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Recovery Management
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Recovery the MARS Operating System
For MARS 110, 210, GC2, and their variant models, the MARS operating system (OS) is stored separate
from the MARS application and event data. It is stored on a flash disk-on-module (DOM) drive in the
appliance. With the OS and application separation, if the MARS application hangs due to a RAID failure,
you can login from a remote host and still retrieve log and trace data to assist in identifying the root cause
of the failure.
The flash drive corrupts when, for example, system libraries or executable files are missing or are the
wrong sizes as reported during a consistency checks or when the previous configuration is lost. When a
corruption occurs, you will see symptoms like a failure to boot or to deploy the previous configuration,
not able to execute certain commands, failures during the file system consistency check, or errors
reporting missing files.
If the flash becomes corrupted, you can restore the OS using a Recovery DVD. For information on
creating a Recovery DVD, see
operation restores the MARS OS without prompting for installation option information, such as the
model or role (Global Controller vs. Local Controller). The flash drive is also stores the system
configuration data (IP addresses, DNS configuration settings, host name, and license file). During an OS
recovery, the daily backup of the configuration data is copied from the hard drive to the flash drive so
you configuration can be reapplied, eliminating any appliance configuration or licensing.
Before You Begin
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To recovery the operating system for your MARS Appliance, follow these steps:
Step 1
Connect your monitor to the MARS Appliance's VGA port and your keyboard to the PS/2 keyboard port.
(To view a diagram of the MARS Appliance VGA and serial ports, refer to the appropriate model in
Hardware Descriptions—MARS 25R, 25, 55, 110R, 110, 210, GC2R, and GC2, page
Disconnect any connected network cables from the eth0 and eth1 ports.
Step 2
Put the Recovery DVD in the MARS Appliance DVD-ROM drive.
Step 3
Do one of the following:
Step 4
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Install and Setup Guide for Cisco Security MARS
6-34
To make a bootable DVD, you must burn the *.iso file onto the DVD using the bootable ISO DVD
format; just copying the file to DVD does not make it bootable. Do not copy the *.iso file to a DVD;
instead, you must extract it onto the DVD using your burner software. Most DVD burner software
has a burn image function that extracts the files and makes the DVD bootable.
Ensure that the release number of the Recovery DVD matches the operating system running on your
appliance. Issues may result if a DVD of an earlier release is used to recover a appliance running a
newer release. The DVD does not checks the versions to prevent this issue.
During the OS recovery operation, the system configuration data is copied from the hard drive to the
flash drive. The system configuration data is created as part of the daily backup operation and is
created nightly at 2:00 A.M. If your appliance has not been running long enough to back up the
system configuration, then the OS is restored but the configuration is not.
If you changed your system network settings (DNS, IP address, or hostname) after the last nightly
backup, you must manually (using the
page A-11
commands) correct the settings once the OS recovery operation completes.
Log in to the MARS Appliance as pnadmin and reboot the system using the reboot command
Power cycle the MARS Appliance
Downloading and Burning a Recovery DVD, page
ifconfig, page
Chapter 6
Administering the MARS Appliance
6-33. The recovery
A-22,
hostname, page
A-18, and the
dns,
1-4.)
OL-14672-01
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