Mount Settings for ZFS

Do you want to use New Block Security processing (NBS):

This specifies whether New Block Security is used for file systems in this aggregate. New block security refers to the guarantee made when a system crashes. If NBS is specified then there is a guarantee that at the time of a crash, if a file was being extended or new blocks were being allocated for the file, but the user data has not yet made it to the disk when the crash occurred then we show the newly allocated blocks as all binary 0’s and not whatever was on disk in those blocks at time of failure. The default for this is NONBS since NBS degrades performance and it is rare that you would have a case where the metadata updates are committed but the corresponding user updates are not on disk. However, in the case of high security requirements, this specification provides this guarantee.

Default Value: Off

Range: On or Off