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You install failover recording servers like standard recording servers (see Install a failover recording server
through Download Manager on page 161). Once you have installed failover recording servers, they are visible
in the Management Client. Milestone recommends that you install all failover recording servers on separate
computers. Make sure that you configure failover recording servers with the correct IP address/host name of
the management server. The user permissions for the user account under which the Failover Server service
runs are provided during the installation process. They are:
l
Start/Stop permissions to start or stop the failover recording server
l
Read and Write access permissions to read or write the RecorderConfig.xml file
If a certificate is selected for encryption, then the administrator must grant read access permission to the
failover user on the selected certificate private key.
If the failover recording server takes over from a recording server that uses encryption,
Milestone recommends that you also prepare the failover recording server for using
encryption. For more information, see Secure communication (explained) on page 138
and Install a failover recording server through Download Manager on page 161.
You can specify what type of failover support you want on device-level. For each device on a recording server,
select full, live only or no failover support. This helps you prioritize your failover resources and, for example,
only set up failover for video and not for audio, or only have failover on essential cameras, not on less
important ones.
While your system is in failover mode, you cannot replace or move hardware, update the
recording server, or change device configurations such as storage settings or video
stream settings.
Cold standby failover recording servers
In a cold standby failover recording server setup, you group multiple failover recording servers in a failover
group. The entire failover group is dedicated to take over from any of several preselected recording servers, if
one of these becomes unavailable. You can create as many groups as you want (see Group failover recording
servers for cold standby on page 201).
Grouping has a clear benefit: when you later specify which failover recording servers should take over from a
recording server, you select a group of failover recording servers. If the selected group contains more than
one failover recording server, this offers you the security of having more than one failover recording server
ready to take over if a recording server becomes unavailable. You can specify a secondary failover server group
that takes over from the primary group if all the recording servers in the primary group are busy. A failover
recording server can only be a member of one group at a time.
Administrator manual | XProtect® VMS 2023 R1
407 | User interface details
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