> # Automatically Saving the Running Configuration

> Cisco MDS NX-OS provides an option to automatically save any configuration changes to the startup configuration. This ensures that the new configuration is present after a switch reboot. By default, the Active=Saved option is automatically enabled on any FICON VSAN.

> Table 25-2 displays the results of the Active = Saved option and the implicit copy from the running configuration to the startup configuration (copy running start) in various scenarios.

> When the Active=Saved option is enabled in any FICON-enabled VSAN in the fabric, then the following apply (see Number 1 and 2 in Table 25-2):

> - All configuration changes (FICON-specific or not) are automatically saved to persistent storage (implicit copy running start) and stored in the startup configuration.
> - FICON-specific configuration changes are immediately saved to the IPL file (see the "FICON Configuration Files" topic).

> If the Active=Saved option is not enabled in any FICON-enabled VSAN in the fabric, then FICON-specific configuration changes are not saved in the IPL file and an implicit copy running startup command is not issued, you must explicitly save the running configuration to the startup configuration (see number 3 in Table 25-2).

> Table 25-2 Saving the Active FICON and Switch Configuration
> Number | FICON- enabled VSAN? | `active equals saved` Enabled? | Implicit`copy running start` Issued? | Notes
> --- | --- | --- | --- | ---
> 1 | Yes | Yes (in all FICON VSANs) | Implicit | FICON changes written to the IPL file. Non-FICON changes saved to startup configuration and persistent storage.
> 2 | Yes | Yes (even in one FICON VSAN) | Implicit | FICON changes written to IPL file for only the VSAN that has active equals saved option enabled. Non-FICON changes saved to startup configuration and persistent storage.
> 3 | Yes | Not in any FICON VSAN | Not implicit | FICON changes are not written to the IPL file. Non-FICON changes are saved in persistent storage—only if you explicitly issue the copy running start command.
> 4 | No | Not applicable

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