The VMware Tanzu Application Service for VMs runtime is available in two forms, both available to download from the VMware Tanzu Application Service for VMs page on VMware Tanzu Network:
- TAS for VMs
- Small Footprint TAS for VMs
For more information about the difference, see the following sections.
When should you use Small Footprint TAS for VMs?
Use Small Footprint TAS for VMs for smaller foundations on which you intend to host 2500 or fewer application instances, as described in Limitations. If you want to use Small Footprint TAS for VMs in a production environment, ensure the limitations described are not an issue in your use case.
Small Footprint TAS for VMs is compatible with VMware Tanzu Operations Manager (Tanzu Operations Manager) service tiles.
Small Footprint TAS for VMs is also ideal for the following use cases:
-
Proof-of-concept installations: Deploy Tanzu Operations Manager quickly and with a small footprint for evaluation or testing purposes.
-
Sandbox installations: Use Small Footprint TAS for VMs as an Tanzu Operations Manager operator sandbox for tasks such as testing compatibility.
-
Service tile R&D: Test a service tile against Small Footprint TAS for VMs instead of a standard TAS for VMs deployment to increase efficiency and reduce cost.
Small Footprint TAS for VMs Limitations
Small Footprint TAS for VMs has the following limitations:
-
Number of application instances: The tile is not designed to support large numbers of app instances. You cannot scale the number of Compute VMs beyond 10 instances in the Resource Config pane. Small Footprint TAS for VMs is designed to support 2500 or fewer apps.
-
Management plane availability during tile upgrades: You might not be able to perform management plane operations like deploying new applications and accessing APIs for brief periods during tile upgrades. The management plane is located on the Control VM.
-
Application availability during tile upgrades: If you require availability during tile upgrades, you must scale your Compute VMs to a highly available configuration. Ensure sufficient capacity exists to move app instances between Compute VM instances during the upgrade.
TAS for VMs requirements
For information about resource requirements for TAS for VMs and Small Footprint TAS for VMs, see TAS for VMs resource requirements.
