> # Cisco MDS NX-OS Features Using CFS

> The following Cisco NX-OS features use the CFS infrastructure:

> - N Port Virtualization
> - FlexAttach Virtual pWWN
> - NTP
> - Dynamic Port VSAN Membership
> - Distributed Device Alias Services
> - IVR topology
> - SAN device virtualization
> - TACACS+ and RADIUS
> - User and administrator roles
> - Port security
> - iSNS
> - Call Home
> - Syslog
> - fctimer
> - SCSI flow services
> - Saved startup configurations using the Fabric Startup Configuration Manager (FSCM)
> - Allowed domain ID lists
> - RSCN timer
> - iSLB

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