Which of the following aws services offer block-level storage? (select two)
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The Elastic Compute Cloud (EC2) and the S3 (Simple Storage Services) are two of AWS’ early pioneer services in 2000s and have been the backbone for many other services. Elastic Compute Cloud (EC2) is a virtual machine called an instance that can run all kinds of applications. When you launch an EC2, you will feel almost no difference from your local machine… Show
As the business world becomes smarter, data become vital for any type of business. It serves a key role for competitive advantage because the ability of a company to compete will be driven by how well it leverages data. Your business data are the gears that keep the organization moving. Data storage strategy and its security are necessary for every company or business regardless of its size. Besides, there should be easy and organized access to stored data and information to make the business successful. So, where do you store your data? And how do you secure the data? This is where the solution to AWS cloud storage comes in. AWS cloud storage allows businesses to save files, information and user data on the cloud and saves the untenable costs of maintaining, monitoring, and hosting it on their own. It's not just about storing data but in a secure way. AWS cloud storage ensures data security through data encryption, data backup, easy data recovery, and protection from hackers & data loss. The AWS cloud offers a broad range of storage and cost management options, each of which has its specific use case. The most popular types of Amazon storage options are:
This array of amazon cloud storage options sometimes confuses the organizations when it comes to selecting the right option. Comparing their performance, availability, and price schemes can help to make the decision on which AWS storage option to choose. 1. Amazon Simple Storage Service (S3)Amazon S3, the object storage service is the first publicly available cloud storage service launched by Amazon in 2006. Amazon S3 is a well-known and most used Amazon storage option. It allows you to store an infinite amount of data that can be accessed programmatically via different methods like REST API, SOAP, web interface, and more. It is an ideal storage option for videos, images and application data. Features:
Best used for:
Performance
Durability and Availability
Scalability and Elasticity
PricingThe total price of Amazon S3 usage depends on various factors including the amount of storage used, the number of GET/PUT/LIST/POST/COPY requests and data transfers.
A real-time Use caseA photo-sharing site relies completely on Amazon S3 to store and display photos uploaded by their end-users. Their current end-user customer base is about 8,000, and on average, 4,000 users upload around 60,000 photos per month. The approximate average size of each photo is around 1MB. Each photo is viewed around three times per month. Let’s calculate the tentative costs incurred by this photo sharing site: Total storage per month: 60,000 images x 1MB = 60,000MB = 60GB Storage cost for 60GB: 60GB x $0.03 = $1.80/month Total PUT/POST requests per month: 60,000 requests PUT/POST request cost: 60,000 x ($0.005/1000) = $0.30/month Total GET requests per month: 60,000 photographs x 3 views = 180,000 requests Total GET request cost: 180,000 x ($0.004/1000) = $0.24/month Total data transfer OUT cost from Amazon S3 to the internet: 60GB of data x 3 views x $0.09 per GB = $16.20/ month Total cost = $18.54/month (storage cost + PUT/POST request cost + GET request cost + data transfer cost) 2. Amazon GlacierAmazon Glacier the low-cost storage solution is widely used for data archive and backup. Its data retrieval process is too long; hence, Glacier should only be used for data accessed very infrequently. Best used for
Performance
Durability and Availability
Scalability and Elasticity
Pricing
A real-time Use CaseA Big Data company generates many log files (~5TB per month) from their data analysis that needs to be retained for a long period due to compliance constraints. However, there is no immediate need to access this log data. Therefore, the company decided to go with Amazon Glacier for storage. The estimated price for storing this data in Glacier is around $50 per month. 3. Elastic Block StorageAmazon Elastic Block Storage (EBS) is another common storage option offered by Amazon. Unlike Amazon S3, which is object storage, Amazon EBS volumes provide persistent block-level storage designed for Amazon EC2. It is like an external hard drive attached to your system. Amazon EBS volumes offer different storage sizes from 1GB to 16TB and come in three options:
By default, AWS allows you to have 5,000 EBS volumes, 20TB of Magnetic storage, 20TB of SSD Storage, 20TB of Provisioned IOPS and 40,000 Provisioned IOPS. You can also request AWS if you need more storage. Best used for
Performance
1. Standard volumes
2. Provisioned IOPS
Durability and Availability
Scalability and Elasticity
Pricing
A real-time Use CaseA healthcare company needs to store 7TB of data in the distributed replicated mode, for their shared application and medical records. For this, they use Gluster storage, which allows their application instances to access shared storage. They use two EC2 instances, each with four EBS 1TB SSD volumes. These volumes are configured in distributed replicated mode and the Gluster volume is mounted on other instances that also require access. Now, let’s calculate the cost of this use case: Total storage = 2 instances x 4TB EBS SSD volumes = 8TB EBS SSD volumes Total price = 8TB (8,000GB) x $0.10 per GB/month = $800 per month 4. AWS Storage GatewayAmazon Storage Gateway unites the on-premises software application with cloud-based storage. It provides seamless and secure integration between your on-premises IT environment & the Amazon storage infrastructure. It supports three configurations - Gateway-Cached Volumes, Gateway-Virtual Tape Library (VTL) and Gateway-Stored Volumes. Best used for
PerformanceAs this service sits between Amazon S3, your application, and underlying on-premises storage, its performance depends on the following factors:
Durability and Availability
Scalability and Elasticity
Pricing
A real-time Use CaseA single Tape Gateway constructed with 10 full 100 GB tapes and stores online backups. If you plan for 5 more 100 GB tapes archived in the cloud, and plan to retrieve one of these tapes to restore a backup: The first 100GB is free. In this example, that's one tape stored locally Online (local) tape storage capacity cost = $.023/GB/month Hence, 900 GB’s cost = $20.70/month Offline (cloud archive) tape storage capacity cost = $.004/GB/month Hence, 500 GB’s cost = $2/month Archived tape retrieval cost = $.01/GB, so a full 100 GB tape cost = $3 to retrieve The data transfer cost is $.09/GB, so 100 GB Costs $9 to transfer back to your premises In this scenario, you can protect 1TB of capacity with an additional 500 GB archive or $22.70 per month. Retrieving a single, complete 100 GB virtual tape from your archive and reading the contents would cost $12 each time. Remember that this scenario assumes zero compressions; your compression ratios will reduce these results. Overall, by observing these storage options, it is clear that using amazon S3 provides high availability and durability. Moreover, it can be easily integrated with third-party applications and scales on-demand. However, in terms of performance, EBS remains superior to amazon S3. The company or business in need of storage platform, Amazon is a trustable and tested solution. One can easily find a suitable solution to fulfill his business needs with so many storage options available at AWS. Which AWS service is used for block storage?Amazon Elastic Block Store (Amazon EBS) provides persistent block storage volumes for use with Amazon EC2 instances in the AWS Cloud. Each Amazon EBS volume is automatically replicated within its Availability Zone to protect you from component failure, offering high availability and durability.
Which of the following AWS services offer block level storage select?Amazon EBS provides durable, block-level storage volumes that you can attach to a running instance.
What is block level storage in AWS?There are two block-level storage options for EC2 instances. The first option is an instance store, which consists of one or more instance store volumes exposed as block I/O devices. An instance store volume is a disk that is physically attached to the host computer that runs the EC2 virtual machine (VM).
Which of the following are the storage services offered by the AWS cloud select two?AWS storage services. Data migration. AWS DataSync. Online data transfer service that optimizes network bandwidth and accelerates data movement between on-premises storage and AWS storage. ... . Hybrid cloud storage and edge computing. AWS Storage Gateway. ... . Disaster recovery and backup. AWS Elastic Disaster Recovery (DRS). |
