continue with our demo on creating and utilizing the Azure Storage. Let’s get started…..
- As the name suggests, Microsoft Azure Storage is a cloud storage solution from Microsoft. It provides a highly scalable storage solution for objects, file system, messaging, and tables, which is non relational. Azure Storage is: Highly available and durable. Azure storage ensures that customers data is safe and available in the events of hardware failures or even natural disasters. Azure provides an option for data replication across datacenters or geographical regions for added protection. Data, therefore, still remains highly available. Secure. Azure storage provides high security by data encryption and also provides a fine-grained control over who has access to your data. Scalable. Azure Storage is designed such as to provide high scalability and performance requirements of application. Azure Storage can be accessed from anywhere in the world over either HTTP or HTTPS. It can also be accessed using any programming language of your choice using a well defined mature REST API. Azure Storage additionally supports scripting in PowerShell or CLI. There are other ways as well to access Azure Storage. One is through the Azure portal, and the other one is using storage explorer. Storage Explorer is a Microsoft provided visual tool that can be downloaded on your local systems, which can be connected to your subscription and then you can use it to access your storage. We already discussed that the storage accounts provides high availability through redundancy. Azure provides facilities to replicate the copies of the storage account as per the redundancy opted during it’s creation. There are four different replication options. They are – LRS (Locally Redundant Storage) – It is a low cost replication strategy, and the data is replicated within the same data center ZRS (Zone Redundant Storage) – Data is replicated synchronously across three availability zones in the same regions for high availability and durability GRS (Geo Redundant Storage) – In GRS the data replication happens across different regions. Data cannot be accessed in GRS RA-GRS (Read Access Geo Redundant Storage) – This is similar to GRS as the data is replicated across regions, but with the read access.
- Azure Storage services provides four different kinds of data services, each one being used for specific requirements. They are: Blobs – This storage data service is designed for handling huge amount of unstructured data and is ideal for images, videos, audios, backup files, log files, archives, and other large files. It can be accessed globally using HTTP/HTTPs part from Azure portal and using Rest API, PowerShell, and CLI. Azure blob storage offers different access tiers, which allow you to store blob object data in the most cost-effective manner. They are – Hot – This is used for most frequently used data, where the access cost is the lowest, but incur more costs on storage Cool – It has lower storage costs than the hot tier, but larger than the Archive tier. In this tier, the data will remain for at least 30 days. For ex – short term backups, large datasets for analysis, while more data is being collected, etc. Archive – This tier has the lowest storage costs, but highest access costs. It has the highest data access latency. For accessing the data in the Archive tier, we need to change the tier to either hot or cold. This process is termed as rehydration, and it takes around 15 hours Files – File data service is used to store highly available files accessed using the SMB protocol (Server Message Block). SMB protocol allows multiple VMs to access, read, and write to the files. As with other storage data services, Files can be accessed from anywhere in the world over HTTP/HTTPs. Applications using Azure File services storage are easier to migrate to Azure. Since, file share can be used from different VMs, common tools and utilities can be stored in the files storage. Queues – As the name suggests, Queues are used to store and retrieve millions of messages, each up to 64 KB in size, for asynchronous processing. Tables – This data service from Azure storage stores structured NoSQL data (non relational) with a schemaless design. It is easier to adapt as per requirements. This data service is fast and cost effective. It may contain any number of tables, up to the storage account limit. It can be used to service web applications, and can evolve along with the applications. It does not need complex queries to be written, with joins, foreign keys, stored procedures, etc. Azure Table storage data service is now a part of the Azure Cosmos DB, which provides throughput, global distribution, etc.
- We should spend some more time understanding Azure Blob storage service. There are three types of blobs, which you have to specify when you are creating the blobs. They are: Block Blobs – Block blobs comprises of block. Each block can be of different sizes, but a maximum of 100MB. There can be a maximum of 50,000 block, and the maximum size of the block blobs is 4.75 TB. Block blobs include features helping manage large files over the network. Multiple files can be uploaded in parallel in block blobs for decreased upload time. Page Blobs – Page blobs are the collection of 512-bytes pages for random read and write process. The maximum size of the page blob is 8 TB and is majorly used to store the VHD’s Append Blobs – Append blobs have a maximum block size of 4 MB, and can store up to 50,000 blocks. The maximum size of the append blob is195 GB. Once the blob has been created, it is not possible to change it’s type. One feature these blob types exhibit is that the committed changes are reflected immediately. These blobs can be leased for the write access, and the calls to the blob with the current lease id is only capable to write to the blob. Also, every version of the blob has a unique tag, which is used to write to that blob version.
- Let us now take a look on the different kinds of storage accounts. Each king provides different kinds of features, with different pricing model. When choosing a storage account kind, we need to compare the features and the pricing for different account types before consideration. I have listed them in the tabular format here, and let us understand one at a time. General-purpose v2 accounts: Basic storage account type for blobs, files, queues, and tables. Recommended for most scenarios using Azure Storage General-purpose v1 accounts: Similar to the legacy account type for blobs, files, queues, and tables. Use general-purpose v2 accounts instead when possible Block blob storage accounts: Blob-only storage accounts with premium performance characteristics. Recommended for scenarios with high transactions rates, using smaller objects, or requiring consistently low storage latency FileStorage (preview) storage accounts: Files-only storage accounts with premium performance characteristics. Recommended for enterprise or high performance scale applications. This is in preview and only available when the performance tier is chosen as Premium Blob storage accounts: Blob-only storage accounts. Does not provide files, queues and tables storage as the name suggests.
- It is very important for us to discuss on the security aspects of the storage accounts and how we can protect our data. We can achieve security by implementing authorization and data encryption for Azure storage. Azure Active Directory (Azure AD) integration for blob and queue data. We can authenticate and authorize Blob and Queue services with Azure AD credentials using the Role Based Access Control (RBAC). Azure AD authorization over SMB for Azure Files (preview). We can use the Azure AD ID for accessing Azure Files as it uses the identity-based authorization over SMB (Server Message Block) through Azure AD. Authorization with Shared Key. Azure Blob, Queue, Table and Files also support authorization with Shared Key. There are two keys that are created, which are primary and secondary keys, and either one can be used to have complete access. The request header is signed using the Shared Key. Authorization using shared access signatures (SAS). A shared access signature (SAS) is a time bound string containing the security token which is appended to the URI for a storage resource. This gives access to the resource for a limited period of time after which the access is automatically revoked. Anonymous access to containers and blobs. We can also configure blobs and containers to have the anonymous access, which means that no permission is required and anyone can access them. Apart from the above, encryption also helps protecting the data to meet organizational security policies. The encryption and decryption happens automatically when the data is written or retrieved. This is termed as Storage Service Encryption (SSE) at rest, which is present in all tiers, be it standard or premium. Another type of encryption is the client-side encryption. In this, we can programmatically encrypt the data using the storage client libraries. It can encrypt the data before sending and decrypt the data back while the data is read.