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# SMB support

PowerMax File supports SMB 1 through SMB 3.1.1. When SMB support is enabled on the NAS server, you can create SMB-enabled file systems. The NAS server with SMB support can either be stand-alone, or Active Directory domain-joined. Domain-joined NAS servers are placed in the OU=Computers, OU=EMC NAS Servers organizational unit by default.

SMB file systems and shares have the following advanced protocol options:

| NOTE: These options, except for Oplocks Enabled, are disabled by default.

Table 1. SMB advanced protocol options
Protocol option | Level
--- | ---
Sync Writes Enabled | File system
Oplocks Enabled | File system
Notify on Write Enabled | File system
Notify on Access Enabled | File system
Continuous Availability | Share
Protocol Encryption | Share
Access-Based Enumeration | Share
Branch Cache Enabled | Share
Offline Availability | Share

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