How can I update euroNAS?

Go to "System Management - System - OS Update" ….

Select Search if your system is connected to Internet

Select Start the update to update the server

If you are unable to access Internet from your server, select option I already have an update file and upload the file.

How do I join an Active Directory Domain?

For easier user management, euroNAS can become a member of an Active Directory Domain.

To join the domain please do following

Security Management - Domain / Workgroup

Select Active Directory Domain

Enter here either the IP Address of your Domain Server or the Active Directory Domain and Organizational Unit

User must have administrative rights for this domain or OU.

Guest Account means that if user “guest” is allowed to access the share even unknown users can then access the share. If no user “guest” is defined under access permission for the share it will not have any effect.

After the server has joined domain succesfully you will need to reboot the server.

After reboot you will see your domain users and groups and be able to assign them access permissions under Access Control - Share access for domain users and groups

How can I create a software raid?

In this article you can see how the software raid can be created with euroNAS. Under
you can see which version supports which software raid options.

To create a software raid under euroNAS please go to Software Raid - Create Raid

Select drives …

Enter the name for the future shared drive on this raid array and select what kind of raid array you wish to create.

Snapshot reservation reserves space for use with snapshots. This value can later be ajusted under Snapshots - Manage Reserved Space

After the raid array is created it can be used immediately (even during rebuild). To check the status of the raid array go to Software Raid - Raid Status

Under Services - Email Notification you can configure euroNAS to send you notification emails in case something happens to the raid array.

How can I copy the data from other (non euroNAS) server to euroNAS?

euroNAS Premium series has the integrated “Client Backup” functionality. With this option euroNAS can log on a different file server as a client and pool the data to one of its shares.

This task can also be scheduled. You can access it via Replication/ Backup - Client Backup.

Enter here the IP Address of the source server and name of the share on this server. User is the user that is permitted to access remote share on the source server.

Target share is the shares where you wish to copy the data to. Optionally you can define a folder in which data should be copied. If the folder does not exist it will be created automatically. If no folder is defined data will be copied into the root of the share.

Jobs also can be time scheduled … to do this go to Client Backup - Create scheduled backup.

After job is created you can see its properties and current status under Client Backup

Connecting euroNAS iSCSI Target on Citrix Xen Server

euroNAS Products are providing High-End iSCSI Target that is easy to configure and maintain. This article describes how to connect euroNAS on to a Citrix Xen Server using iSCSI protocol.

Firts create new iSCSI Target via Data Management - iSCSI Targets - Create iSCSI Target

Now you can add this target in Citix XenCenter using the option New Storage – type iSCSI.

Assign it a new name for the storage and enter under Target Host the IP address of the euroNAS Server. Select then the option Discover IQNs, select your iSCSI target and click on Discover LUNs.

After clicking on finish – on a freshly created iSCSI Target you will get the Warning that the disk will be formatted.

After confirmation new iSCSI Target will be formatted and ready for use with Xen Server.

Connect NFS share on to Citrix Xen Server

euroNAS is perfect choice for use as storage with Citrix Xen Server – it not only provides iSCSI functionality but also has a very fast performing NFS Server that is ideal for use with Citrix Xen.

This article explains how to connect Xen Server to euroNAS using NFS protocol.

Create first in euroNAS administration Data Management - Shares - Create new share and select the option Allow NFS access.

Under Security Management - Access Control - NFS access enter the IP address of your XEN Server.

Make sure under System - Services that NFS Service has started and go to Citrix XenCenter to add this NFS share.

Select the option New Storage and as a type NFS VHD.

Enter now the IP address of the server and the name of the share and click on scan


Path to the NFS share must always contain prefix volumes or nfs – share must be mounted either with /volumes/sharename or /nfs/sharename (2012 version and higher)

After clicking on finish NFS share will be initialized and prepaired for use with XEN Server.

How should I configure server synchronization (replication)?

euroNAS Server Synchronization, a built-in feature of euroNAS NAS Software, offers an advanced tool, with which data can be transferred locally or over long distances reliably and quickly, and if needed it can be easily restored without flooding the network with too much traffic.

Configuration is pretty simple and straight forward. Jobs can be set to run on a scheduled time or single jobs can be created.

First you need to define the shares you wish to replicate

To do this go to Synchronization - Replication Shares

Then go to Synchronization - Settings

And enter IP addresses of the servers that you wish to replicate.

IMPORTANT: Since the IP Addresses are used for security who can access the share all IP Addresses of the other servers needs to be entered – even if you don’t wish to use all addresses for replication. If not all are defined it is possible that connection gets refused.

Define also the share on which the synchronization logs will be saved.

Also you have a possibility to define additional options

  • Bandwidth – with this option set the replication will only use bandwidth defined
  • Data Compression – data will be compressed before it gets send to other server. This option makes sense if data is copied via VPN with lower bandwidth
  • Copy permission (ACL) – in this case ACLs of the files and folders will also be replicated
  • Instant copy will make replication faster – in this case file differences will not be first copied on to the target share and then pasted to the file but immediately pasted. This saves space on the target server and also speeds up the replication
  • Resolve UID/GID – with this option euroNAS will try to resolve User / Group IDs into names when transferred
  • Delete files that are not existing on source – If selected replication software will always check if the files on the target server exist on the source server. If they don’t exist they will be automatically deleted.

If this option is not selected it is possible that over time the target share gets full.

To configure scheduled synchronization go to Synchronization – Start sync / create schedule and select Schedule

You can now decide if data should be replicated daily or hourly (for example every 1 or 4 hours).

Assign a name to the replication job and decide at which time and weekdays the job should be started.

If you wish to run hourly sync jobs you only need to enter the name of the job and severity.

Select source server and target server (if you wish to copy locally from one share to another you can select your local server).

You can now define source and target share for the synchronization.

Option Sync via snapshot should be selected if data copied is in use (for example virtual images) – in this case before sync job is issued snapshot of the data will be created and copied (instead of live data) – in this case data consistency will be much better than with standard copy.

Now everything is configured and you can see the jobs and their current status in the main menu.

Increasing the disk timeout values under Linux

euroNAS HA Cluster provides you the highest level of redundancy. It even protects you if one of the replication servers fail. In this case all ressources will be moved to another running server automatically.

During failover the ressources are unavailable during the failover period. In most cases OS can handle this but sometimes it is nessesary to change default timeout settings.

When connecting to Linux using iSCSI timings depend on 2 factors:

  • Timeout of the disk and
  • of the open-iscsi initiator.

You can see the current time out values of your iSCSI disk with following command:
find /sys/class/scsi_generic/*/device/timeout -exec grep -H . '{}' \;

Value can be changed by editing timeout settings in /sys – for example:
echo 180 > /sys/block/sdd/device/timeout

This setting is not remaining after reboot so putting it into a start script is recommended.

How do I install euroNAS?

Installation is easy and simple – after you have created an Installation-CD or Installation-USB-Stick (for creation follow separate instructions from our knowledge database) you can boot from it and start the installation

Select the option Begin Installation

Select the installation language (it can be changed later in administration inteface)

Select the installation drive (at least 4 GB Size – perferably SSD drive)

Installation will begin (it takes usually 5-10 Minutes)

After installation is done – reboot the server and make sure that your installation-CD is not inserte.

After reboot you will be shown this window. In here you can change the IP Address(Network Settings) or immediately access the server via web browser of your choice (IE, Firefox, Chrome etc.) by entering the IP Address that is shown – in this example that is: or

When you open the administration interface in your browser you can enter the user name and password. Default user name and password is :

username: admin
password: euronas

When you enter the administration interface you can start configuring your server

How do I initialize the drive?

Drive initialisation will prepair the drive for use with euroNAS. If you want to use drives in combination with Software Raid this step is not nessesary.

If you wish to use single disks or hardware raid – this is a nessesary step:

1. Go to Storage Management - Drive Management and select option Initialize drive

Select the drive that you wish to initialize:

You can now provide a new name for this drive and specify how much space should be reserved for snapshots (you can later change this value later under “Snapshot Manager” – “Manage reserved space”). If you don’t wish to use snapshots or snapshot replication you can set it to 0 .


Name of the drive helps you late differentiate different disks. It is very useful especially in cases you have several disks all having same model name. This is not the name for your shares or iscsi targets.

Now you can create shares and iSCSI Targets on this drive

For creating shares go to Data Management - Shares - Create new share
For creating iSCSI Targets go to Data Management - iSCSI Targets - Create iSCSI Target
For creating iSCSI Targets go to Data Management - Fibre Channel Target