Sync multiple computers with NAS

[InnoTech]

I have one master server that synchronizes with a NAS (updates the NAS with the latest files) and several remote computers then update (synchronize) from the NAS. I find a huge number of errors when several remote computers attempt to copy (synchronize) from a NAS, mainly file permissions and sync.ffs_lock errors. The remote computers connect to the NAS using SMB. My question is whether FreeFileSync is designed for multiple computers synching with a NAS or rsync is a better protocol to use?

[xCSxXenon]

Without knowing the errors, it's hard to help. The lock files that FFS creates and uses is designed specifically to facilitate multiple FFS clients accessing the same location(s). FFS works fine for this use

[InnoTech]

Here are some sample errors:
<td valign="top">11:17:04</td>
<td valign="top"><img src="https://freefilesync.org/images/log/msg-error.png" width="16" height="16" alt="Error:"></td>
<td>Cannot write file &quot;/Volumes/ToyotaB/S50/RAID-10/sync.ffs_lock&quot;.<br>
ENOENT: No such file or directory [open]</td>

<td valign="top">13:18:04</td>
<td valign="top"><img src="https://freefilesync.org/images/log/msg-error.png" width="16" height="16" alt="Error:"></td>
<td>Cannot open directory &quot;/Volumes/RAID-10/23TA04/storage/app/public/d395/d65627&quot;.<br>
EACCES: Permission denied [opendir]</td>

The error on sync_ffs_lock is referencing the remote NAS connected using SMB. And the second error on Permissions is a local hard drive. I am replicating the remote NAS on my MAC. I get 1000s of these messages with each sync.