Before I go on and share my unorthodox approach to backup clones, I want to address the
possible issue you may be having with the NAS and directory access.
Now, I'm not for sure this is the issue or not, but to me this sounds straight up Samba/NetBIOS BS related. And I say "BS" because Samba is a weak horse when it comes to network shares and NAS access. And NetBIOS is weak sauce in so many ways in terms of security it isn't even funny. This is why I don't use it and turn it off in all network adapters. Even then, I still see creeper Windows reach out on the network to other computers in the house while I'm monitoring my network with a network packet sniffer. I've also read time and time again people having NetBIOS/Samba issues on various tech forums for years and years.
Now get this. If you live in the U.S. you would be familiar with the ISP Comcast. Well, back "in the day" (probably around 15 years ago) people that used Comcast were able to browse other people's computers who were also using Comcast through NetBIOS. This was because of the way the cable broadband ISP operated withen a whole neighborhood. Like a network. LOL! That issue has since been fixed however. But it goes to show you why NetBIOS can be a weak sauce who's a close relative of diarrhea.
Here's an old article on the issue.
Here's another.
My solution for file transfers? A local only FTP server. Yes, it's mundane, slow and archaic, but it works for me quite well. The better solution would perhaps be WebDAV. If you use WebDAV you can use the excellent FTP client WinSCP to not only browse FTP/SFTP directories, but WebDAV directories as well. WinSCP also supports AWS S3, but I found it slow. For S3 I use the program S3 Browser.
If you want remote access to your FTP/SFTP/WebDAV server without a compromise in security via port forwarding, look no further than
Zerotier. This is a program that does NOT need open ports in the router/modem for remote access. It works much like a screen sharing program would work by being a client that creates an IP connection to ZeroTier's servers of which you can connect to and then connect to your resource at home. Be it the aforementioned WebDAV server, NAS server, Team Speak server, your own private Bitwarden (an awesome password manager I currently recommend) server, or some other server. I could roll a small LAMP stack using XAMPP and create a private Wikipedia at home that I can access just for me. The Wiki software is free and open source if I'm not mistaken. I believe the CIA has their own private version who's name I can't remember now. Anyway, you get the point. If you do need open ports, I'd deploy the Pfsense firewall. For FTP browsing on my Android mobile devices, I use the AndFTP App. I'm sure iOS has similar Apps as well.
I like this ability because if I take a very juicy photo, like a crime taking place or what ever, I can immediately upload it at home for safe keeping in my own encrypted possession.
Now onto my unorthodox approach to disk cloning in response to your question for alternatives.
Since I roll FDE (Full Disk Encryption) on all of my computers, I need a very special way to not only clone the HDD sector by sector, but I also have to dump that cloned image to an encrypted container to mitigate cryptanalysis. (Yes, I'm a freaking nerd! But it's all part and parcel of the "nerd ethos", and if I know how to do it, why not)?
So, in the beginning I used to use an awesome and very vestal "bit of kit" called
Clonezilla. This is a Linux live boot CD (USB) and will clone sector by sector and works quite well for an FDE HDD. I have used Clonezilla to clone back to new hard drives I have bought so I know it works. And if NAS/cloning is your thing, Clonzilla supports a
server version as well. Yes, it's massively nerdy and requires you to read and learn, but believe me, you'll be far better off than paid-for propriety crap. I don't like keeping my hard drives exposed so I store all backup hard drives and media in ~ $35 fireproof safes. I own three thus far. LOL They WON'T keep someone out. They're strictly for fireproofing. WHat good is a data backup if God forbid your houe burns down and alone with it very importat data? Now-a-days, data is as important as a paper birth certificate, renter's agreement, home deed, Social Security card, passport, title to a car, etc. Yes, all that is in my safe's as well. Pro tip: Don't trust a bank's safety deposit box. For one, authorities can take custody of the contents, where's they'd need a judge to sign off on a warrant for your house. And if disaster strikes at the bank, your SOL.
I mentioned "I used" to use Clonezilla. I now conduct my cloning operations differently as it pertains to FDE needs. And this is probably very niche and unorthodox.
What I do is install
Ventoy on a USB drive of some sort (could even be optical media, I'm sure. Haven't tried) and since Ventoy just boots ISO files straight away, I copy the Hiren's Boot CD PE ISO file to the USB drive, and other ISOs like Memtest86 and what not. Then I copy/paste
HDD Raw Copy Tool (it's portable) to the USB drive. As well as Veracrypt portable and other portable software. The portable Apps website has a boat ton, and a whole portable Apps suite.
Now I connect my destination HDD for the clone and boot the USB stick containing Hiren's Boot CD PE. This will boot up a Windows 10 PE operating system enviroment from which to work from. Once I have a running Windows environment I go to "This PC" on the desktop and navigate to the root of the USB drive where HDD Raw Copy Tool is located. Now I can clone my main drive with HDD Raw Copy Tool as an IMG file onto the destination drive. Prior to that however, I first use Veracrypt portable to create an encrypted file container that's as large or larger than the source drive (my current OS drive) onto the destination drive for the clone. Then I have HDD Raw Copy Tool write the clone IMG file to that encrypted file container on the destination drive.
Of course, you don't have to use Veracrypt and the methods I outlined above if you don't deploy FDE like Truecrypt, Veracrypt, Bitlocker or some other FDE software. In all cases the cloning process is the same: Have HDD Raw Copy Tool clone from the source disk to the destination disk. Either as an image file, or as a direct 1:1, sector by sector (raw) clone to the destination drive. The one big issue with a sector by sector clone that HDD Raw Copy Tool does is that it will create the same physical drive size on the destination drive. So, if you're needing to change partition size after the clone, the free version of
DiskGenius should do the trick. It also has a clone feature. But I've never used it. There's even a
portable version.
If you want to turn your currently installed Windows OS into a live bootable environment, I guess WinToUSB will do that, But I have yet to try this. I'm thinking about creating a stripped down version of 7 using NTLite just for SDR (Software Defined Radio) stuff, my scanner programs ("police scanner") and all around general use like
taking over the world and what not.
Alternatives to FreeNAS (TrueNAS).
One day I may use a Raspberry Pi for a NAS. Still trying to debate what I should do with the one I got now though. I don't want to use it for a NAS right now. Thinking perhaps for Virtual Radar Server for my own personal use. I ran that software in Windows.