Engines¶
Command Center allows cloud administrators to view all storage instance specifications available for deployment on the cloud.
To view VPSA engine properties:
- Click Engines in Command Center’s left menu panel. 
- Click the tabs to view properties per engine type: 
VPSA IO engines properties¶
The IO tab displays the following properties per IO engine:
| Property | Description | 
|---|---|
| Name | IO Engine Name | 
| Internal Type | Internal type used by Nova for this engine | 
| Memory | Single virtual controller RAM requirement for this IO engine | 
| VCPU | Single virtual controller VCPUs requirement for this IO engine | 
| VPSAs / Object Storage | Count of VPSAs with this engine type, in this cloud | 
VPSA App engines properties¶
The App tab displays the following properties per App engine:
| Property | Description | 
|---|---|
| Name | APP Engine Name | 
| Internal Type | Internal type used by Nova for this engine | 
| Memory | RAM requirement for this APP engine | 
| VCPU | VCPUs requirement for this APP engine | 
| VPSAs / Object Storage | Count of VPSAs with this engine type, in this cloud | 
VPSA Composite engines properties¶
The Composite tab displays the following properties per Composite engine:
| Property | Description | 
|---|---|
| Category | Composite engine type | 
| Controller Instance Type | Link to the image used for composite controller instances. Click the sub-instance image link to display its properties: 
 | 
| Data Policy Partition Power | Swift partition power used for data policies for this composite engine type | 
| Dedicated Controller Vcs | Count of dedicated controller VCs deployed for this composite engine type | 
| Enable ZELB On Object Storage Creation | Whether Zadara Extend load balancing is enabled on VPSA creation | 
| Enforce Drive Add With VC Set | Whether disk drives are automatically added when the VPSA is expanded by an additional VC set | 
| Max Capacity In TiB | Maximum storage capacity supported by this composite engine type | 
| Max Drives Per Proxy Storage VC | Maximum disk drives that can be added to a proxy storage virtual controller | 
| Metadata Partition Size In GiB | Size in gigabytes of each Metadata partition | 
| Metadata Partitions Per Proxystorage VC | Metadata partitions allocated for each proxy storage virtual controller | 
| Metadata Policy Partition Power | Swift partition power used for metadata policies for this composite engine type | 
| Minimum VC Sets for Object Storage Creation | Minimum footprint in terms of virtual controller sets for this composite engine type | 
| Name | Composite engine instance type name | 
| Proxy Instance Type | Link to the image used for composite proxy instances Click the sub-instance image link to display its properties: 
 | 
| Proxy Storage Instance Type | Link to the image used for composite storage proxy instances Click the sub-instance image link to display its properties: 
 | 
| Setup Partition Size In GiB | Allocation size in gigabytes for the composite instance setup partition |