EC2 - Placement Groups Flashcards
What is a Placement Group?
a logical grouping of instances within a single AZ.
Using placement groups…
…enables apps to participate in a low-latency, 10 Gbps network
Placement groups are recommended for…
…apps that benefit from low network latency, high network throughput, or both.
Can a placement group span multiple AZs?
No, it’s a single point of failure
The name you specify for a placement group…
…must be unique within your AWS account.
Which instances can be launched in a placement group?
Compute Optimized, GPU, Memory Optimized, Storage Optimized
T/F: AWS recommends homogeneous instances w/in placement groups.
True
Can you merge placement groups?
No
Can you move an existing instance into a placement group?
No. Create an AMI from your existing instance, and launch a new instance from the AMI into a placement group