EC2 Reserved Instance Opportunity
An instance running continuously pays the on-demand rate for the right to stop at any moment, a right it never uses.
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AWS
Found, explained, handed over.
Findings with a dollar figure attached, idle, oversized, orphaned, unscheduled and undiscounted spend.
Detect
ZopNight checks this automatically across AWS, with read-only access to the account.
Explain
Every finding says exactly what to change: Buy a Reserved Instance for the EC2 instance. Where the saving can be proven it is priced; where it cannot, the finding says so.
Fix
The finding opens with the fix already written out, step by step, so it is one ticket, not an investigation.
- Applies to
- EC2 Instances on AWS
- The fix, by hand
- Confirm this workload will run for the full RI term (12 or 36 months) at this instance type.
- Cost Explorer → Reservations → Recommendations. Review AWS's RI suggestions for this account.
- Compare Standard RI (higher discount, locked family) vs Convertible RI (smaller discount, can exchange) vs Compute Savings Plan (most flexible).
- Purchase via EC2 → Reserved Instances → Purchase Reserved Instances.
- Verify the RI is active in Reservations within 24h of purchase.
These are the steps the finding carries in the product.
- Category
- Commitment discounts. Reserved Instance, Savings Plan and Committed Use opportunities, where steady usage justifies a commitment.
- Where it appears
- The Savings tab of Recommendations, with every affected resource listed.
- Rule ID
RC-014- Full reference
Related checks
See the discount opportunities in your account.
Connect a read-only role and the first pass runs on your own estate. This check, and the rest of the catalogue, with it.
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- $30M+annualised cloud spend under management
- 550K+resources tracked since launch
- 20-60%off the bill in the first month
- SOC 2Type II report, plus ISO 27001
Figures published on zop.dev.