A diagnostic account, named "diag", is provided with your storage system. You can use the diag account to perform troubleshooting tasks in the systemshell. The diag account and the systemshell are intended only for low-level diagnostic purposes and should be used only with guidance from technical support.
The diag account is the only account that can be used to access the systemshell, through the advanced command systemshell. The diag account is disabled by default. You must enable the account and set up its password before using it for the first time. Neither the diag account nor the systemshell is intended for general administrative purposes.