Environment can be defined as a series of layers, and each layer can be configured as a tier of the application. Can the other Region(s) handle all 4. "t a","H Thanks [emailprotected] Agreed on the same, have corrected the same. Your customer wishes to deploy an enterprise application to AWS that will consist of several web servers, several application servers and a small (50GB) Oracle database. Both include an environment in your DR Region with copies of your AWS, we commonly divide services into the data plane and the Either manually change the DNS records, or use Route 53 automated health checks to route all the traffic to the AWS environment. Inactive for hot standby). Global Accelerator health checks addresses are static IP addresses designed for dynamic cloud computing. In a Warm standby DR scenario a scaled-down version of a fully functional environment identical to the business critical systems is always running in the cloud. less than one minute. Install and configure any non-AMI based systems, ideally in an automated way. backbone as soon as possible, resulting in lower request During recovery, a full-scale production environment, For Networking, either a ELB to distribute traffic to multiple instances and have DNS point to the load balancer or preallocated Elastic IP address with instances associated can be used, Set up Amazon EC2 instances or RDS instances to replicate or mirror data critical data. can create Route53 health checks that do not actually check health, but instead act as on/off To use the Amazon Web Services Documentation, Javascript must be enabled. as Code using familiar programming languages. Set up your AWS environment to duplicate the production environment. Aurora also supports write forwarding, which lets secondary clusters in an Aurora global to change your deployment approach. Im a bit late t0 the party, but the link to the reference PDF looks to be dead. Regions. You are designing an architecture that can recover from a disaster very quickly with minimum down time to the end users. With a multi-site active/active approach, users are able backupin addition to the instances individual EBS volumes, AWS Backup also stores and tracks the following metadata: instance such as AWS CloudFormation or the AWS Cloud Development Kit (AWS CDK). In a Pilot Light Disaster Recovery scenario option a minimal version of an environment is always running in the cloud, which basically host the critical functionalities of the application for e.g. Key steps for Backup and Restore: has automatic host replacement, so in the event of an instance failure it will be automatically replaced. Use AWS CloudFormation to deploy the application and any additional servers if necessary. global database is a good fit for write enables you to define all of the AWS resources in your workload resources must be deployed in your DR Region. create point-in-time backups in that same Region. There are several traffic management options to consider when using AWS services. production environment in another Region. Backup the EC2 instances using AMIs, and supplement with EBS snapshots for individual volume restore. AWS Backup offers restore capability, but does not currently enable scheduled or MI #~__ Q$.R$sg%f,a6GTLEQ!/B)EogEA?l kJ^- \?l{ P&d\EAt{6~/fJq2bFn6g0O"yD|TyED0Ok-\~[`|4P,w\A8vD$+)%@P4 0L ` ,\@2R 4f 2. Have application logic for failover to use the local AWS database servers for all queries. objects to an S3 bucket in the DR region continuously, while See the Testing Disaster Recovery section for more to become the primary instance. RDS Multi-AZ is a High Availability tool not a backup tool. complexity and cost of a multi-site active/active (or hot standby) automatic restoration using Amazon Simple Notification Service (Amazon SNS) and Using the AWS CLI or AWS SDK, you can script any source into AWS using block-level replication of the underlying server. Infrastructure as Code, application, and can replicate to up to five secondary Region with data planes typically have higher availability design goals than the control planes. You can backup, data replication, active/active traffic routing, and deployment and scaling of you can hardcode the endpoint of database or pass it as parameter or configure it as a variable or even retrieve it from it in the CloudFormation command. Create AMIs for the Instances to be launched, which can have all the required software, settings and folder structures etc configuration. Auto-Scaling and ELB resources to support deploying the application across Multiple Availability Zones. Consider using Auto Scaling to automatically right-size the AWS fleet. the primary Region and switches to the disaster recovery Region if the primary Region is no (DRS) continuously replicates server-hosted applications and server- hosted databases from disaster events that include insider threats or account Implementing a scheduled periodic your primary Region). deploy additional (non-core) infrastructure, and scale up, whereas warm standby only requires created from snapshots of your instance's root volume and any I guess S3 is non-POSIX based so file system cannot be backed up directly. In case of a disaster the DNS can be tuned to send all the traffic to the AWS environment and the AWS infrastructure scaled accordingly. Which of these Disaster Recovery options costs the least? replicate replica metadata changes like object access control plane. control lists (ACLs), object tags, or object locks on the For Amazon Simple Storage Service (Amazon S3), you can use other AWS Regions, or to mitigate lack of redundancy for workloads deployed to a single A pilot light approach minimizes the ongoing cost of disaster deployed. implementation (however data corruption may need to rely on allows you to more easily perform testing or implement continuous AWS provides continuous, cross-region, Even using the best practices discussed here, recovery time and recovery point will Aurora to monitor the RPO lag time of all secondary clusters to make sure that at least one secondary difference with active/active is designing how data consistency with writes to each user ID) to avoid write conflicts. Generate an EBS volume of static content from the Storage Gateway and attach it to the JBoss EC2 server. With Route 53 ARC, you testing to increase confidence in your ability to recover from a AWS CloudFormation is a powerful tool to enforce consistently SDK, or by redeploying your AWS CloudFormation template using the new desired capacity value. Information is stored, both in the database and the file systems of the various servers. Asynchronously replicate transactions from your on-premises database to a database instance in AWS across a secure VPN connection. edge servers. dial to control the percentage of traffic, multiple (. infrastructure and deploy it consistently across AWS accounts and across AWS Regions. It is a trade-off. writes to a single Region. corruption or destruction events. for e.g., if a disaster occurs at 12:00 p.m (noon) and the RPO is one hour, the system should recover all data that was in the system before 11:00 a.m. For the DR scenarios options, RTO and RPO reduces with an increase in Cost as you move from Backup & Restore option (left) to Multi-Site option (right). and AWS Regions. With the pilot light approach, you replicate Use Amazon Route 53 health checks to deploy the application automatically to Amazon S3 if production is unhealthy. other available policies, Global Accelerator automatically leverages the extensive network of AWS Multi AZ backup and failover capability available Out of the Box Amazon Virtual Private Cloud (Amazon VPC) used as a staging area. a failover event is triggered, the staged resources are used to automatically create a restore, pilot light, and warm standby also are used here for point-in-time data type, configured virtual private cloud (VPC), security group, Using AnyCast IP, you can associate multiple endpoints Install your application on a compute-optimized EC2 instance capable of supporting the applications average load synchronously replicate transactions from your on-premises database to a database instance in AWS across a secure Direct Connect connection. Amazon DynamoDB global tables use a He also asks you to implement the solution within 2 weeks. load as deployed. So please let me know. I would say option 4 would be better : Backup RDS database to S3 using Oracle RMAN Backup the EC2 instances using Amis, and supplement with EBS snapshots for individual volume restore., In my opinion, Option 4 uses an external backup tool. failover using this highly available, data plane API. When choosing your strategy, and the AWS resources to implement it, keep in mind that within approach to disaster recovery. up to production capacity. Consider automating the provisioning of AWS resources. features of Amazon Aurora global databases. EC2, increase the desired capacity setting on the Auto Scaling group. longer available. deploy enough resources to handle initial traffic, ensuring low RTO, and then rely on Auto parameters to identify the AWS account and AWS Region in which it is deployed. This If you've got a moment, please tell us how we can make the documentation better. restore and pilot light are also used in warm responsibilities in less than one minute even in the event of a 1. primary Region suffers a performance degradation or outage, you initiated failover, you can adjust which endpoint receives traffic using traffic dials, but note this is a The distinction is that pilot light cannot process requests without xwXSsN`$!l{@ $@TR)XZ( RZD|y L0V@(#q `= nnWXX0+; R1{Ol (Lx\/V'LKP0RX~@9k(8u?yBOr y In the question bellow, how will the new RDS integrated with the instances in the Cloud Formation template ? PMcb8g04RUH4Y*\vTp. As an additional disaster recovery strategy for your Amazon S3 levels) immediately. complete regional outage. periodically or is continuous. providing versioning for the stored objects so that you can %PDF-1.4 Region) is used for recovery. You can set this up as a regularly recurring job or trigger Set up DNS weighting, or similar traffic routing technology, to distribute incoming requests to both sites. Multi-Site Active/Active. AWS Backup also adds additional capabilities for EC2 Automatically initiated failover based on health checks or alarms should be used with Update files at Instance launch by having them in S3 (using userdata) to have the latest stuff always like application deployables. resilience of your AWS workloads, including whether you are likely to meet your RTO and RPO invoked. schedule, and monitor AWS backup capabilities for the following Asynchronous data replication with this strategy enables near-zero RPO. services like One minor correction, this section is referring to Snowball not VM Import/Export, AWS Import/Export when you do not need them, and provision them when you do. are only used during testing or when disaster recovery failover is Elastic Disaster Recovery uses Manually initiated failover is "FV %H"Hr ![EE1PL* rP+PPT/j5&uVhWt :G+MvY c0 L& 9cX& ! When You can run your workload simultaneously in multiple Regions as in your CloudFormation templates to deploy only the scaled-down version of your If you fail over when traffic Amazon S3 replication and recovery are still required and should be tested regularly. AWS Backup supports copying backups across Regions, such as to a databases entirely available to serve your application, and can For the active/passive scenarios discussed earlier (Pilot Light This approach extends (. /Creator (ZonBook XSL Stylesheets with Apache FOP) This approach is the most complex and costly approach to automatic restoration. (, Deploy the Oracle database and the JBoss app server on EC2. Configure ELB Application Load Balancer to automatically deploy Amazon EC2 instances for application and additional servers if the on-premises application is down. Your code is failover. Restore the static content from an AWS Storage Gateway-VTL running on Amazon EC2 (. Some DR implementations will difficult to understand. It can be used either as a backup solution (Gateway-stored volumes) or as a primary data store (Gateway-cached volumes), AWS Direct connect can be used to transfer data directly from On-Premise to Amazon consistently and at high speed, Snapshots of Amazon EBS volumes, Amazon RDS databases, and Amazon Redshift data warehouses can be stored in Amazon S3, Maintain a pilot light by configuring and running the most critical core elements of your system in AWS. It helps me a lot to pass SAA by reading it. AWS Backup to copy backups across accounts and to other AWS hot standby active/passive strategy. greater than zero and the recovery point will always be at some (. directed to each application endpoint. If you are using S3 replication to back up data to resources in AWS. the closest Region (just like reads). Create an EBS backed private AMI that includes a fresh install of your application. (configuration, code) changes simultaneously to each Region. Run the application using a minimal footprint of EC2 instances or AWS infrastructure. VM Import/Export and Import/Export were different services before. Use synchronous database master-slave replication between two availability zones. With active/passive Testing for a data disaster is also required. be served from the Region closet to them, known as An standby uses an active/passive configuration where users are only Amazon Route53 supports Or, you can use primary Region assets. Jay, Are all the section contents up-to-date? To enable infrastructure to be redeployed quickly align to meet your RPO). services also enable the definition of policies that determine disaster. AWS Certification Exam Practice Questions, most systems are down and brought up only after disaster, while AMI is a right approach to keep cost down, Upload to S3 very Slow, (EC2 running in Compute Optimizedas well as Direct Connect is expensive to start with also Direct Connect cannot be implemented in 2 weeks), While VPN can be setup quickly asynchronous replication using VPN would work, running instances in DR is expensive, Pilot Light approach with only DB running and replicate while you have preconfiguredAMI and autoscaling config, RDS automated backups with file-level backups can be used, Multi-AZ is more of an Disaster recovery solution, Glacier not an option with the 2 hours RTO, Will use RMAN only if Database hosted on EC2 and not when using RDS, Replication wont help to backtrack and would be sync always, No need to attach the Storage Gateway as an iSCSI volume can just create a EBS volume, VTL is Virtual Tape library and doesnt fit the RTO, AWS Disaster Recovery Whitepaper Certification. this operation was not available during a disaster, you would still have operable data