![]() See Monitoring the Status of your EBS volumes and Monitoring EBS Volumes using CloudWatch for more details on monitoring your EBS Volume’s performance.ģ) Prepare operating procedures for manual mechanisms to respond to, mitigate, and recover from any failures. ![]() For more details, see High Availability and Scaling on AWS.Ģ) Use automated monitoring, failure detection, and failover mechanisms. Depending on the degree of high availability (HA) that your application requires, we recommend these guidelines to achieve a robust degree of high availability:ġ) Design the system to have no single point of failure. At no additional charge to you, Amazon EBS volume data is replicated across multiple servers in an Availability Zone to prevent the loss of data from the failure of any single component. What are best practices for high availability on Amazon EBS?Īmazon EBS volumes are designed to be highly available, reliable, and durable. Replicating volumes across AZs protects against an AZ level failure and also provides faster recovery in case of failure. Snapshots protect against the unlikely event of a volume failure. Higher volume durability reduces the probability of losing the primary copy of your data. High volume durability, snapshots, and replicating volumes across AZs protect against different types of failures, and customers can choose to use one, two, or all of these approaches based on their data durability requirements. Q: Since io2 provides higher volume durability, should I still take snapshots and plan to replicate io2 volumes across Availability Zones (AZs) for high durability? HDD-backed volumes include Throughput Optimized HDD (st1) and Cold HDD (sc1). HDD-backed volumes are designed for throughput-intensive and big-data workloads, large I/O sizes, and sequential I/O patterns. gp3 is the latest generation of General Purpose SSD volumes that provides the right balance of price and performance for most applications that don’t require the highest IOPS performance or 99.999% durability. ![]() Both io2 and io2 Block Express of the Provisioned IOPS SSD volumes are designed to provide 100X durability of 99.999% making it ideal for business-critical applications that need higher uptime. SSD-backed volumes include Provisioned IOPS SSD (io1 and io2) and General Purpose SSD (gp3 and gp2). SSD-backed volumes are designed for transactional, IOPS-intensive database workloads, boot volumes, and workloads that require high IOPS. For more information about Amazon EBS performance guidelines, see Increasing EBS Performance.Īmazon EBS includes two major categories of storage: SSD-backed storage for transactional workloads (performance depends primarily on IOPS, latency, and durability) and HDD-backed storage for throughput workloads (performance depends primarily on throughput, measured in MB/s). For more performance information see the EBS product details page. The average latency between EC2 instances and EBS is single digit milliseconds. These volume types differ in performance characteristics and price, allowing you to tailor your storage performance and cost to the needs of your applications. Q: What kind of performance can I expect from Amazon EBS volumes?Īmazon EBS provides seven volume types: Provisioned IOPS SSD (io2 Block Express, io2, and io1), General Purpose SSD (gp3 and gp2), Throughput Optimized HDD (st1) and Cold HDD (sc1). If you are using an Amazon EBS volume as a root partition, set the Delete on termination flag to "No" if you want your Amazon EBS volume to persist outside the life of the instance. For data requiring a higher level of durability, we recommend using Amazon EBS volumes or backing up the data to Amazon S3. Therefore, we recommend that you use the local instance store only for temporary data. Unlike the data stored on a local instance store (which persists only as long as that instance is alive), data stored on an Amazon EBS volume can persist independently of the life of the instance. Q: What happens to my data when an Amazon EC2 instance terminates? ![]() Yes, please visit the EC2 FAQs page for more details. Q: Are Amazon EBS volume and snapshot ID lengths changing in 2018?
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