6. Cloud units and billing

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Capacity units used for billing :

  • CU or a compute unit
  • SU or a storage unit
  • TU or a transaction unit
  • NU or a network unit

Compute Unit (CU)

Type: Allocation

Definition: 1 VM with 4GB of memory and 2 virtual CPU's.
CU's are calculated per VM, per Cloudspace, per Account and per G8 towards the upper value of the memory / virtual CPU combination.

Some examples:

Resource typeMemoryvCPUsCUs
VM4 GB11
VM3 GB21
VM4 GB21
VM5 GB21.25
VM4 GB31.5
CS with 3 VMs3 x 5 GB84

Storage Unit (SU)

Type: Allocation
Definition: 1 TB of allocated vdisk capacity
Example: Calculate number of SUs for a VM with 1 boot disk and 1 datadisk

bootdisk sizedatadisk sizeSU
12 GB512 GB(12+512)/1024 = 0.52 SU

Transaction Unit (TU)

Type: Allocation
Definition: 400 allocated IOPS
Example: Calculate SU for a VM with 1 boot disk and 1 datadisk

bootdisk limitdatadisk sizeTU
2000 IOPS10000 IOPS(2000+12000)/400 = 35 TU

Network Unit (NU)

Type: Consumption
Definition: 1 TB consumed traffic from & towards the virtual firewall or external IP address on a VM

Data retention policy

The billing records are kept per Account for the last 3 months.

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