# Modernizing Hardware Lifecycle Management with Hexnode

In an enterprise managing number of endpoints, hardware failure is a statistical certainty, but user downtime shouldn’t be. This document defines the **Predictive Maintenance Playbook** for the Hexnode ecosystem. By transitioning from a reactive “Break-Fix” model to a data-driven “Predictive Replacement” strategy, we eliminate the productivity costs of sudden device failure. Leveraging **Custom Health Telemetry and Automated ITSM Workflows**, we identify degraded assets, swollen batteries, failing SSDs, and initiate replacement orders days before the hardware actually fails.

Logical Architecture & Entity Relationships
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### 1. The Sensor Layer (Deep Telemetry)

- **Component:** Hexnode UEM Agent + Custom Scripting.
- **Challenge:** Standard MDM only sees basic battery %.
- **Solution:**
    - [Windows:](https://www.hexnode.com/mobile-device-management/help/executing-custom-scripts-for-windows/) PowerShell script runs daily to query WMI for Battery FullChargeCapacity and NVMe S.M.A.R.T. Status.
    - [macOS:](https://www.hexnode.com/mobile-device-management/help/how-to-run-scripts-on-mac-using-hexnode-mdm/) Bash script queries system_profiler SPPowerDataType for Cycle Count.
- **Output:** Data is written to [Custom Attributes](https://www.hexnode.com/mobile-device-management/help/add-custom-attributes/) on the device record.

### 2. The Analysis Hub (Threshold Logic)

- **Engine:** **Hexnode Compliance Engine.**
- **Logic:** Continuously evaluates the **Custom Attributes** against the defined policy.
- **Rule Example:** If ‘Battery_Health_Percentage’ < 75 OR If 'SSD_Wear_Level' > 90.
- **Action:** Marks the device as Non-Compliant.

### 3. The Integration Bridge (Procurement)

- **Trigger:** Device marked Non-Compliant due to Hardware Health.
- **Mechanism:** **Hexnode Native** [ServiceNow Integration.](https://www.hexnode.com/mobile-device-management/help/servicenow-integration/)
- **Action:** Automatically generates an Incident Ticket populated with the device Serial Number and the specific Health Metric (e.g., “Battery Cycles: 1100”).
- **Workflow:** ServiceNow routes this ticket to the “Procurement Queue” as a “Standard Change” request.

### 4. The User Interface (Experience)

- **Mechanism:** [Broadcast Message](https://www.hexnode.com/mobile-device-management/help/broadcast-messages-to-a-device-enrolled-in-hexnode-mdm/).
- **Action:** IT manually or automatically triggers a message to the device: “*Your laptop is scheduled for a refresh. Please expect a new device within 48 hours.*”

The “Golden Threshold” Logic
----------------------------

*Predictive indicators monitored via Custom Scripts.*

**Trigger A: Battery Health (PowerShell/Bash)**

- **Metric:** **Design Capacity vs. Full Charge Capacity.**
- **Threshold:** < 75% Health.
- **Cycle Count:** > 1,000 Cycles (Li-ion EOL).
- **Script Output:** Writes value to Custom Attribute: Battery_Health_Status.

**Trigger B: Storage Integrity (Windows WMI)**

- **Metric:** **Reallocated Sector Count** or **Percentage Used** (NVMe).
- **Threshold:** Any increase in “Uncorrectable Errors.”
- **Script Output:** Writes value to Custom Attribute: Disk_Health_Status.

Execution Logic: The 4-Phase Response Playbook
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**Phase 1: Data Collection (SENSE)**

The Hexnode Agent executes the **“Health Check Script”** (e.g., every 24 hours).

- **Action:** Script fetches low-level hardware data.
- **Transport:** The Agent pushes these new values to the **Hexnode Cloud** during the next sync interval.

**Phase 2: Policy Evaluation (THINK)**

The **Compliance Engine** processes the new Custom Attribute values.

- **Logic:** Checks if Battery_Health_Status falls below the configured threshold.
- **VIP Context:** A separate Policy Group for “Executives” can have stricter thresholds (e.g., replace at 85% instead of 75%).

**Phase 3: Procurement Trigger (ACT)**

The **ServiceNow Integration** acts on the “Non-Compliant” status.

- **Ticket Creation:** A ticket is generated: 
    - **Subject:** “Predictive Hardware Failure – Asset [Serial]”
    - **Category:** Hardware / Replacement
    - **Priority:** Low (Proactive) / High (If VIP)
- **Automation:** ServiceNow workflows can auto-approve the order if within budget caps.

**Phase 4: User Notification (NOTIFY)**

- **Trigger:** Hexnode Administrator (or API) sends a **Broadcast Message.**
- **Content:** Corporate-branded popup informing the user of the proactive swap.

Scale Impact & ROI Analysis
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**Metric****Legacy Break-Fix****Hexnode Proactive Playbook****Downtime**4 – 8 Hours (Post-failure)< 30 Minutes (Data Migration Only)**Ticket Type**“Emergency” (High Cost)“Standard Change” (Low Cost)**Data Source**User Reporting (“It’s slow”)Data-Driven (Custom Attributes)**Hardware ROI**Replaced at FailureMaximized Lifecycle (Replaced at EOL)**User Experience**Frustration“White Glove” ServiceImplementation Checklist (Action Plan)
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- **Scripting:** Write and test PowerShell/Bash scripts to fetch **Battery Cycles** and **Smart Status.**
- **Configuration:** Create **Custom Attributes** in Hexnode (e.g., batt_health, ssd_status) to store script outputs.
- **Scheduling:** Configure Hexnode to execute these scripts on a **Daily Schedule**.
- **Integration:** Connect **ServiceNow** and map the “Non-Compliant” status to a specific Ticket Category.
- **Policy:** Define the Compliance Rules for batt_health < 75.