2023102505032828 Amazon elastic block store(EBS)

Amazon elastic block store(EBS)

Pros and cons: - ✅ Sizes up to 16 TiB - ✅  Data persistence. If you stop or terminate an Amazon EC2 instance, all the data on the attached EBS volume remains available. - Solid states by default - HDD options - ✅ incremental backups - Amazon EBS snapshots - 💡The backups are stored redundantly in multiple Availability Zones using Amazon S3. - ✅ if you change files you can reupload only changed block. - ✅ HA: automatically replicated in its AZ - ✅ Data encryption - ✅ Flexibility. On-the-fly changes. Modify volume type, volume size, and IOPS capacity without stopping your instance. - ⛔ Availability Zone level resource. Stores data in a single Availability Zone. - ⛔ Volumes do not automatically scale - ⛔ Need to be in the same availability zone to attach to EC2 instances - ⛔ doesn't work with Lambda - ⛔ Most EBS volumes can only be attached to a single EC2 instance at a time.

When use it

• Operating systems
• Databases
• Entrprise applications
• Big data analytics engine

EBS volume types

• SSD: for transactional workloads with frequent read/write operations with small I/O size
• HDD:  are used for large streaming workloads that need high throughput performance

References

1. https://explore.skillbuilder.aws/learn/course/134/play/85854/aws-cloud-practitioner-essentials Module 5
2. https://explore.skillbuilder.aws/learn/course/external/view/elearning/1851/aws-technical-essentials?da=sec&sec=prep Module 4
3. AWS user guide: Amazon Elastic Block Store (Amazon EBS)
4. AWS FAQs: Amazon EBS