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Hard Disk Space Management

As events occur across Domains & Servers, the event logs get filled with data, that are processed for meaningful information (reports / forensics) and later archived (save disk space & historical reporting); the disk space required to store the ever growing event log data is unique & depends on the number of domain controllers, file servers, workstations...

Don't for one second think we advice you to refrain from adding DCs & Servers..... However, with increased resources come, increased need for disk space and we will do our best to suggest the most optimum RAM, minimum disk space and event log settings and in turn ensuring the apt auditing environment.





Processor 2.4 GHz 3 GHz
Core 4 8
RAM 8 GB 16 GB
Disk space 50 GB 100 GB


  • Use a machine with 16 cores and 32 GB RAM for best performance.
  • Deploy an agent for auditing large environments that are geographically distributed and operate across wide area network (WAN) connections, or involve 1000+ workstations. For information on how to deploy an agent, click here.
  • DB disk space is dependent on the number of events ingested by ADAudit Plus and the archive settings configured in ADAudit Plus. To calculate the required disk space, run the product for a month, then use the disk utilization graph, by navigating to Admin > Disk space analysis, in the product.

Operating systems

ManageEngine ADAudit Plus can be installed and run on the following Microsoft Windows operating system versions:

  • Windows Server 2022
  • Windows Server 2019
  • Windows Server 2016
  • Windows Server 2012 R2
  • Windows Server 2012
  • Windows Server 2008 R2
  • Windows Server 2008
  • Windows 11
  • Windows 10
  • Windows 8.1
  • Windows 8
  • Windows 7 (EOLed by Microsoft)
  • Windows Vista (EOLed by Microsoft)

Web browsers

ManageEngine ADAudit Plus requires one of the following browsers to be installed in the system.

  • Mozilla Firefox 3.6 and above
  • Google Chrome
  • Microsoft Edge

Recommended screen resolution: 1024 x 768 pixels or higher.


PostgreSQL is the default database of ADAP and comes bundled with it. MS SQL can also be used as the product database. Mentioned below are the versions supported:

  • SQL Server 2022
  • SQL Server 2019
  • SQL Server 2017
  • SQL Server 2016
  • SQL Server 2014
  • SQL Server 2012 (EOLed by Microsoft)
  • SQL Server 2008 R2 (EOLed by Microsoft)

Note: For steps to migrate from PgSQL to MS SQL database, click here.

Auditing platforms

ManageEngine ADAudit Plus supports the following platforms:

  • Windows Active Directory 2008 and above
  • AWS managed Active Directory
  • Azure Active Directory/Microsoft Entra ID
  • Active Directory Federation Service 2.0 and above
  • Active Directory Certification Service
  • Windows Server 2008 and above
  • Windows workstations XP and above
  • MacOS Catalina 10.15 and above
  • Windows File Server 2008 and above
  • Windows Failover Cluster with SAN
  • NetApp Filer Data ONTAP 7.2 and above
  • NetApp Cluster Data ONTAP 8.2.1 and above
  • EMC Storage Systems: Celerra, VNX, VNXe, Unity, and Isilon
  • Synology DSM 5.0 and above
  • Hitachi NAS 13.2 and above
  • Huawei OceanStor V5 series, OceanStor 9000 V5 storage, and OceanStor Dorado All-Flash Storage, and OceanStor Hybrid Flash Storage (V6 series)
  • Amazon FSx for Windows
  • QNAP
  • Azure files

Disk Space Requirement

The hard disk requirements computation for Active Directory Auditing & File Server Auditing are detailed in the tables below. The numbers reached are with a simple calculation based on the number of users, number of days and the approx size of an event log.

Active Directory Auditing

Number of Users

Number of Days

Total Size

1 1 15 KB
10000 90 15 * 10000 * 90 = 13500000 KB (13 GB)

For example, let us imagine the below scenario:

No of Domain Controllers : 5

No of users : 10000

No of Days : 90

Average log size : 15 KB

Disc Space : Average Log Size * No of Users * No of Days

    : 15 kb * 10000 * 90 = 13500000 (12.8 GB)

Archive : (Average Log Size * No of Users * No of Days) / 10

    : (12.8 GB) / 10

As the 'Archived' logs will be zipped, the folder size will reduce by 90%, making the zipping ratio as 10:1.

Total Disc Space = Archive (1.28 GB) + 12.8 GB (Approx for 15 kb * 10000 Users * 90)

File Server Auditing

Number of Users

Number of Files

Number of Days

Total Size

1 1 1 4 KB
100 1 1 400 KB
100 100 1 40000 KB (40 MB)
100 100 90 40000 * 90 = 3.5 GB
100 100 720 (2 yrs) 40000 * 720 = 29 GB

Disc Space : Average Log Size * No of Users * No of Files * No of Days

Archive : (Average Log Size * No of Users * No of Files * No of Days) / 10

As the 'Archived' logs will be zipped, the folder size will reduce by 90%, making the zipping ratio as 10:1.

Total Disc Space = Archive + Disk Space

Tips to keep disk space on check

Disk Space Alerts

An administrator can configure a threshold value for free disc space. When the free space on the Server goes below the threshold, an alert will be sent to the configured email address.

i. Check size of ev_temp & temp folder & ensure it is empty or having very few files.

ii. Check logs folder size is not more than 1 GB.

If the above two scenarios are not as mentioned above, seek technical assistance:

Email : ADAudit Plus Support | DID : +1-408-916-9891 | Toll Free : +1-888-720-9500

Data Archiving

Data archiving in ADAudit Plus allows organizations to archive processed audit data to an archive folder by compressing the files to a zip format at the intervals mentioned, ensuring forensic and compliance requirements. The 'days' (in the image below) refers to the number of days the event log data is stored in the Active Database, which will later be archived based on the 'Archive Events' under Admin tab.

Data Archiving Options

For Technical Assistance: Email : ADAudit Plus Support | DID : +1-408-916-9891 | Toll Free : +1-888-720-9500

Windows AD & Servers Auditing Advantage using ADAudit Plus


Events Monitoring


Archive Data

Track every Active Directory & Servers modifications by Admin, Users, Helpdesk, HR etc. Archive AD event data for Security and Forensics.

Dashboard View


32 bit | 64 bit

Single view of all critical audit data for configured domains. Support for both 32 bit and 64 bit Windows platforms.

Reports & Alerts


Export Reports & Meet Compliance

View pre-configured reports and set email alerting for changes to monitored folders / files. Meet PCI, SOX, GLBA, FISMA, HIPAA Compliance with audit reports in XLS, CSV, PDF and HTML formats.

IT Auditors


Important Features

Logins for IT Auditors with reports view only. Here, only the important features are listed, for the many, many more features experience an Online Demo of ADAudit Plus.

ADAudit Plus Trusted By