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

# USM Appliance Deployment Requirements

|                         |                    |                                                     |
| ----------------------- | ------------------ | --------------------------------------------------- |
| **Applies to Product:** | **USM Appliance™** | <span className="text-gray">LevelBlue OSSIM®</span> |

USM Appliance has the following general deployment requirements.

## Minimum Hardware Requirements for Virtual Machines

All LevelBlue USM Appliance hardware meets the requirement listed in the table below. To achieve sufficient performance, you need to use similar or better hardware to host every LevelBlue USM Appliance virtual machine. Hosting USM Appliance virtual machines on inadequate system resources may affect their ability to perform necessary tasks, and also may affect the stated throughput. In addition, if you satisfy the hardware specification but try to run multiple USM Appliance virtual machines on it, the performance degrades.

<Danger>
  **Warning:** In USM Appliance version 5.4, LevelBlue updated its Network IDS to include the [Hyperscan library](https://01.org/hyperscan), which requires the CPU to support [SSSE3](https://en.wikipedia.org/wiki/SSSE3) (Supplemental Streaming SIMD Extensions 3) instruction set. To check if your CPU contains SSSE3, see [our knowledge base article](https://success.alienvault.com/s/article/Upgrade-to-USM-Appliance-Version-5-4-Fails-Due-to-CPU-Lacking-SSSE3-Support).
</Danger>

**USM Appliance Minimum Required Hardware Specifications**

| **Name**                             | **Value**                |
| ------------------------------------ | ------------------------ |
| CPU Type                             | Intel® Xeon E5620        |
| RAM Type                             | DDR3 1333 MHz            |
| Disk Type                            | SAS 10000 RPM (204 MB/s) |
| Memory Performance (MEMCPY)          | 3310.32 MiB/s            |
| Disk Performance (random read/write) | 15.97 MB/s (120 Mb/s)    |

## Minimum Virtual Machine Requirements

The following table lists the minimum system requirements for deploying USM Appliance virtual machines. For a more complete list, see the [USM Appliance data sheet](https://cdn-cybersecurity.att.com/docs/data-sheets/usm-appliance.pdf) on the LevelBlue website.

<Warning>
  **Important:** The virtual machines must operate in Hardware Virtualization Mode (HVM). Paravirtualization is not supported at this time as the device requires SCSI device Bus (SDx) connectors.
</Warning>

**USM Appliance Minimum Virtual Machine Requirements**

<table>
  <thead>
    <tr>
      <th />

      <th className="text-center" colSpan={2}>USM Appliance All-in-One</th>
      <th className="text-center" colSpan={2}>Remote Sensor</th>
      <th className="text-center" colSpan={3}>USM Appliance Standard</th>
    </tr>

    <tr>
      <th />

      <th>1TB</th>
      <th>500GB</th>
      <th>1TB</th>
      <th>250GB</th>
      <th>Server</th>
      <th>Logger</th>
      <th>Sensor</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>Total Cores<Tooltip tip="Total Cores are available physical cores without hyperthreading enabled."><sup>1</sup></Tooltip></td>
      <td className="text-center" colSpan={2}>8</td>
      <td className="text-center" colSpan={2}>4</td>
      <td className="text-center" colSpan={3}>8</td>
    </tr>

    <tr>
      <td>RAM (GB)<Tooltip tip="To guarantee stable operation, you should increase the RAM if the swap space on the hard disk exceeds 1 GB for an extended amount of time. Otherwise, data collection and normalization, OTX integration, or vulnerability scanning might fail."><sup>2</sup></Tooltip></td>
      <td className="text-center" colSpan={2}>16</td>
      <td className="text-center" colSpan={2}>8</td>
      <td className="text-center" colSpan={3}>24</td>
    </tr>

    <tr>
      <td>Storage (TB)</td>
      <td>1.0</td>
      <td>0.5</td>
      <td>1.0</td>
      <td>0.25</td>
      <td>1.2</td>
      <td>1.8</td>
      <td>1.2</td>
    </tr>

    <tr>
      <td>Virtualization Environment</td>

      <td className="text-center" colSpan={7}>
        VMware virtual hardware version 10+ (ESXi 5.5 and later)<Tooltip tip="To deploy USM Appliance version 5.7 or later, you must be running ESXi 5.5 or later. Previous versions of USM Appliance can be deployed on ESXi 4.0 or later."><sup>3</sup></Tooltip>

        <br />

        Hyper-V 3.0+ (Windows Server 2008 SP2 and later)
      </td>
    </tr>
  </tbody>
</table>

## Supported Browsers

LevelBlue supports the following browsers. All USM Appliance releases are tested on the most recent version of the browsers and one version prior to the most recent.

**Supported Browsers**

| Browser/Platform     | Windows | Mac OS X | Linux |
| -------------------- | ------- | -------- | ----- |
| Chrome               | Yes     | Yes      | Yes   |
| Edge                 | Yes     | N/A      | N/A   |
| Firefox              | Yes     | Yes      | Yes   |
| Internet Explorer 11 | Yes     | N/A      | N/A   |
| Safari               | N/A     | Yes      | N/A   |