EBS
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A network drive that is attached in ONE EC2 in the same AZ - can migrate (snapshot > restore) , can be resized - only up , need to select EC2 type for max throughput
Volume Types:
| gp2 /gp3 | general purpose SSD |
| io1/io2 | high performance SSD for mission critical low latency/high throughput workloads |
| st1 (HDD) | low cost frequently accessed throughput intensive |
| sc1 (HDD) | lowest cost infrequent access |
Snapshots (Incremental)
Stored in S3 , can copy/restore cross regions , can create AMI from snapshot
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to restore - use FSR (fast snapshot restore)
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Data lifecycle manager to automate EBS snapshots & AMI’s
Encryption
To enable default encryption for new snapshots - need to enable per region
EBS Multi Attach
Up to 16 EC2’s in the same AZ - allows to create a cluster , need to use io1/io2 volume type
EC2 Instance Store - ephemeral
Physical disk that is attached to your EC2 - for very high IOPS
up to 7.5 TB per disk - up to 60 TB total , can be used as block storage