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See Create custom billing usage queries with SQL
5.0.2
Increase decimal type for local storage charge in abiquo-billing.
5.1
The following new usage options were added in Abiquo 5.1
...
vm_usage
vm_on_usage
vm_off_usage
Increase decimal type for local storage charge in abiquo-billing.
5.2.1
The following new usage options were added in Abiquo 5.2.1
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