NAS1> options cifs.smb2.signing.required
cifs.smb2.signing.required off
NAS1> options cifs.smb2.signing.required on
NAS1> options cifs.smb2.signing.required
cifs.smb2.signing.required on
Windows2012 cannot access netapp CIFS share
原文：http://www.cnblogs.com/oskb/p/4182557.html