Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist
Cohesity

COHESITY Documentation

Explore our documentation to get started, discover products & new features, access troubleshooting guides, register sources, platforms support.

Products
Data Security Alliance
Visit Cohesity.com
Demos
Support
Blogs
Developers
Partner Portals
Cohesity Community
© 2026 Cohesity, Inc. All Rights Reserved.
Terms of Use|
Privacy Policy|
Legal|
  1. Home
  2. NetBackup™ Status Codes Reference Guide
  3. NetBackup status codes
  4. NetBackup status codes
  5. NetBackup status code: 303

NetBackup status code: 303

Message: error encountered executing Media Manager command

Explanation: This error occurs when a Media and Device Management command fails during a Vault job.

Recommended Action: For the actual error that caused the command to fail, review the Vault debug log in the following directory:

UNIX: /usr/openv/netbackup/logs/vault

Windows: install_path\NetBackup\logs\vault

Also review the summary.log in each of the sidxxx directories that had problems:

UNIX: /usr/openv/netbackup/vault/sessions/vault_name/sidxxx

Windows: install_path\NetBackup\vault\sessions\vault_name\sidxxx

(where xxx is the session ID)

Try running the command (with the same arguments as in the log file) to see the actual error. Ensure that the Media and Device Management daemons are running. Also ensure that the robot is functional and you can communicate with it (for example, inventory the robot through the GUI).

Click here to view technical notes and other information on the Cohesity Technical Support website about this status code.

Feedback

Was this page helpful?
Previous

NetBackup status code: 302

Next

NetBackup status code: 304

Feedback

Was this page helpful?