Main Points are,
Reserved instances are one of the types of purchase options available for EC2 instance to enable you to optimize your costs based on your needs.
Tenancy defines how EC2 instances are distributed across physical hardware and obviously it affects pricing. The main thing here, with a tenancy selected(say dedicated), you can also decide your purchase options(either spot or on-demand or reserved)
So answering your question based on the above statements,
Can that affect the performance of my application deployed on that instance? What happens when the application has more load/requests? No it doesn't, It is totally based on the instance type that you've selected. When application has more load, try to add more instance or change the type of instance.
Are Reserved Instances also working with shared tenancy? Yes, explained above.
Reserved Instancies service is creates instances or it's possible to buy, ie 10 RI T2 type to apply to my current instances? It's just a pricing option.
you can read these two docs for getting a better understanding.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-purchasing-options.html
https://aws.amazon.com/ec2/pricing/dedicated-instances/
Answer from Sam on Stack OverflowI thought I understood Reserved Instances but clearly not - halp!
amazon web services - How does AWS know to apply reserved instances price to the EC2 running 24/7 and not part time? - Stack Overflow
Is it not possible to buy t4g reserved instances for RDS?
AWS OpenSearch Service - Buy/Sell Reserved Instances
Videos
Main Points are,
Reserved instances are one of the types of purchase options available for EC2 instance to enable you to optimize your costs based on your needs.
Tenancy defines how EC2 instances are distributed across physical hardware and obviously it affects pricing. The main thing here, with a tenancy selected(say dedicated), you can also decide your purchase options(either spot or on-demand or reserved)
So answering your question based on the above statements,
Can that affect the performance of my application deployed on that instance? What happens when the application has more load/requests? No it doesn't, It is totally based on the instance type that you've selected. When application has more load, try to add more instance or change the type of instance.
Are Reserved Instances also working with shared tenancy? Yes, explained above.
Reserved Instancies service is creates instances or it's possible to buy, ie 10 RI T2 type to apply to my current instances? It's just a pricing option.
you can read these two docs for getting a better understanding.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-purchasing-options.html
https://aws.amazon.com/ec2/pricing/dedicated-instances/
Can that affect the performance of my application deployed on that instance? What happens when the application has more load/requests?
No it can't. There is no effect.
Are Reserved Instances also working with shared tenancy?
It does not apply to you. RI is only pricing discount, not related to the fact whether you use shared tenancy, dedicated instances.
Reserved Instancies service is creates instances or it's possible to buy, ie 10 RI T2 type to apply to my current instances?
It does not create new instances. Its just a pricing discount.
Hi all, bit of an AWS noob. I have my Foundational Cloud Practitioner exam coming up on Friday and while I'm consistently passing mocks I'm trying to cover all my bases.
While I feel pretty clear on savings plans (committing to a minimum $/hr spend over the life of the contract, regardless of whether resources are used or not), I'm struggling with what exactly reserved instances are.
Initially, I thought they were capacity reservations (I reserve this much compute power over the course of the contracts life and barring an outage it's always available to me, but I also pay for it regardless of whether I use it. In exchange for the predictability I get a discount).
But, it seems like that's not it, as that's only available if you specify an AZ, which you don't have to. So say I don't specify an AZ - what exactly am I reserving, and how "reserved" is it really?