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articles/cosmos-db/reserved-capacity.md

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@@ -20,7 +20,8 @@ The size of the reserved capacity purchase should be based on the total amount o
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In this example, any provisioned throughput above 10,000 RU/s is billed with your pay-as-you-go rate. If the provisioned throughput is below 10,000 RU/s in an hour, then the extra reserved capacity for that hour is wasted.
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Please note that:
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Note that:
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* There is no limit to the number of reservations.
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* It's possible to buy more reservations at any moment.
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* It's possible to buy different reservations in the same purchase.
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As soon as you buy a reservation, the throughput charges that match the reservation attributes are no longer charged at the pay-as-you go rates. For more information on reservations, see the [Azure reservations](../cost-management-billing/reservations/save-compute-costs-reservations.md) article.
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### Autoscale provisioned throughput
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Autoscale database operations consume reserved capacity at a rate of 100 RU/s x 1.5 x N regions. For the usable net RU/s per region of a reservation, the formula is inverted. Examples:
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| Scenario | Autoscale Rate | Regions |Formula | Net RU/s per region|
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|----------|---------|----------|---------|---------|
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| 10,000 RU/s | 1.5 | 1 | (10,000 / 1.5) / 1 | 6,666.66 |
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| 10,000 RU/s | 1.5 | 2 | (10,000 / 1.5) / 2 | 3,333.33 |
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| 15,000 RU/s | 1.5 | 1 | (15,000 / 1.5) / 1 | 10,000 |
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| 30,000 RU/s | 1.5 | 2 | (30,000 / 1.5) / 2 | 10,000 |
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### Standard provisioned throughput
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Standard database operations consume reserved capacity at a rate of 100 RU/s x N regions. For the usable net RU/s per region of a reservation, the formula is inverted. Examples:
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Azure Cosmos DB consumes reservations in two different ways:
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| Scenario | Regions |Formula | Net RU/s per region|
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|----------|----------|---------|---------|
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| 10,000 RU/s | 1 | 10,000 / 1 | 10,000 |
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| 10,000 RU/s | 2 | 10,000 / 2 | 5,000 |
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| 15,000 RU/s | 1 | 15,000 / 1 | 15,000 |
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| 30,000 RU/s | 2 | 30,000 / 2 | 15,000 |
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* Autoscale database operations consume reserved capacity at a rate of 100 RU/s x 1.5 x N regions. So, if you need 10,000 RU/s for all your regions, purchase 15,000 RU/s.
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* Standard database operations consume reserved capacity at a rate of 100 RU/s x N regions. So, if you need 10,000 RU/s for all your regions, purchase 10,0000 RU/s.
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## Discounts

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