53 lines
2.4 KiB
Markdown
53 lines
2.4 KiB
Markdown
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# Cloud Units Advanced
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## How is the price of Cloud Units (v4) calculated?
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The following tables display how cloud units (v4) are calculated on the ThreeFold Grid. The 4th version of cloud units are used since Grid 2.2+ in mid 2020.
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> Note: [Resource units](resource_units.md) are used to calculate SU & CU. Resource Units are used to measure compute and storage capacity produced by hardware.
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### Compute Capacity
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| CU (Compute Unit) | | | | |
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| ------------------------------------- | --- | --- | ---- | --------------- |
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| GB Memory | 4 | 8 | 2 | |
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| nr vCPU | 2 | 1 | 4 | |
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| Passmark Minimum (expected is double) | 500 | 250 | 1000 | CPU performance |
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The passmark (CPU benchmark or alternative) is not measured on the grid yet. It is used in simulators to check the mechanisms and ensure enough performance per CU is delivered.
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Example of Compute unit:
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- 4 GB memory & 2 virtual CPU (and 50GB of SSD disk space)
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- Recommended price on TF Grid = 10 USD
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- Alternative cloud price = between 40 USD and 180 USD
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See how we compare with the market compute prices [here](pricing).
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### Storage Capacity
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| SU (Storage Unit) | HDD | SSD |
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| ------------------- | ---- | --- |
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| GB Storage Capacity | 1200 | 200 |
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HDD is only usable for Zero Database driven storage (e.g. ThreeFold Quantum Safe Storage). 1.2 TB of HDD is provided following the advised storage policy of 16+4 with 20% overhead. So the net usable storage would be 1TB. In other words, the SU corresponds in that case to 1TB of net usable storage and an extra 200GB for redundancy.
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Example of Storage unit:
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- 1TB of usable storage as provided by the Zero-DBs (the backend storage systems)
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- Recommended price on TF Grid for 1 SU = 10 USD
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- Alternative cloud price = between 20 USD and 200 USD
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See how we compare with market storage prices [here](pricing).
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### Network
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| NU (Network Unit = per GB) = NRU per month | GB (NRU) |
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| ------------------------------------------ | -------- |
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| GB transferred OUT or IN | 1 |
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> We use SU-month and CU-month to show SU monthly costs. This can be compared to kilowatts (kW) to see electricity usage per month. Learn more about how this is calculated with [Resource units](resource_units), a way to measure the compute and storage capacity produced by hardware.
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