AhsayUBS System Requirements

July 7, 2025

Backup System Requirements

The selected machine must meet the following requirements:

  • CPU that is FreeBSD 11.2 i386 / amd64 compatible.

    For the list of FreeBSD 11.2 i386 / amd64 compatible processors, please refer to Supported Processors.

  • Memory Size: 4 GB minimum. If the AhsayUBS installer detects the machine is installed with less than 2 GB RAM, the installation or upgrade process will be aborted.

  • Disk Storage Space: 1000 GB per disk minimum.

    (If your users will store backup data onto the AhsayUBS server, you should plan for the largest drives allowable by your system, as future drive upgrades will be difficult.)

  • Network interface card (NIC): at least 1 NIC that is FreeBSD 11.2 compatible.
  • Motherboard: if the motherboard supports Unified Extensible Firmware Interface (UEFI) standard. The boot mode must be set to BIOS boot manager and the AhsayUBS installed hard disk specified as the first boot device.

For production AhsayUBS servers configured with ZFS volume(s). It is strongly recommended to:

  1. Install AhsayUBS on a 64bit machine.

  2. Install sufficient RAM as ZFS volumes require relatively large amounts of memory.

    1. If an AhsayUBS server will be used for agent-based backup jobs, it is recommended to install at least 8 GB RAM.
    2. If an AhsayUBS server will be used for agentless backup jobs, it is recommended to install at least 32 GB RAM.

    The actual amount of RAM required will be dependent on the size of the ZFS volume, the number of concurrent backup jobs running, and the amount of I/O activity on the ZFS volume.

Firewall Settings

Please ensure you have updated your network firewall settings to allow network traffic through the following ports to your AhsayUBS server:

Port Description
80

HTTP port for incoming backup and restore traffic, browsing the AhsayCBS web interface.

[Port number can be customized]
443

HTTPS port for incoming backup and restore traffic, browsing the AhsayCBS web interface.

[Port number can be customized]
25 Outgoing SMTP port to the SMTP server.
8080

AhsayUBS web administration console.

[Port number can be customized]
111 Port mapper.
1058 Mount port **Required for Run Direct on AhsayCBS.
2049 Port for NFS Service.
Any incoming TCP port(s) Any incoming TCP port(s) used by previous versions of replication receiver(s), e.g. 9444, 9445 ...

AhsayUBS Processor Configuration

AhsayUBS supports up to a maximum of 256 virtual processors for both i386 / amd64 compatible CPUs.

In order to comply with the maximum supported virtual processors limit on FreeBSD, the system administrator should verify the number of virtual processors enabled on the AhsayUBS machine and apply the correct processor setup on the machine’s BIOS before proceeding with AhsayUBS installation or upgrade.

The maximum number of virtual processors calculated as:

(No. of sockets)*(No. of cores per processor)*(Hyper Threading)

Installer Media Requirements

AhsayUBS installer is available in img and ISO formats.

  1. The img format is used for deployment on a USB flash drive (minimum 2GB), for installation to a physical server.
  2. The ISO format is used for VMware installation/upgrades only; and it is not for use on deployment to CD/DVD media.

Installer Deployment

For physical server deployment, please ensure the following requirements are met before deploying Ahsay™ Universal Backup System image to a USB flash drive.

  1. The USB flash drive should meet the minimum 2GB storage size requirements.
  2. Previous data stored on the USB flash drive should be backed up properly. Once the deployment process begins, all data on the USB flash drive will be OVERWRITTEN.
  3. To avoid selecting the incorrect drive for deployment, it is advised to remove all other USB storage device such as USB portable hard disk and other USB flash drive.
When you reinstall AhsayUBS, please refer to the following link to perform user storage migration.

AhsayUBS Firmware Installation / Upgrade

Please ensure the following requirements are met before installing / upgrading AhsayUBS Firmware:

  • Connect a VGA Monitor and a keyboard to the target machine.
  • Make sure that there are local block devices (e.g. "ide", "scsi" disk volumes) installed in the machine.
  • The new installation process will destroy all the data in the local block devices installed in the machine. To protect the data in some of the local block devices, it is recommended to remove them before the installation of AhsayUBS Firmware.
  • The upgrade process requires the existing hardware/software RAID storage configuration to be healthy. The upgrade process will not be able to continue on system configuration with one or more DEGRADED RAID devices. For more information kindly refer to Rebuild Degraded Storage for instructions on how to rebuild the device.
AhsayUBS (DIY)