Questions tagged with Reserved Instances
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I was getting two very different sets of numbers in Cost Explorer between the Cost Explorer details linked from the EC2 Reserved Instances Recommendations, and doing my own filtering based on known instance types in tags in another window (costs and hours in my window were about double).
The filter that made them match up turned out to be Tenancy, where the RI page was specifically specifying Shared Tenancy, but I had no filter on, which was including both Shared and No Tenancy.
What does No Tenancy mean? I can find info on Dedicated, Shared and Default, but not "No Tenancy".
Note, there are no dedicated hosts being used.
asked 3 years ago
- How could I find out when an RDS instance would go out of support?
- What happens if an RI is purchased for an instance which is about to retire? Does that mean the Db needs to be replaced when the instance is retired ?
asked 3 years ago
A customer is interested in RDS RIs, but confused with our description of what is fixed for RIs.
According to [this page][1]
On one hand "Region, DB Engine, DB Instance Class, Deployment Type and term length must be chosen at purchase, and cannot be changed later.".
As I understand, deployment type is Single or Multi-AZ, so it can't be changed after the purchase.
But on the other hand, "The RI discounted rate will also apply to usage to both Single-AZ and Multi-AZ configurations for the same database engine and instance family. For example, let’s say you purchased a db.r3.large PostgreSQL Single-AZ RI in EU (Frankfurt). The discounted rate of this RI can automatically apply to 50% of the usage of a db.r3.large PostgreSQL Multi-AZ instance in the same region."
Does it mean that I can change deployment type (Single -> Multi) for the reserved instance, but in this case the only 50% of price will be covered by RI purchase?
[1]: https://aws.amazon.com/rds/reserved-instances/
asked 3 years ago
Please confirm, If I do a 1 year RI for an account, If I stop the service in between of the month, same RI benefit can be given to another Account .
For e.g
I have 2 account under ABCD Root account.
Account 1
Account 2
If I reserve one VM for year under Account 1, and If I delete the VM in middle of the year, can I pass on RI benefit to any other VM under Account 2.
A customer wants to move away from Zonal RI's and go to Compute Savings Plans; However, they would still like the ability to reserve capacity as they did with Zonal RI's.
What's the recommended best practice here?
asked 3 years ago
1. Customers can purchase dedicated reserved capacity for EC2 which means the instance is guaranteed to be available, but I do not think you can do that for RDS. Can you please confirm? DB engine is SQL Server.
2. Does buying a RDS reserved instance help with instance availability as customers with RIs get priority over on demand.
asked 3 years ago
"If you can predict your need for Amazon DynamoDB read-and-write throughput, reserved capacity offers significant savings over the normal price of DynamoDB provisioned throughput capacity. You pay a one-time upfront fee and commit to paying for a minimum usage level at specific hourly rates for the duration of the reserved capacity term. Any throughput you provision in excess of your reserved capacity is billed at standard rates for provisioned throughput."
Is it possible to reserve capacity for DynamoDB **without** upfront commitment, like we can do in RI's with no upfront payment? Taking into account the text above it is not possible, but would like to confirm it.
asked 3 years ago
When a customer has consolidated billing, if a reserved instance is not used in the account where it was purchased, it will be used in the best suitable linked account that maps with the same characteristics.
Is there a way to trace that account/instance-id where it was used. It is challenging to know who is taking the unused reserved instances for internal budgeting.
Hi,
Is it possible to use scheduled reserved instances for Dedicated Hosts?
I do not see this listed as an option, however I wanted to double check before informing my customer:
https://aws.amazon.com/ec2/dedicated-hosts/pricing/