Purchased RDS reserved instances as instructed by cost explorer, daily spend increased 14 times.

Question

As per my title, AWS Cost explorer suggested to purchase 5 r6g reserved instances with no upfront to reduce our monthly costs by about $156 USD.

Was spending about $32 USD daily and this morning after purchase I woke up to a $450 USD spend on RDS Services so far. Is this a one time charge because of our RDS purchase or is this the new daily??

I raised a support ticket already to look into this but I am scared if this is the new daily, we woill go broke in a few days...

Accepted Answer

If you go to Cost Explorer, select **RDS** under **Service** and **Reserved** under **Purchase Option** as the filter, then group by **Charge Type**. You'll see the amount that shows as **Recurring reservation fee**. That's the amount you are paying for the RI. You could also change **Aggregate cost by** (under Advanced options) to **Amortized** which will spread the recurring fee evenly into days instead of showing a lump sum on the specific day when the RI was purchased.

Purchased RDS reserved instances as instructed by cost explorer, daily spend increased 14 times.

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