Another administrator modifies the UCM cluster security password by using the CLI.
Which of the following is most likely to be affected by this change?
A.
encryption of DRS backups that were made prior to the change
B.
encrypted communication between DRS Master Agents and Local Agents
C.
the addition of new backup devices to a DRS schedule
D.
the deletion of old backup devices from a DRS schedule
E.
access to network storage location configuration
Explanation:
ExplanationExplanation/Reference:Of the available choices, encryption of Cisco Unified Communications Manager (UCM) Disaster Recovery
System (DRS) backups that were made prior to the password change will most likely be affected if another
administrator modifies the cluster security password by using the command-line interface (CLI). DRS, which is
a cluster-level backup system for UCM, uses the existing cluster security password when performing encryption
on a backup. If the cluster security password is modified by using the CLI or by a fresh UCM installation, you
might not be able to decrypt and restore that backup. Workarounds to this issue include remembering the old
cluster security password that was used to encrypt the data or immediately performing a fresh backup when the
cluster security password changes.
Encrypted communications between DRS Master Agents and Local Agents are not likely to be affected by this
change. Master Agents store component registrations, maintain scheduled tasks, and store backup data on a
locally attached device. Local Agents, which are installed and activated by default on each cluster node, are
responsible for running backup and restore scripts on the local server. DRS uses Secure Sockets Layer (SSL)
to both authenticate and encrypt data between a Master Agent and a Local Agent. In addition, DRS uses IP
Security (IPSec) for public key infrastructure (PKI) encryption.
The addition or deletion of backup devices to a DRS schedule will not be affected by the password change.
However, it is important to note that a backup device cannot be deleted from DRS if that backup device is part
of an existing backup schedule. In order to remove an existing backup device from a DRS configuration, you
must first ensure that the device has been removed from any backup schedules in which it might be configured.
Access to network storage location configuration will not be affected by the password change. In order to
configure network storage locations, you must have access to a Secure File Transfer Protocol (SFTP) server.
In addition to backing up data to devices that are directly connected to a Master Agent, DRS can back up to
network storage locations by using SFTP.Cisco: Disaster Recovery System Administration Guide for Release 8.5(1): What is the Disaster Recovery
System?