{"id":3131,"date":"2019-09-02T09:57:46","date_gmt":"2019-09-02T09:57:46","guid":{"rendered":"https:\/\/www.testpreptraining.com\/tutorial\/?page_id=3131"},"modified":"2020-05-02T04:55:14","modified_gmt":"2020-05-02T04:55:14","slug":"disaster-recovery","status":"publish","type":"page","link":"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-solutions-architect-professional-sap-c01\/disaster-recovery\/","title":{"rendered":"Disaster Recovery"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li>It is about preparing for and recovering from a disaster.<\/li><li>Any event that has a negative impact on a company\u2019s business continuity or finances is a disaster.<\/li><li>Also includes\n<ul>\n<li>hardware or software failure<\/li>\n<\/ul>\n<ul>\n<li>a network outage<\/li>\n<\/ul>\n<ul>\n<li>a power outage<\/li>\n<\/ul>\n<ul>\n<li>physical damage to a building like fire or flooding<\/li>\n<\/ul>\n<ul>\n<li>human error<\/li>\n<\/ul>\n<ul>\n<li>or some other significant event.<\/li>\n<\/ul>\n<\/li><li>Traditionally companies duplicate or increase capacities for DR<\/li><li>Critical metric for backup, are\n<ul>\n<li>RPO &#8211; maximum period of data loss, acceptable in failure or incident.<\/li>\n<\/ul>\n<ul>\n<li>RTO &#8211; maximum amount of downtime, permitted to recover from backup and resume processing.<\/li>\n<\/ul>\n<\/li><\/ul>\n\n\n\n<p><strong>AWS Services for DR (Disaster Recovery)<\/strong><\/p>\n\n\n\n<p><strong>Regions<\/strong><\/p>\n\n\n\n<p>AWS are in multiple regions around the globe, choose most appropriate location for data and DR<\/p>\n\n\n\n<p><strong>Storage<\/strong><\/p>\n\n\n\n<p>Amazon S3<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Objects are redundantly stored on multiple devices across multiple facilities within a region<\/li><li>designed to provide a durability of 99.999999999% (11 9s).<\/li><li>protection for data retention and archiving through versioning in Amazon S3,<\/li><li>AWS multi-factor authentication (AWS MFA)<\/li><li>bucket policies<\/li><li>Identity and Access Management (IAM).<\/li><\/ul>\n\n\n\n<p>Amazon Glacier<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>extremely low-cost storage for data archiving and backup.<\/li><li>Objects (or archives, as they are known in Amazon Glacier) are optimized for infrequent access,<\/li><li>retrieval times of several hours.<\/li><li>Glacier has same durability as Amazon S3.<\/li><\/ul>\n\n\n\n<p>Amazon EBS<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Can create point-in-time snapshots of data volumes.<\/li><li>use snapshots as starting point for new EBS volumes<\/li><li>long-term durability as snapshots are stored within S3.<\/li><li>After a volume is created, attach it to a running EC2 instance.<\/li><li>Amazon EBS volumes persists independently from life of instance and is replicated across multiple servers in AZ<\/li><\/ul>\n\n\n\n<p>AWS Storage Gateway<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>service to connect an on-premises software appliance with cloud-based storage<\/li><li>provides seamless and highly secure integration between on-premises and AWS<\/li><\/ul>\n\n\n\n<p><strong>Compute<\/strong><\/p>\n\n\n\n<p>Amazon EC2<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>provides resizable compute capacity in the cloud.<\/li><li>Within minutes, create EC2 instances or virtual machines with complete control.<\/li><li>For DR, rapidly create virtual machines to control is critical.<\/li><\/ul>\n\n\n\n<p>AMIs<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>are preconfigured with operating systems<\/li><li>might also include application stacks.<\/li><li>can also configure own AMIs.<\/li><li>For DR, configure and identify own AMIs to launch during recovery procedure.<\/li><\/ul>\n\n\n\n<p>Availability Zones<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>are distinct locations insulated from failures in other AZ<\/li><li>provide inexpensive, low-latency network connectivity to other AZ in same region.<\/li><li>With instances in separate AZ protect applications from failure of a single location.<\/li><li>Regions consist of one or more Availability Zones.<\/li><\/ul>\n\n\n\n<p><strong>Networking<\/strong><\/p>\n\n\n\n<p>Amazon Route 53<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>a highly available and scalable DNS web service.<\/li><li>a reliable, cost-effective way to route users to Internet applications.<\/li><li>Route 53 has global load-balancing capabilities<\/li><li>ability to failover between multiple endpoints and even static websites hosted in Amazon S3.<\/li><\/ul>\n\n\n\n<p>Elastic IP addresses<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>static IP addresses designed for dynamic cloud computing<\/li><li>Elastic IP addresses can mask instance or AZ failures by<\/li><li>Can pre-allocate some IP addresses for most critical systems hence, IP addresses are known before disaster strikes.<\/li><li>simplifying execution of the DR plan.<\/li><\/ul>\n\n\n\n<p>Elastic Load Balancing<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>automatically distributes incoming application traffic across multiple Amazon EC2 instances.<\/li><li>Provides fault tolerance in applications<\/li><li>Provide load-balancing capacity as per incoming application traffic.<\/li><li>can pre-allocate load balancer<\/li><\/ul>\n\n\n\n<p>Amazon VPC<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>provision a private, isolated section of the AWS cloud<\/li><li>can launch AWS resources in a virtual network that you define.<\/li><li>Gives complete control over virtual networking environment &nbsp;including\n<ul>\n<li>selection of own IP address range<\/li>\n<\/ul>\n<ul>\n<li>creation of subnets<\/li>\n<\/ul>\n<ul>\n<li>configuration of route tables and network gateways.<\/li>\n<\/ul>\n<\/li><\/ul>\n\n\n\n<p>Amazon Direct Connect<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>set up a dedicated network connection from premises to AWS.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Databases<\/strong><\/h3>\n\n\n\n<p><strong>Amazon RDS<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>easily to set up, operate, and scale a relational database<\/li><li>gives ability to snapshot data from one region to another<\/li><li>Can have a read replica running in another region.<\/li><\/ul>\n\n\n\n<p><strong>Amazon DynamoDB <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>a fast, fully managed NoSQL database service<\/li><li>has reliable throughput and single-digit, millisecond latency.<\/li><li>Can copy data to DynamoDB in another region or to Amazon S3.<\/li><li>In DR recovery scale up seamlessly with a single click or API call.<\/li><\/ul>\n\n\n\n<p><strong>Amazon Redshift <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>is a fast, fully managed, petabyte-scale data warehouse service<\/li><li>Use it in DR preparation phase to snapshot data warehouse to S3<\/li><li>In DR recovery quickly restore data warehouse into the same region or within another AWS region.<\/li><li>install and run choice of database software<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Backup and restore<\/strong><\/h3>\n\n\n\n<p>Key steps for backup and restore<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Select an appropriate tool or method to back up data into AWS.<\/li><li>Ensure that you have an appropriate retention policy for this data.<\/li><li>Ensure that appropriate security measures are in place for this data, including encryption and access policies.<\/li><li>Regularly test the recovery of this data and restoration of system.<\/li><li>Data backup options to S3 from on-site infrastructure, or from AWS &#8211;<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"489\" height=\"299\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-21.png\" alt=\"\" class=\"wp-image-3350\"\/><\/figure><\/div>\n\n\n\n<p>Restoring a system from S3 backups to AWS EC2 \u2013<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"322\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-22.png\" alt=\"\" class=\"wp-image-3351\"\/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>It is about preparing for and recovering from a disaster. Any event that has a negative impact on a company\u2019s business continuity or finances is a disaster. Also includes hardware or software failure a network outage a power outage physical damage to a building like fire or flooding human error or some other significant event&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2471,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[7,544],"class_list":["post-3131","page","type-page","status-publish","hentry","category-amazon-aws","tag-aws","tag-disaster-recovery"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Disaster Recovery - Testprep Training Tutorials<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-solutions-architect-professional-sap-c01\/disaster-recovery\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Disaster Recovery - Testprep Training Tutorials\" \/>\n<meta property=\"og:description\" content=\"It is about preparing for and recovering from a disaster. 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