Data Domain: Password reset

Summary: This article serves to assist on issues encountered with failed DDOS login or access.

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Symptoms

  • Unable to authenticate to log in to the Data Domain (DD).
  • An Account is locked due to failed login attempts or because password has expired.
  • A user or system account details have been lost or forgotten.
  • The UI displays an error that the username and password are incorrect but will not report that the account is locked. Connect with SSH to see if the password is expired or the account is locked.

Applies to:

  • All Data Domain systems
  • All DDOS software versions

Cause

  • New install and default password does not work
  • Known correct password not accepted
  • Password is lost or forgotten
  • Password has expired
  • Multiple failed access attempts causing a lockout

Resolution

1.) New install and default password does not work:
  • The default password, at the time of install, is the system serial number
  • The password IS case sensitive.
  • Check that the correct keyboard mapping and password are used
2.) Incorrect Password for Valid Account
  • The DD unit tolerates a maximum 3x failed login attempts for any valid user account
  • After 3x failed login attempts, the user account will be locked for 2 minutes
  • Every additional attempt adds and extends the lock with another 2 minutes
  • Wait-out the timeout, confirm correct keyboard mapping and password
3.) Lost or Forgotten user account password:
  • Any other user accounts should be reset using the 'sysadmin' account by using the following commands from DD-CLI:
# user show list
# user change password <username>

4.) Expired Password:

  • Log in using SSH, using the original (expired) password
    • You are prompted to enter a new password.
Note: If the login issues are intermittent, check if there are scripts running that are attempting to log in to the Data Domain system as well.
 
5.) Lost/Forgotten sysadmin or Security Officer Account Password:
  • Use the Password Recovery Procedure; available in DDOS versions >=7.10.1.40 | 7.13.x | 8.3.x… (or newer)
    • The feature must have been configured BEFORE the password was lost or forgotten, using the command: 
      • # user recovery-email set <email id>

To check if a recovery account is configured: 
# user recovery-email show
Password recovery email address for sysadmin is: someone@somewhere.com
  • For legacy DDOS versions:
    Raise a Service Request with your support provider.
    Remote and possibly physical access may be required (field service may be chargeable).

Produse afectate

Data Domain

Produse

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Article Number: 000024207
Article Type: Solution
Ultima modificare: 14 Jan 2026
Version:  9
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