> # Performance Manager Authentication

> Performance Manager uses the user name and password information stored in the Cisco DCNM-SAN Server database. If this information changes on the switches in your fabric while Performance Manager is running, you need to update the Cisco DCNM-SAN Server database and restart Performance Manager. Updating the Cisco DCNM-SAN Server database requires removing the fabric from Cisco DCNM-SAN Server and rediscovering the fabric.

> ## DETAILED STEPS

> 1. Click Server > Admin in Cisco DCNM-SAN.

> You see the Control Panel dialog box with the Fabrics tab open .

> 2. Click the fabrics that have updated user name and password information.
> 3. From the Admin listbox, choose Unmanage and then click Apply.
> 4. Enter the appropriate user name and password and then click Apply.
> 5. From the Admin listbox, choose Manage and then click Apply.
> 6. To rediscover the fabric, click Open tab and check the check box(es) next to the fabric(s) you want to open in the Select column.
> 7. Click Open to rediscover the fabric. Cisco DCNM-SAN Server updates its user name and password information.
> 8. Repeat Step 3 through Step 7 for any fabric that you need to rediscover.
> 9. Choose Performance > Collector > Restart to restart Performance Manager and use the new user name and password.

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