--- title: Utilization Collection with On-Prem Collectors description: utilization-collection-with-on-prem-collectors --- [Skip to content](https://support.block64.com/utilization-collection-with-on-prem-collectors#main-content) [Customer Portal](https://customerportal.block64.com/tickets-view?hsLang=en) [![Logo - dark](https://support.block64.com/hs-fs/hubfs/Logo%20-%20dark.png?width=350&height=86&name=Logo%20-%20dark.png)](https://support.block64.com/?hsLang=en) - [Home](https://support.block64.com/) - [Insights Portal](https://insights.block64.com/login) - Platform Show submenu for Platform - [Block 64](https://www.block64.com/) - [Why Block 64?](https://www.block64.com/#:~:text=What%20makes%2CBlock%2064%20different) - Solutions Show submenu for Solutions - [Unified Visibility](https://www.block64.com/solutions/unified-visibility) - [Cost Optimization](https://www.block64.com/solutions/cost-optimization) - [Proactive Security](https://www.block64.com/solutions/proactive-security) - [Compliance](https://www.block64.com/solutions/continuous-compliance) - Learn Show submenu for Learn - [Quick Start Guides](https://support.block64.com/getting-started) - [Integrations](https://support.block64.com/documentation#integrations) - [Blog](https://www.block64.com/blog) - Support Show submenu for Support - [Trust Center](https://trust.block64.com/) - [Service Health](https://status.block64.com/) - [Partners](https://www.block64.com/partners) - [Contact Us](https://www.block64.com/contact) - [Pricing](https://www.block64.com/pricing) - [Get Started Free](https://www.block64.com/free-trial) Open main navigation Close main navigation - [Home](https://support.block64.com/) - [Insights Portal](https://insights.block64.com/login) - Platform Show submenu for Platform - [Block 64](https://www.block64.com/) - [Why Block 64?](https://www.block64.com/#:~:text=What%20makes%2CBlock%2064%20different) - Solutions Show submenu for Solutions - [Unified Visibility](https://www.block64.com/solutions/unified-visibility) - [Cost Optimization](https://www.block64.com/solutions/cost-optimization) - [Proactive Security](https://www.block64.com/solutions/proactive-security) - [Compliance](https://www.block64.com/solutions/continuous-compliance) - Learn Show submenu for Learn - [Quick Start Guides](https://support.block64.com/getting-started) - [Integrations](https://support.block64.com/documentation#integrations) - [Blog](https://www.block64.com/blog) - Support Show submenu for Support - [Trust Center](https://trust.block64.com/) - [Service Health](https://status.block64.com/) - [Partners](https://www.block64.com/partners) - [Contact Us](https://www.block64.com/contact) - [Pricing](https://www.block64.com/pricing) - [Get Started Free](https://www.block64.com/free-trial) - - [Customer Portal](https://customerportal.block64.com/tickets-view) - [Submit a Support Request](https://support.block64.com/kb-tickets/new) [Submit a Support Request](https://support.block64.com/kb-tickets/new?hsLang=en) How can we assist you today? - There are no suggestions because the search field is empty. 1. [Block 64 Support Center](https://support.block64.com/?hsLang=en) 2. [Documentation](https://support.block64.com/documentation?hsLang=en) 3. [Discovery: General Knowledge](https://support.block64.com/documentation?hsLang=en#discovery-general-knowledge) # Utilization Collection with On-Prem Collectors ### Overview Block 64’s on-prem collectors do more than inventory, where the platform supports it, they also sample **resource utilization**: CPU and memory usage over time, and disk activity for supported sources. This is the data behind the sizing figures in the [Cloud Sizing Compute report](https://support.block64.com/utilization-collection-with-on-prem-collectors#Xa39a3ee5e6b4b0d3255bfef95601890afd80709), such as **95th CPU %** and **95th RAM %**, and it is what allows a right-sizing recommendation for physical and virtual machines alike. Three collection tools gather this data: | **Tool** | **Runs as** | **Typical use** | | --- | --- | --- | | **Discovery Appliance** (BlockBox) | Hardened virtual appliance, agentless scanning | Whole datacenters / subnets without installing anything | | **Discovery Application** | Application installed on a Windows server | Environments where a dedicated appliance isn’t practical | | **Discovery Agent** (remote devices) | Lightweight agent on endpoints | Machines outside scan reach, remote workers, branch offices | If you already run any of these for inventory, utilization collection is part of the same deployment, there is nothing extra to install. ### Discovery Appliance (BlockBox) The appliance collects utilization agentlessly over your network. For Windows devices it uses WMI to poll **CPU, RAM usage, and disk IOPS**; support for other platforms varies, with IBM AIX reporting limited metrics. The BlockBox Technical Pre-Work article lists the ports and credentials this requires, WMI/RPC/SMB access with appropriate permissions is what powers the performance counters. - Setup: [Discovery Appliance Setup](https://support.block64.com/blockbox-virtual-appliance-deployment-guide?hsLang=en) - Pre-work: [BlockBox Virtual Appliance: Technical Pre-Work & Prerequisites](https://support.block64.com/blockbox-virtual-appliance-technical-pre-work?hsLang=en) ### Discovery Application The Discovery Application collects utilization from the devices it scans, reporting the same CPU and memory percentiles to Insights. It is installed on a Windows server inside the environment and is a good fit where deploying an appliance is not practical.   - Setup: [Discovery Application Installation](https://support.block64.com/block-64-discovery-application-user-guide?hsLang=en) ### Discovery Agent (Remote Devices) Discovery Agents run directly on endpoints and report utilization from machines that appliance, or application-based scanning can’t reach, remote and home offices, for example. In Insights, devices collected this way show **Agent** as their collector type. - Setup: [Discovery Agent Deployment](https://support.block64.com/block-64-discovery-agent#DeployingDisc) ### Seeing the results Open **Reports \> Cloud Sizing \> Compute** in Insights. Devices with collected utilization show **95th CPU %** and **95th RAM %** figures, and the **Collector** column shows which tool gathered the data. Utilization figures appear once a collector has delivered enough samples, newly discovered devices show a dash (**-**) until a picture builds up, and a dash never means zero usage. If *all* devices collected by a tool show dashes, confirm that tool is connected and reporting: the report shows a banner when it detects devices whose utilization has never been captured. ### Data Handling Utilization samples are aggregated into percentile figures by the platform; the methodology behind weekly and monthly roll-ups is described in [Time Series Data Roll-ups](https://support.block64.com/time-series-data-roll-ups?hsLang=en). Collectors gather performance counters only, no file contents, emails, or application data are inspected.  ### Related Articles - [Utilization Data Collection](https://support.block64.com/utilization-data-collection?hsLang=en) - [Discovery Appliance Setup](https://support.block64.com/blockbox-virtual-appliance-deployment-guide?hsLang=en) - [Discovery Application Installation](https://support.block64.com/block-64-discovery-application-user-guide?hsLang=en) - [Discovery Agent Deployment](https://support.block64.com/block-64-discovery-agent#DeployingDisc) - [Time Series Data Roll-ups](https://support.block64.com/time-series-data-roll-ups?hsLang=en) - [Getting Started](https://support.block64.com/getting-started?hsLang=en#main-content) - [Free Trial Onboarding](https://support.block64.com/getting-started?hsLang=en#free-trial-onboarding) - [Start Your Subscription](https://support.block64.com/getting-started?hsLang=en#start-your-subscription) - [Discovery Application Installation](https://support.block64.com/getting-started?hsLang=en#discovery-application-installation) - [Discovery Appliance Setup](https://support.block64.com/getting-started?hsLang=en#discovery-appliance-setup) - [Discovery Agent Deployment](https://support.block64.com/getting-started?hsLang=en#discovery-agent-deployment) - [Insights Reports](https://support.block64.com/insights-reports?hsLang=en#main-content) - [IT Asset Management](https://support.block64.com/insights-reports?hsLang=en#it-asset-management) - [Security](https://support.block64.com/insights-reports?hsLang=en#security) - [Cloud & Infrastructure](https://support.block64.com/insights-reports?hsLang=en#cloud-infrastructure) - [The Combine: User Guide](https://support.block64.com/insights-reports?hsLang=en#the-combine-user-guide) - [Troubleshooting](https://support.block64.com/troubleshooting?hsLang=en#main-content) - [Discovery: General Knowledge](https://support.block64.com/troubleshooting?hsLang=en#discovery-general-knowledge) - [Discovery: Block 64 Application](https://support.block64.com/troubleshooting?hsLang=en#discovery-block-64-application) - [Discovery: BlockBox Appliance](https://support.block64.com/troubleshooting?hsLang=en#discovery-blockbox-appliance) - [Discovery: Discovery Agent](https://support.block64.com/troubleshooting?hsLang=en#discovery-discovery-agent) - [Insights Calculations](https://support.block64.com/troubleshooting?hsLang=en#insights-calculations) - [Documentation](https://support.block64.com/documentation?hsLang=en#main-content) - [Discovery: General Knowledge](https://support.block64.com/documentation?hsLang=en#discovery-general-knowledge) - [Privacy and Security](https://support.block64.com/documentation?hsLang=en#privacy-and-security) - [Block 64 API](https://support.block64.com/documentation?hsLang=en#block-64-api) - [Integrations](https://support.block64.com/documentation?hsLang=en#integrations) - [FAQs](https://support.block64.com/faqs?hsLang=en#main-content) - [Security](https://support.block64.com/faqs?hsLang=en#security) - [Block 64 Discovery](https://support.block64.com/faqs?hsLang=en#block-64-discovery) - [New Features & Updates](https://support.block64.com/new-features-updates?hsLang=en#main-content) - [New Features & Updates](https://support.block64.com/new-features-updates?hsLang=en#new-features-updates) - [Combine](https://support.block64.com/new-features-updates?hsLang=en#combine) - [Block 64 Discovery](https://support.block64.com/new-features-updates?hsLang=en#block-64-discovery) - [Remote Discovery Agent](https://support.block64.com/new-features-updates?hsLang=en#remote-discovery-agent) - [Combine API](https://support.block64.com/new-features-updates?hsLang=en#combine-api) - [BlockBox Virtual Appliance](https://support.block64.com/new-features-updates?hsLang=en#blockbox-virtual-appliance) [![Logomark - dark](https://support.block64.com/hs-fs/hubfs/Logomark%20-%20dark.png?width=60&height=96&name=Logomark%20-%20dark.png "Logomark - dark")](http://block64.com) 300 Geary Ave, Toronto, ON M6H 2C5, Canada +1 800-875-5260 [www.block64.com](https://www.block64.com/)