In this article we review various disaster recovery strategies available in Amazon Web Services (AWS) and we explain the pricing associated with each option.

What is AWS Disaster Recovery?

Preventing unforeseeable disasters that cause business outages and product loss is one of the most significant challenges for IT experts today. The AWS Disaster Recovery Plan (DRP) helps you store and restore data to minimize disasters that may cause loss of infrastructure, plans, and data. While there are many DR strategy initiatives in the market, AWS offers several service options within its own ecosystem that ensure business continuity.

Why do we use AWS Disaster Recovery?

  • Financial low cost
  • Fast setup time
  • Flexible locations
  • Scalability for services
  • Security 
  • High performance
  • High availability
  • All on a single cloud
  • Ready and standby
  • High reliability
  • High elasticity
  • Fewer dependencies
  • Industry standards
  • Efficient backup
  • Easy recovery
  • Effective handling
  • Easy testing
  • Effective monitoring
  • Secure user access
  • Automation

Top 10 Disaster Recovery Use Cases & AWS Solutions

  1. DR for applications hosted in AWS: AWS Regions, Availability Zones
  2. DR for applications hosted outside of AWS: DataSync, AWS Import/Export
  3. Data Backup and Restore: AWS BackUp, AWS Import/Export, EBS
  4. Business Continuity Planning (BCP): Amazon WorkSpaces, AWS BackUp, CloudEndure, S3
  5. Data Lakes and Analytics: Data Movement, Data Lake, Analytics, Machine Learning
  6. Infrastructure Modernization: Server Migration Service, RDS, Elastic Beanstalk
  7. Data Archive: S3 Storage Classes, Storage Gateway, Snow Family, DataSync, Glacier
  8. Data Migration and Transfer: Application Discovery Service, DataSync, Database Migration Service, Server Migration Service,
  9. Data Replication: RDS, DynamoDB, S3, EC2, EC2 VM Import Connector, CloudFormation
  10. Data Protection: Direct Connect, VPC, Elastic Load Balancing, Route 53

How to Measure Disaster Recovery

There are two main measurements to consider when developing a disaster recovery plan:

  1. Recovery Point Objective (RPO): defines the acceptable maximum time interval (representing potential data loss) between creating recovery points.
  2. Recovery Time Objective (RTO): defines the acceptable maximum delay between the interruption and restoration of service.
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AWS Disaster Recovery Methods

  • Backup and Restore: This method is a simple and straightforward way to backup and restore data as needed, however,  it can be time-consuming due to none of your data being on standby.
  • Pilot Light: This method keeps critical applications and data at-the-ready so that it can be quickly retrieved if needed.
  • Warm Standby: This method always keeps a duplicate version of your business’ core elements running on standby, which makes for a little downtime and an almost seamless transition.
  • Multi-Site Solution: This method fully replicates the data/applications between two or more active locations and splits your traffic between them. Interruptions simply trigger traffic to be rerouted to the unaffected area, resulting in almost zero downtime. But running two separate environments incurs much higher costs.

Recovery Method Comparison

MetricBackup & RestorePilot LightWarm StandbyMulti-Site
RTO/RPOHours10s of MinutesMinutesReal-Time
UsageLower priority use casesLower RTO/RPO requirementsCore applications and services.Mission-critical applications and services
SolutionsCloud storage, Backup solutionsDatabase services, Replication solutionsCloud storage, Databases services, Replication solutionsDatabase services, Replication solutions
Cost$ to $$$$$$$$$$$

Disaster Recovery Solutions Offered by AWS

In this section, we will review the services offered by AWS intended for disaster recovery planning. We also explain pricing associated with each offering and review pricing examples in cases where the pricing is more complex. 

The AWS services covered in this section are:

  1. RDS Replication (Aurora, PostgreSQL, MySQL, Maria, Oracle)
  2. Non-relational Database Replication (DynamoDB)
  3. S3 object storage replication (Cross-region, same-region, replication time control)
  4. File system replication (DataSync)
  5. Backup 
  6. Storage Gateway 
  7. Snow family 
  8. CloudEndure (Block storage replication)
  9. Transfer family
  10. Database and server migration service

Amazon Relational Database (RDS) Replication

Amazon RDS makes it easy to manage relational databases in the cloud. It provides cost-efficient, resizable capacity and automates administrative tasks like hardware provisioning, database setup, patching, and backups. Amazon RDS is available on several database instance types optimized for memory, performance, or I/O and provides you with six database engines to choose from, including Amazon Aurora, PostgreSQL, MySQL, MariaDB, Oracle Database and SQL Server.

Aurora Data Replication

AWS provides three replication options with Aurora:

  1. Aurora replicas: Aurora Replicas act as independent endpoints in an Aurora DB cluster and are primarily used to scale read operations or increase availability. Up to 15 Aurora Replicas can be used across any Availability Zones covered by a DB cluster within an AWS Region.
  2. Aurora MySQL replication: There are 3 replication options for Aurora MySQL.
    • Two DB clusters in different AWS Regions.
    • Two DB clusters in the same AWS Region.
    • One master Amazon RDS MySQL DB instance with an Aurora MySQL DB cluster.
  3. Aurora PostgreSQL replication: Set up replication between a master Amazon RDS PostgreSQL DB instance with an Aurora PostgreSQL DB cluster.
DB ServicePricing OptionUS East (N. Virginia) PricingEurope (Frankfurt) Pricing
Database Instances – MySQL CompatibleOn-Demand Instance0.041 per Hour0.048 per Hour
Database Instances – MySQL CompatibleT3 CPU Credits$0.09 per vCPU Hour$0.09 per vCPU Hour
Database Instances – MySQL CompatibleServerless$0.06 per Aurora Capacity Unit Hour$0.07 per Aurora Capacity Unit Hour
Database Instances – MySQL CompatibleReserved Instance$0.033 per Hour$0.036 per Hour
Database Instances – PostgreSQL CompatibleOn-Demand Instance$0.082 per Hour$0.096 per Hour
 Database Instances – PostgreSQL CompatibleServerless$0.06 per Aurora Capacity Unit Hour$0.07 per Aurora Capacity Unit Hour
 Database Instances – PostgreSQL CompatibleReserved Instance$0.064 per Hour$0.072 per Hour
Database Storage and IOsStorage Rate$0.10 per GB-month$0.119 per GB-month
Database Storage and IOsI/O Rate$0.20 per 1 million requests$0.22 per 1 million requests
Global Database – Replicated Write I/OsReplicated Write I/Os$0.20 per million replicated write I/Os$0.22 per million replicated write I/Os
Backup StorageBackup Storage$0.021 per GB-month$0.023 per GB-month
BacktrackChange Records$0.012 per 1 million Change Records$0.014 per 1 million Change Records
Snapshot ExportCharge per GB of snapshot size:0.01 per GB0.011 per GB
Data TransferData Transfer IN to Amazon RDS from Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to Internet$0.00 per GB Month$0.00 per GB Month
Data TransferData Transfer OUT from Amazon RDS to …$0.02 per GB$0.02 per GB

PostgreSQL Data Replication

AWS provides three replication options with PostgreSQL:

  1. Intra-Region replication: RDS PostgreSQL uses Postgres native streaming replication to create a read-replica for source instances in the same AWS Region. Any data changes are streamed to the read-replica using the streaming replication.
  2. Cross-region replication: RDS PostgreSQL also supports cross-region replication. In addition to scaling read queries, cross-region read-replicas provide solutions for disaster recovery and database migration between AWS Regions.
  3. Logical replication: You can set up logical replication slots at an RDS PostgreSQL instance and stream database changes. AWS Database Migration Service (AWS DMS) exhibits the most common use case of logical replication.
DB ServicePricing OptionUS East (N. Virginia) PricingEurope (Frankfurt) Pricing
On-Demand DB InstancesSingle-AZ Deployment$0.018 per Hour$0.021 per Hour
On-Demand DB InstancesMulti-AZ Deployment$0.036 per Hour$0.042 per Hour
On-Demand DB InstancesT3 CPU Credits$0.075 per vCPU Hour$0.075 per vCPU Hour
Reserved InstancesSingle-AZ Deployment$0.013 per Hour$0.014 per Hour
Reserved InstancesMulti-AZ Deployment$0.026 per Hour$0.029 per Hour
General Purpose (SSD) Storage in Single AZStorage Rate$0.125 per GB-month$0.149 per GB-month
General Purpose (SSD) Storage in Single AZProvisioned IOPS Rate$0.10 per IOPS-month$0.119 per IOPS-month
General Purpose (SSD) Storage in Multi AZStorage Rate$0.20 per GB-month$0.238 per GB-month
General Purpose (SSD) Storage in Multi AZI/O Rate$0.10 per 1 million requests$0.11 per 1 million requests
Backup StorageBackup Storage$0.103 per GB-month$0.103 per GB-month
Snapshot ExportCharge per GB of snapshot$0.0100$0.0110
Data TransferData Transfer IN to Amazon RDS from Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to Internet$0.00 per GB per Month$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to …$0.02 per GB per Month$0.02 per GB per Month

MySQL Data Replication

 AWS provides three replication options with MySQL:

  1. MySQL Read Replicas: You can create up to 5 read-replicas from one DB instance. For replication to operate effectively, each read-replica should have the same amount of compute and storage resources as the source DB instance. 
  2. GTID-based Replication: You can use GTID-based replication to replicate data with Amazon RDS MySQL read-replicas or with an external MySQL database.
  3. MySQL or MariaDB Replication: You can set up replication between an Amazon RDS MySQL or MariaDB DB instance and a MySQL or MariaDB instance that is external to Amazon RDS.
DB ServicePricing OptionUS East (N. Virginia) PricingEurope (Frankfurt) Pricing
On-Demand DB InstancesSingle-AZ Deployment$0.017 per Hour$0.02 per Hour
On-Demand DB InstancesMulti-AZ Deployment$0.034 per Hour$0.04 per Hour
On-Demand DB InstancesT3 CPU Credits$0.075 per vCPU-Hour.$0.075 per vCPU-Hour.
Reserved InstancesSingle-AZ Deployment$0.012 per Hour$0.014 per Hour
Reserved InstancesMulti-AZ Deployment$0.024 per Hour$0.029 per Hour
General Purpose (SSD) StorageSingle-AZ Deployment$0.115 per GB-month$0.137 per GB-month
General Purpose (SSD) StorageMulti-AZ Deployment$0.23 per GB-month$0.273 per GB-month
Provisioned IOPS (SSD) Storage in Single AZStorage Rate$0.125 per GB-month$0.149 per GB-month
Provisioned IOPS (SSD) Storage in Single AZProvisioned IOPS Rate$0.10 per IOPS-month$0.119 per IOPS-month
Provisioned IOPS (SSD) Storage in Multi AZStorage Rate$0.25 per GB-month$0.298 per GB-month
Provisioned IOPS (SSD) Storage in Multi AZProvisioned IOPS Rate$0.20 per IOPS-month$0.238 per IOPS-month
Magnetic Storage in Single AZStorage Rate$0.10 per GB-month$0.119 per GB-month
Magnetic Storage in Single AZI/O Rate$0.10 per 1 million requests$0.11 per 1 million requests
Magnetic Storage in Multi AZStorage Rate$0.20 per GB-month$0.238 per GB-month
Magnetic Storage in Multi AZI/O Rate$0.10 per 1 million requests$0.11 per 1 million requests
Backup StorageBackup Storage$0.103 per GB-month$0.103 per GB-month
Snapshot ExportCharge per GB of snapshot size:$0.0100$0.0110
Data TransferData Transfer IN to Amazon RDS from Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to …$0.02 per GB$0.02 per GB

MariaDB Data Replication

AWS provides four replication options with MariaDB:

  1. MariaDB Read-Replicas:  You can create up to 5 read-replicas from one DB instance. For replication to operate effectively, each read-replica should have the same amount of compute and storage resources as the source DB instance.
  2. GTID-based Replication:  You can set up GTID-based replication from an external MariaDB instance of version 10.0.24 or greater into an Amazon RDS MariaDB DB instance.
  3. Replication with MySQL/MariaDB instances running external to Amazon RDS:  You can set up replication between an Amazon RDS MariaDB DB instance and a MySQL or MariaDB instance that is external to Amazon RDS.
  4. Importing to an Amazon RDS MySQL/MariaDB DB instance with reduced downtime and exporting data from a MySQL DB:  You can configure replication to import databases from a MySQL or MariaDB instance that is external to Amazon RDS, or to export databases to such instances.
DB ServicePricing OptionUS East (N. Virginia) PricingEurope (Frankfurt) Pricing
On-Demand DB InstancesSingle-AZ Deployment$0.017 per Hour$0.02 per Hour
On-Demand DB InstancesMulti-AZ Deployment$0.034 per Hour$0.04 per Hour
On-Demand DB InstancesT3 CPU Credits$0.075 per vCPU-Hour$0.075 per vCPU-Hour
Reserved InstancesSingle-AZ Deployment$0.012 per Hour$0.014 per Hour
Reserved InstancesMulti-AZ Deployment$0.024 pe Hour$0.029 per Hour
General Purpose (SSD) StorageSingle-AZ Deployment$0.115 per GB-month$0.137 per GB-month
General Purpose (SSD) StorageMulti-AZ Deployment$0.23 per GB-month$0.273 per GB-month
Provisioned IOPS (SSD) Storage in Single AZStorage Rate$0.125 per GB-month$0.149 per GB-month
Provisioned IOPS (SSD) Storage in Single AZProvisioned IOPS Rate$0.10 per IOPS-month$0.119 per IOPS-month
Provisioned IOPS (SSD) Storage in Multi AZStorage Rate$0.25 per GB-month$0.298 per GB-month
Provisioned IOPS (SSD) Storage in Multi AZProvisioned IOPS Rate$0.20 per IOPS-month$0.238 per IOPS-month
Magnetic Storage in Single AZStorage Rate$0.10 per GB-month$0.119 per GB-month
Magnetic Storage in Single AZI/O Rate$0.10 per 1 million requests$0.11 per 1 million requests
Magnetic Storage in Multi AZStorage Rate$0.20 per GB-month$0.238 per GB-month
Magnetic Storage in Multi AZI/O Rate$0.10 per 1 million requests$0.11 per 1 million requests
Backup StorageBackup Storage$0.103 per GB-month$0.103 per GB-month
Snapshot ExportCharge per GB of snapshot size:$0.0100$0.0100
Data TransferData Transfer IN to Amazon RDS from Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to …$0.02 per GB$0.02 per GB

Oracle Data Replication

AWS provides two replication options with Oracle:

  1. Read-only Replicas: This is the default and Active Data Guard transmits and applies changes from the source database to all read replica databases. You can create up to 5 read-replicas from one source DB instance.
  2. Mounted Replicas:  The replication uses Oracle Data Guard, but the replica database doesn’t accept user connections. The primary use for mounted replicas is cross-region disaster recovery.
DB ServicePricing OptionUS East (N. Virginia) PricingEurope (Frankfurt) Pricing
On-Demand DB Instances (License Included)Single AZ$0.035 per Hour$0.038 per Hour
On-Demand DB Instances (License Included)Multi AZ$0.07 per Hour$0.076 per Hour
On-Demand DB Instances (License Included)T3 CPU Credits$0.075 per vCPU-Hour.$0.075 per vCPU-Hour.
On-Demand DB Instances (Bring Your Own License)Single AZ$0.017 per Hour$0.02 per Hour
On-Demand DB Instances (Bring Your Own License)Multi AZ$0.034 per Hour$0.04 per Hour
On-Demand DB Instances (Bring Your Own License)T3 CPU Credits$0.075 per vCPU-Hour$0.075 per vCPU-Hour
Reserved Instances (License Included)Single AZ$0.022 per Hour$0.027 per Hour
Reserved Instances (License Included)Multi AZ$0.044 per Hour$0.055 per Hour
Reserved Instances (Bring Your Own License)Single AZ$0.011 per Hour$0.015 per Hour
Reserved Instances (Bring Your Own License)Multi AZ$0.021 per Hour$0.029 per Hour
General Purpose (SSD) Storage in Single AZGeneral Purpose (SSD) Storage$0.115 per GB-month$0.137 per GB-month
General Purpose (SSD) Storage in Single AZProvisioned IOPS Rate$0.125 per GB-month$0.149 per GB-month
General Purpose (SSD) Storage in Single AZMagnetic Storage$0.10 per GB-month$0.119 per GB-month
General Purpose (SSD) Storage in Multi AZGeneral Purpose (SSD) Storage$0.23 per GB-month$0.273 per GB-month
General Purpose (SSD) Storage in Multi AZProvisioned IOPS Rate$0.25 per GB-month$0.298 per GB-month
General Purpose (SSD) Storage in Multi AZMagnetic Storage$0.20 per GB-month$0.238 per GB-month
Backup StorageBackup Storage$ $0.103 per GB-month.$ $0.103 per GB-month.
Data TransferData Transfer IN to Amazon RDS from Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to ….$0.02 per GB$0.02 per GB

SQL Server Data Replication

AWS provides one replication option with SQL Server:

  1. MySQL Read-Replicas: Use these read-replicas to configure replication between Amazon RDS DB instances.
DB ServicePricing OptionUS East (N. Virginia) PricingEurope (Frankfurt) Pricing
On-Demand DB InstancesExpress$0.044 per Hour$0.05 per Hour
On-Demand DB InstancesWeb$ 0.139 per Hour$0.143 per Hour
On-Demand DB InstancesStandard$1.044 per Hour$1.081 per Hour
On-Demand DB InstancesEnterprise$2.262 per Hour$2.295 per Hour
Reserved InstancesExpress$0.028 per Hour$0.032 per Hour
Reserved InstancesWeb$0.088 per Hour$0.09 per Hour
Reserved InstancesStandard$0.987 per Hour$1.022 per Hour
Reserved InstancesEnterprise$2.242 per Hour$2.291 per Hour
General Purpose (SSD) Storage in Single AZGeneral Purpose (SSD) Storage$0.115 per GB-month$0.137 per GB-month
General Purpose (SSD) Storage in Single AZProvisioned IOPS Rate$0.125 per GB-month$0.149 per GB-month
General Purpose (SSD) Storage in Single AZMagnetic Storage$0.10 per GB-month$0.119 per GB-month
General Purpose (SSD) Storage in Multi AZGeneral Purpose (SSD) Storage$0.23 per GB-month$0.273 per GB-month
General Purpose (SSD) Storage in Multi AZProvisioned IOPS Rate$0.25 per GB-month$0.298 per GB-month
General Purpose (SSD) Storage in Multi AZMagnetic Storage$0.20 per GB-month$0.238 per GB-month
Backup StorageBackup Storage$0.103 per GB-month.$0.103 per GB-month.
Data TransferData Transfer IN to Amazon RDS from Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to Internet$0.00 per GB$0.00 per GB
Data TransferData Transfer OUT from Amazon RDS to ….$0.02 per GB$0.02 per GB

Amazon Non-Relational Database Replication

Amazon DynamoDB is a non-relational database for storing key-value pairs and documents that delivers single-digit millisecond performance at any scale. It’s a fully managed, multi-regional, multi-meter, durable database with built-in security, backup, restore, and in-memory caching for internet-scale applications.

AWS DynamoDB Data Replication

 AWS provides two replication options with DynamoDB:

  1. Cross-Region Replication: Create tables that get automatically replicated across other AWS Regions, with full support for multi-active writes. This service enables propping up massive applications for a global user base without having to manage the replication process.
  2. Multi-Region Replication: Amazon DynamoDB Global Tables provide a fully managed solution for deploying a multi-regional, multi-active database, without having to build and maintain your own replication solution.
DB ServicePricing OptionOn-Demand Capacity – US East (N. Virginia) PricingOn-Demand Capacity – Europe (Frankfurt) PricingProvisioned Capacity – US East (N. Virginia) PricingProvisioned Capacity – Europe (Frankfurt) Pricing
Read and write requestsWrite request units$1.25 per million write request units$1.525 per million write request units$0.00065 per WCU$0.000793 per WCU
Read and write requestsRead request units$0.25 per million read request units$0.305 per million read request units$0.00013 per RCU$0.0001586 per RCU
Data StorageRaw byte size of the data you upload plus a per-item storage overhead of 100 bytes to account for indexingFirst 25 GB stored per month is free. $0.25 per GB-month thereafter.First 25 GB stored per month is free. $0.306 per GB-month thereafter.First 25 GB stored per month is free. $0.25 per GB-month thereafter.First 25 GB stored per month is free. $0.306 per GB-month thereafter.
Backup and restoreContinuous backups (PITR)$0.20 per GB-month$0.2448 per GB-month$0.20 per GB-month$0.2448 per GB-month
Backup and restoreOn-demand backup$0.10 per GB-month$0.1224 per GB-month$0.10 per GB-month$0.1224 per GB-month
Backup and restoreRestoring a table$0.15 per GB$0.1836 per GB$0.15 per GB$0.1836 per GB
Global tablesReplicated write request unit$1.875 per million replicated write request units$2.2875 per million replicated write request units$0.000975 per rWCU per hour$0.0011895 per rWCU per hour
DynamoDB Accelerator (DAX)DAX capacity$0.04 Per Hour$0.045 Per Hour$0.04 Per Hour$0.045 Per Hour
DynamoDB StreamsRead request unitsThe first 2,500,000 DynamoDB Streams read request units are free. $0.02 per 100,000 thereafter.The first 2,500,000 DynamoDB Streams read request units are free. $0.0245 per 100,000 thereafter.The first 2,500,000 DynamoDB Streams read request units are free. $0.02 per 100,000 thereafter.The first 2,500,000 DynamoDB Streams read request units are free. $0.0245 per 100,000 thereafter.
Data TransferData transfer IN$0.00 per GB$0.00 per GB$0.00 per GB$0.00 per GB
Data TransferData transfer OUT$0.09 per GB$0.09 per GB$0.09 per GB$0.09 per GB

Amazon Object Storage Replication

Amazon Simple Storage Service (S3) Replication is a low-cost feature that replicates objects between buckets while offering the most flexibility and functionality for cloud storage.  You can even configure Amazon S3 to automatically replicate S3 objects across different AWS Regions.

  1. Amazon S3 Cross-Region Replication (CRR): You can replicate objects, including all of their metadata and tags, into other AWS Regions for disaster prevention. S3 CRR replicates objects from a source bucket in one AWS Region into a destination bucket located in another AWS Region.
  2. Amazon S3 Same-Region Replication (SRR): SRR automatically replicates data between buckets from the same AWS Region.  You can set up replication at several levels using S3 object tags. SRR also supports making  a second copy of your data within the same AWS Region.
  3. Amazon Replication Time Control: Amazon S3 replication time control helps business requirements for data replication and provides visibility into Amazon S3 replication activity. Replication time control replicates most objects that you upload to Amazon S3 in seconds, and 99.99% of those objects within 15 minutes.
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Simple Storage Replication Pricing

For S3 Cross-Region Replication and Same Region Replication, you pay the S3 charges for storage in the selected destination S3 storage class, the storage charges for the primary copy, replication PUT requests and applicable infrequent access storage retrieval fees. For CRR, you also pay for inter-region Data Transfer OUT from S3 to your destination region. When you use S3 Replication Time Control, you also pay a Replication Time Control Data Transfer fee ($0.015 per GB) and S3 Replication Metrics charges that are billed at the same rate as Amazon CloudWatch custom metrics. Storage and PUT request pricing for the replicated copy is based on the destination AWS Region, while pricing for inter-region data transfers is based on the source AWS Region. Refer to AWS S3 pricing for more information.

Example:

  • Source S3 bucket (N. Virginia): 500 GB
  • Destination Region: US West (N. California)
  • PUT requests at destination: 500
  • S3 Standard storage cost: 500 GB * $0.023 = $11.50
  • S3 Standard storage cost for replicated data: 500 GB * $0.023 = $11.50
  • Data transfer costs: 500 GB * $0.02 (per GB data transferred) = $10.00
  • PUT request pricing: $0.005 (per 1000 requests) / 1000 = $0.000005
  • Cost of replicated PUT requests: 500 * $0.000005 = $0.0025
  • Total: $11.50 + $11.50 + $10.00 + $0.0025 = $33.025

AWS File System Replication

AWS DataSync enables quick migration for large amounts of data online between on-premises storage and Amazon S3, Amazon Elastic File System (EFS) or Amazon FSx for Windows File Server. DataSync eliminates or automatically handles many tasks, such as: scripting copy jobs, scheduling and monitoring transfers, validating data, and optimizing network utilization.

DataSync Pricing

Example 1: Archive 100 TB into Amazon S3

If you migrate 100 TB of files into Amazon S3  (US East Ohio), with an average individual file size of 16 MB, it would cost you the following to use DataSync:

  • (100 TB copied into S3 * 1024 GB * $0.0125/GB) + (1 S3 LIST request * $0.005 / 1000) + (100 TB / 16 MB S3 PUT requests * $0.005 / 1000)
  • = $1280 + $0 + $16.38
  • = $1312.76

Example 2: Migrate 100 TB to Amazon FSx for Windows File Server

If you migrate 100 TB from your Windows File Servers hosted in your own data center to Amazon FSx, it would cost you the following to use DataSync:

  • (100 TB copied into Amazon FSx for Windows File Server * 1024 GB * $0.0125/GB)
  • = $1,280.00

Example 3: Ongoing data transfers once your data is hosted in AWS

If you are hosted in AWS and transfer 1 TB of data into Amazon EFS,  your cost for a month with 31 days would be:

  • (1 TB copied into EFS * 1024 GB * $0.0125/GB) * 31 days
  • = $396.80

Example 4: If you replicate your files for the purpose of disaster recovery

If you setup a data replication job that copies a 100 TB file system into Amazon EFS in Asia Pacific (Sydney) once and then replicates 1 TB of changes every day, your charges for the initial data transfer and the 31 following days would be:

  • 100 TB * 1024 GB * $0.0125/GB = $1280 for the first bulk data transfer
  • + 1 TB * 1024 GB * $0.0125/GB * 31 days 
  • = $396.80 per month for each following months

AWS Backup

AWS Backup is a fully managed backup service that centralizes and automates the backup of data across AWS services. Use AWS Backup to  configure backup policies and monitor backup activity for resources such as Amazon EBS volumes, Amazon EC2 instances, Amazon RDS databases, Amazon DynamoDB tables, Amazon EFS file systems and AWS Storage Gateway volumes.

AWS Backup Pricing

  • Storage Pricing: Billing is based on the average storage space used in a given month (in GB). 
  • Restoration Pricing: Billing is based on the amount of data restored in a given month (in GB).

Example:

Let’s assume that you have instances of Amazon EFS in the US East (N. Virginia) region. If you back up 400 GB of Amazon EFS storage during the first 15 days of the month, and then another 1 TB for the last 15 days of the same month, you would have the following backup storage costs:

  • Total usage (GB-Hours):  [500 GB x 15 days x (24 hours / day)] + [1000 GB x 15 days x (24 hours / day)] = 540,000 GB-Hours

We then convert GB-Hours to GB-Months by dividing it by 720, which is the average number of hours in a month to obtain the value of 750 GB-Months:

  • Total Monthly Storage Charge:  750 GB-Month x $0.05 = $37.50

Now, let’s assume you restored 10 backups of 1GB during that same month. At the end of the month, you would have the following backup restore volume, in GB:

  • Total Usage: 10 restores x 1 GB = 10 GB
  • Total Monthly Charges: 10 GB x $0.02 = $0.20
  • Total Monthly AWS Backup Bill: $37.50 + $0.20 = $37.70

AWS Storage Gateway

AWS Storage Gateway is a hybrid-cloud storage service that provides on-premises access to near-unlimited cloud storage. You can use Storage Gateway to simplify storage management and reduce costs for several use cases such as: migrating backups to the cloud, using local file shares backed by cloud storage, and providing low-latency access to data for local applications. AWS Storage Gateway pricing listed here.

AWS Snow Family

AWS Snow Family helps run operations in modest, non-data center environments and in locations with inconsistent network connectivity. These services assist in physically transporting data in and out of AWS and consists of AWS Snowcone, AWS Snowball, and AWS Snowmobile. Snow Family devices are owned by AWS and compliment AWS security, monitoring, storage management, and computing capabilities.

Snow Family Pricing

Refer to individual pricing and examples of AWS Snowcone, AWS Snowball, and AWS Snowmobile.

CloudEndure Disaster Recovery

CloudEndure Disaster Recovery continuously replicates machines,  including their operating system, their system state configuration(s), any databases or applications, and all files into a staging area in your target AWS account and Region. With CloudEndure Disaster Recovery, you can automatically launch thousands of your machines in their fully provisioned state in minutes. CloudEndure Disaster Recovery is often used to protect critical databases and enterprise applications.

CloudEndure Pricing

Hourly rate per source server is $0.028 per-host,  per-hour

AWS Transfer Family

AWS Transfer Family supports file transfers directly in and out of Amazon S3. This service supports Secure File Transfer Protocol (SFTP), File Transfer Protocol over SSL (FTPS), and File Transfer Protocol (FTP).

AWS Database and Server Migration Service

AWS Database Migration Service supports database migration into AWS while keeping the source database fully operational during the process. This minimizes downtime to reliant applications.

This service is agentless, making  it easier to migrate on-premise workloads into AWS. You can also automate, schedule, and track the replications of live server volumes.

Disaster Recovery and AWS Reservation

A common question that arises in the context of AWS disaster recovery is whether Reserved Instances (RI) help with planning. The answer is that only a zonal reservation defined as a reservation made with a scope limited to a specific Availability Zone (AZ), sets aside capacity inside of the AWS data center. In other words, if a disaster strikes a specific AWS Availability Zone (defined as a specific physical data center location) which in turn would increase demand for capacity in other AWS regions and Availability Zones, then only a zonal reservation would guarantee room for your workload in a new AZ. Any other types of reservation or Savings Plan contracts will help you lower your spending, but are not designed to reserve capacity in an AWS data center to help with disaster recovery planning.

A comprehensive approach to hybrid cloud management

Only solution with automated discovery, testing, provisioning, security, and cost management

A `single pane`for infrastructure spanning on-premise, private cloud, and multiple public clouds

A comprehensive framework that extends your existing tool investments and fills the gaps

Conclusion

As you can see, there are many ways to protect your service quality and data in AWS. The most common option is to replicate your data so that you avoid any loss during an outage. The right solution for your use case depends on your budget as well as your application’s mission criticality and architecture.  

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