---
title: "Data Persistence"
slug: "data-persistence"
status: "new"
updated: 2023-03-17T11:51:02Z
published: 2023-03-17T11:51:02Z
canonical: "docs.zpesystems.com/data-persistence"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zpesystems.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Persistence

In normal operation, when data logging is enabled (Configuration settings), this data is stored in non-volatile memory:

- user data from keystrokes
- managed devices output
- device monitoring data passing through a Nodegrid device

### Nodegrid Device Memory

Nodegrid devices contain the following separate memory devices:

**BIOS**

Memory Size: 64MB Memory Type: NOR Flash Volatility: Nonvolatile User Data: No

**Flash Disk**

Memory Size: 32 GB or 64 GB. Other custom sizes may be used. Memory Type: SSD Volatility: Nonvolatile User Data: Yes. Partition/Data: sda2 - unit configuration sda5 - backup configuration sda8 - user home directories and log files

**RAM**

Memory Size: 4 GB or 8 GB Memory Type: DDR3 Volatility: Volatile User Data: Yes