EC2 Storage Flashcards
1
Q
What is an EBS volume?
A
- A network drive attached to an EC2 instance that persists data
- Locked to an AZ
- Has a provisioned capacity
- Can be detached and attached to another instance
2
Q
What is EBS Snapshot?
A
- Used to make a backup of EBS volume at a point in time
- Can copy snapshots across AZ or region
- Right click on volume - create Snapshot
- Stored in S3
3
Q
What is AMI?
A
- Amazon Machine Image - SAAS
- Customization of an EC2 instance
- Region specific, though can be copied (*)
- Available from Public AMI, your own AMI, AWS Marketplace AMI - Buy and sell
4
Q
What is EC2 Instance Store?
A
- High performance disk
- Attached to single EC2 instance, not shared
- Much faster than volume
- Ephemeral: data lost when stopped
- Used for cache, temp, scratch
- If need to save data, your responsibility
5
Q
What is Elastic File System?
A
- Manage Network File System that can be mounted to 100’s of EC2 instances
- Works ONLY with Linux
- Multi AZ
- Highly available, scalable, expensive
- No need for capacity planning
6
Q
What is EC2 Image Builder?
A
- Used to automate the create of Virtual Machines or container images. Create/Maintain/Validate/Test/Distribute
- Used for EC2 AMI’s
- Can copy the AMI to different regions