EBS Flashcards
gp2
General Purpose SSD
Suitable for Boot disks
Up to 16,000 IOPS per volume
gp3
SSD Suitable for high performance applications
What is EBS?
Elastic Block Storage. Highly available and scalable storage volumes you can attach to an EC2 Instance
io1/io2
Provisioned IOPS SSD
Suitable for OLTP and latency-sensitive apps
High Performance and most expensive
st1
Suitable for big data, data warehouses, ETL
Cannot be a boot volume
Throughput optimized HDD
sc1
Cold HDD
Less frequently accessed data
Lowest cost
Snapshots
Point-in-time photographs of volumes and are incremental in nature
You can share snapshots between regions but first…
You need to copy that snapshot to the target region
Instance store vs EBS - can you stop them
EBS yes you can without losing data
Instance store volumes no, you will loe data
AMI
Amazon Machine Image - A blueprint for an EC2 instance
EBS vs Instance store - Can you reboot without losing your data
Yes to both
What is encrypted on encrypted volumes?
Data at rest
Data in flight
All snapshots
All volumes created from the snapshot
How do you encrypt volumes?
1) Create a snapshot of the unencrypted root device volume
2) Create a copy of the snapshot and select the encrypt option
3) Create an AMI from (2)
4) Use that AMI to launch new encrypted instances
What is EC2 Hibernation
preserves the in-memory RAM on persistent storage (EBS)
What is EFS
Elastic File System - Highly scalable shared storage using NFS for Linux instances
