Article Number :
KB0012527
Published on :
2023-11-13
Last modified :
2023-11-13 15:55:12
Knowledge Base :
IT Public Self Help
How Much Do VMs cost?
VMs provisioned in the UT - Virtual Machine Gateway (UT-VMG) service have the same rates as UT - Virtual (UT-V or “classic”). See the UT-VMG Service Page and the cost estimator for more information.
When Are VMs billed?
UT-VMG is billed at the beginning of each month for the prior month’s usage.
How Are VM Charges Calculated?
Each day, charges for a VM are calculated (to several decimal places) and stored. If a VM is deleted, it incurs no charge for that day. If a VM’s specifications increase, for that day and subsequent days it will incur a correspondingly higher charge. At the beginning of each month, the prior month’s daily utilization is totaled and the IDT account number on file for the VM is charged. If an IDT account number for a VM is updated mid-month, the charges will be split between the days it was on the original account number and the days it was on the new account (unless a separate request is made to charge the whole month to the new account). If backups are enabled on the VM after it was created, the one-time license fee will be charged the following month.
The formula for daily charges is:
(MemoryGBs * MemoryGBPricePerYear + Tier1StorageGBs * T1StorageGBPricePerYear + Tier2StorageGBs * T2StorageGBPricePerYear + BackupStorageGBs * BackupStorageGBPricePerYear) / DaysInYear
For a VM with the following specs:
| VM Attribute |
Quantity |
| Memory |
4GB |
| Tier 1 Storage |
50GB |
| Tier 2 Storage |
100GB |
| Backup Storage (Sum of Tier 1 and Tier 2) |
150GB |
That example results in the following charges:
( 4GB * $67 + 50GB * $1.15 + 100GB * $0.15 + 150GB * $0.20) / 365 = $1.0151
In a month with 30 days, this VM would be billed $30.45 (rounded to the nearest cent). The yearly cost in a non-leap year would be $370.50 (extra cent due to rounding to the nearest cent each month of the year).
How Do I Update the IDT Account Number?
To learn how UT-VMG VM owners can directly update account numbers, check Updating VM Attributes. For UT-V "Classic" or if you need to back-date the change to earlier in the month, please contact the UT Service Desk and provide the new account number, the names of the VMs to update, and the date the change should take effect. The start date can be any time in the current month (even in the past) since UT-VMG billing is done monthly.
If account numbers need to be changed for a time before the current month, the service team can help calculate what should be credited and debited from each account. However, it may be quicker and easier for the department owning the accounts to transfer funds directly between the accounts in question. If requested, the service team can issue refunds to the original account and charge the new account.
