It is a performance hit to turn it off though. This is a security hole, so you might want to turn it back on if your NAS supports it.

One small note is that on old MacOS, you have to turn off SMB packet signing, although new versions turn this off by default.

Apple has switched to the new SMB 2/3 protocol and AFP is unreliable, so the correct incantation is smb:// your_server_name._smb._tcp.local The problem is that this network share would keep dropping connections. So I normally just go to the Finder > Go > Connect to Server and then there is a funky url that looks like afp:// your server_name.afpovertcp._tcp.local which means use the Apple File Protocol over TCP and then use TCP on the local network.On one of my Mac's I've had a long term problem with connections failing, I can see the network share, but it says Connection Failed and if you click on Connect As nothing happens.You could write a program to look through every entry in the current hash file and then just look for things not there, but then you have to parse the hashdeep file which is a pain. The other problem is that there isn't a restart option, so if you lose the network connection, it has to start all over which is pretty sad.Also, when you do the comparison, you need some more flags specifically -a -vv -k _hashfile_ which means run an audit and the the double v means show the results for bad hashes. Hashdeep isn't super convenient in that there isn't a way just to compare two hashdeep files, no matter how you run it, you have to run a hash against something.The options are more complicated but -c sha256 -rl is a good base which means use SHA256 as that's harder to hack and then do the hashing recursively and make the paths in the hashdeep file relative. You can then when copying compare to see if things have changed. It goes through files and generates checksums for each and sticks them in a directory. Hashdeep is a slow but useful utility.Using a checksum is good but slower, so perfect for archiving But the best flags are -acP which means copy All, use a Checksum as opposed to just a file and date check and show a Progress bar. The parameters are tricky though, so it is best done in a script. Rsync is a great utility for copying things.It's a project that I've done off an on for a long time and it is nearly done! I want a reliable way to copy things and maintain checksums on long term backups. Ok I'm trying to do something a little crazy.

Smbup connection problems