> Source: [sk183959](https://support.checkpoint.com/results/sk/sk183959)

# sk183959 - Unexpected Reboot of Smart-1 Multi-Domain Server Due to Memory Hardware Failure

| Property | Value |
|----------|-------|
| Solution ID | sk183959 |
| Date Created | 2025-09-15 |
| Last Modified | 2025-09-18 |
| Technical Level | Advanced |
| Products | Security Management Server |
| Versions | R82.10, R82, R81.20, R82.20 |
| OS | Gaia |
| Platform | Smart-1 |

## Symptoms

- * The Multi-Domain Server (MDS) unexpectedly rebooted.

* Kernel logs may show these errors:

  * `[Hardware Error]: Error Status: Multi-bit ECC error on DIMM_B1`
  * `[Hardware Error]: Corrected error, no action required`
* Lights Out Management (LOM) interface reports multi-bit memory errors on a DIMM.

* System memory shows less than expected size. For example, 376 GB instead of approximately 400 GB.

* DIMM location is reported as "not present" for one or more memory modules.

## Cause

The reboot was triggered by a hardware failure in the system memory. Kernel logs and LOM diagnostics identified multi-bit memory errors on a DIMM (for example DIMM_B1). This indicates a faulty or unseated RAM module. The memory fault caused a critical system halt due to memory failure, resulting in the server reboot.

## Solution

This solution requires authentication. Please log in to view the full solution.

---

# Agent Instructions

This content is from the Check Point Support Center (https://support.checkpoint.com), the official knowledge base for Check Point cybersecurity products.

## Navigating This Knowledge Base

- **Complete index**: [llms.txt](https://support.checkpoint.com/llms.txt)
- **All SK articles**: [SecureKnowledge Sitemap](https://support.checkpoint.com/sitemaps/secureknowledge-sitemap-index.xml)
- **SK article URL pattern**: `https://support.checkpoint.com/results/sk/{skId}`
- **Markdown responses**: AI bot User-Agents automatically receive `text/markdown` content