7-Mode Snapshot directory and nosnapdir

It happens, especially in case of failover\giveback, that CIFS shares dedicated for NetApp snapshot directory are not any more accessible while underlying volume has nosnapdir option turn on.

A nosnapdir option is dedicated for those ones appreciating strong security on their snapshots (due to company security/audit policies). After all, this option restricting access to NetApp snapshot directory not only to clients, but also to filer itself. Our snapshots are really safe, but in case we would like to retrieve some files that names we are not aware of, we can’t use snap restore from CLI.

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NetApp 7-Mode – CIFS overview

CIFS – acronym comes from Common Internet File System. It’s described as Microsoft network file sharing protocol, allows access and manipulate files and folders on remote servers as if they are on local machines.


  • Network browsing to locate machines within domains/workgroups and available shares.
  • User authentication.
  • Authorization at the share, folder and file level.
  • Basic file attributes: Read-only, Archive, System, Hidden.
  • Extended NTFS file attributes for indexing, compression and encryption.
  • Unicode support.
  • Opportunistic locks.
  • Dialect negotiation – each protocol version is defined as dialect.


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