How usage is calculated

Usage refers to your consumption of SVM and storage Skytap resources. This article discusses how usage is calculated in your account.


Usage metrics

Skytap uses several metrics to report usage:

Metric Description
Concurrent SVMs The highest number of SVMs (Skytap Virtual Machine) that have been running at one time.
SVMs are calculated based on the amount of RAM or CPUs dedicated to running VMs. 1 SVM equals either 1 GB of RAM or 1 CPU in a VM. For example a single, running VM with 2 CPUs and 2 GB RAM consumes 2 SVMs.
  • If a VM has an unequal number of CPUs and RAM, the larger value is used to determine SVM usage. For example, a VM with 2 CPUs and 4 GB RAM uses 4 SVMs.
  • Skytap rounds up to the nearest GB per VM when calculating SVM usage based on RAM.
SVM hours 1 SVM hour equals 1 SVM running for 1 hour.
SVM usage is charged by the minute.
For example if you run a VM from 10:00 AM to 10:02 AM, it would result in two minutes of usage. If you ran the same VM again from 10:05 AM to 10:15 AM, you’d be charged for an additional 10 minutes of usage.
Storage Total storage use includes:
  • The cumulative space allocated to the virtual disks in your environments and templates. For example, if you have 20 VMs with 30 GB of virtual disk space each, your cumulative storage use is 600 GB.
  • The amount of space allocated to your shared drive(s). By default, this is 10 GB per region.
  • The cumulative amount of space consumed by the assets in your accounts.

Import and export files are not added to your storage totals.

Cumulative storage
(GB hours)
An aggregate of the amount of storage used on a hourly basis during a billing cycle.
Public IP addresses
  • Usage shown on the Settings page includes the number of attached and unattached public IP addresses in your account. The Manage Public IP Addresses page displays a list of these addresses and their current status.
  • Billing is based on the number of public IP addresses available to your account across all regions.
Networks Usage shown on the Settings page is based on the number of networks currently in use across your environments and templates. A network is “in use” if at least one VM is running on the network.
Max Concurrent VMs The highest number of virtual machines that have been running at one time.

For more information about how usage is calculated against user and department limits, see Setting usage limits.

Billing and usage reports

Your bill is based on your subscription level for the resources listed above. You may incur overage charges if your usage goes above the levels specified in your subscription.

You are billed for usage based on your monthly usage report. The billing cycle begins and ends with the calendar month, calculated using UTC.

Administrators can view the account usage report from the Usage page. For more information, see Generating usage reports.

Controlling SVM and storage usage

For best practices on controlling usage, see Managing SVM and storage usage.