Hey again! I’ve progressed in my NAS project and I’ve chosen to go for a DIY NAS. I can’t wait for the parts to arrive!
Now I’m a bit struggling to choose an OS. I am starting with 2x10To HDD + 1To NVMe SSD. I plan to use 1 HDD for parity and to add more disks later.
I plan to use this server purely as a NAS because I will be getting a second more powerful server some time next year. But in the meantime, this NAS is a big upgrade over my rpi 4, so I will run some containers or VMs.
I don’t want to go with TrueNAS as I don’t want to use ZFS (my RAM is limited and I’m not sure I can add drives with different sizes). I’ve read btrfs is the second best for NAS, so I may use this.
Unraid seemed like the perfect fit. But the more I read about it, the more I wonder if I shouldn’t switch to Proxmox.
What I like about Unraid is the ability to add a disk without worrying about the size. I don’t care much about the applications Unraid provides and since docker-compose is not fully supported, I’m afraid I won’t be able to do things I could have done easily with a docker-compose.yml I also like that’s it’s easy to share a folder. What I don’t like about Unraid is the cache system and the mover. I understand why the system works this way but I’m not a fan.
I’ve asked myself if I needed instant parity for all my data and if I should put everything in the array.
The thing is that for some of my data I don’t care about parity. For instance, I’m good with only backing up my application data and to have parity for the backup. For my tv shows I don’t care about parity nor backup while I want both for my photos.
After some more research, I found mergerfs and snapraid. I feel that they are more flexible and fix the cache/mover issue from Unraid. Although I’m not sure if snapraid can run with only 2 disks.
If I go with Proxmox I think I would use OpenMediaVault to setup shares.
Is anyone using something like this? What are your recommendations?
Thanks!
Unraid is the absolute goat 🐐, been in production for years at my house and I’m debating deploying a second dedicated machine. 11/10 recommend.
Unraid “supports” docker compose. You can install and use it but you won’t be able to utilize how unraid handles docker containers.
All that unraid does is make docker more accessible for the normal user. In the end the container template constructs a docker run command.
So you could use portainer to manage stacks through a webui or install compose and have to SSH into the unraid server all the time.
Thanks I wasn’t sure if this was a possibility
https://xigmanas.com/xnaswp/download/
For a pure NAS purpose this is my go to. Serves drives, supports multiple file systems, and has a few extras like a basic web server and RSync built into a nice embedded system. The OS can run on a USB stick and manage the drives separately for the data.
On the ZFS front, a common misconception is that it eats a ton of RAM. What it does actually is use idle RAM for the ‘arc’ which caches the most frequent and/or most recently used files to avoid pulling them from disk. That RAM though will get dumped and made available to the system on demand though if for whatever reason the OS needs it. Idle RAM is wasted RAM so it’s a nice thing to have available.
Indeed, ZFS uses a percentage of RAM for cache. That amount is configurable. ZFS has a easier CLI, I’d recommend it for a NAS. And, allow me to say that I am not sure the comparison is between truenas scale and proxmox really. This thread reminds me of the usual distro wars when people don’t know about desktop environments (kde, gnome, xfce, etc.) as in: you can use ZFS in proxmox ;O
I was comparing Proxmox and Unraid. I had ruled out TrueNAS because it only supports ZFS. I was wrong about the RAM for ZFS, but another issue is that it doesn’t support different disk sizes
Indeed, it wasn’t clear that it was how it worked. That seems better than the cache/mover system from Unraid.
Another point as to why I didn’t consider ZFS, is that it only works with disks having the same capacities. As I will be adding disks over time, I think I will be wasting disk space
The disk size also doesn’t have to match. Creating a drive array for ZFS is a 2 phase thing:
Creating a series of ‘vdev’ which can be single disks or mirrored pairs,
Then you combine the vdevs into a ‘zpool’ regardless of their sizes and it all becomes one big pool, and it acts somewhere between raid and disk spanning where it reads and writes to all but once any given vdevs is full it just stops going there. I currently have vdevs sets in 12, 8, 6 and three 4 TB sizes for a total of 38 TB of space minus formatting loss.
Example how I have it laid out, it’d be ideal to have them all the same size to balance it better, but it’s not required.
Thanks, I’ll check ZFS again!
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:
Fewer Letters More Letters LTS Long Term Support software version LXC Linux Containers NAS Network-Attached Storage RAID Redundant Array of Independent Disks for mass storage SSD Solid State Drive mass storage SSH Secure Shell for remote terminal access ZFS Solaris/Linux filesystem focusing on data integrity
7 acronyms in this thread; the most compressed thread commented on today has 9 acronyms.
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Use Debian, no need for those over bloated systems. BTRFS as filesystem. Then setup LXD/Incus to run containers and VMs and you’ll get a very Proxmox like experience without the bloat or the nagging to buy licenses.
Some people also like Cockpit which comes with a nice UI, has basic virtual machine management features and has a Samba plugin to manage users and shares.
I’m going to disagree with this. I’ve setup everything in one Debian server before and it became unwieldy to keep in check when you’re trying new things, because you can end up with all kinds of dependencies and leftover files from shit that you didn’t like.
I’m sure this can be avoided with forethought and more so if you’re experienced with Debian, but I’m going to assume that OP is not some guru and is also interested in trying new things, and that’s why he’s asked this question.
Proxmox is perfectly fine. For many years I had an OMV VM for my file server and another server for my containers. If you don’t like what you’ve done it is much easier to just remove one VM doing one thing and switch to some other solution.
end up with all kinds of dependencies and leftover files from shit that you didn’t like.
I’ve been using debian for 10 years and never had this problem. Apt keeps everything very neat and tidy
Are you downloading random .deb packages off the internet and installing them manually?
I’m going to disagree with this. I’ve setup everything in one Debian server before and it became unwieldy to keep in check when you’re trying new things, because you can end up with all kinds of dependencies and leftover files from shit that you didn’t like.
Run your new things inside Docker OR LXD/Incus and destroy the containers/VMs when not required anymore. I don’t get your comment.
Proxmox is perfectly fine. For many years I had an OMV VM for my file server and another server for my containers. If you don’t like what you’ve done it is much easier to just remove one VM doing one thing and switch to some other solution.
And you can use LXD/Incus for that as described. LXD replaces Proxmox the difference is that it isn’t an entire OS with quirks but a simple thing you install on Debian. It will allow you to create, move, remove VMs and containers, and also has a WebUI for those interested. The irony here is that in your Proxmox setup, if you’re using containers, you’re already using LXC containers, a technology effectively created by the same people who made LXD.
But as I said, even if you don’t want LXD/Incus you can also use Cockpit, it also provides a WebUI you can use to create and manage your VMs.
Look, I never said you were wrong man. Clearly you probably have a lot more experience than i do. Which is why I said what I said. Because I personally believe Proxmox is way easier for someone who is a casual like me. That’s all.
Edit: Also, though it doesn’t really matter, I don’t use LXC.
This dude has been aggressively pushing lxc/incus like he’s paid to do it…
Think about it, if I was payed at least I was pushing for something that is actually useful and decent. :P
I personally believe Proxmox is way easier for someone who is a casual like me. That’s all.
Maybe… maybe not. Proxmox has a ready to go ISO that will setup everything up and whatnot, that’s true, but there are also the hidden small costs here and there.
I believe if you managed to install Proxmox, I’m sure you can install and use Cockpit without trouble. LXD/Incus might be another more complex weekend project but it still has an automated installer that asks you a few questions (and defaults work) to get things running.
I read a 2021 Ars Technica article on BTRFS and it was extensively critical, to put it mildly. Have things changed since then? I’m down with LXD or Incus but I don’t know if that’s the file system for me.
People like to complain a lot about things that aren’t particularly true. The default file system in Fedora and SUSE is BTRFS and I think that speaks volumes, besides others (including me) having been using BTRFS in production for serious stuff for years now. Even Synology is all up for BTRFS: https://www.synology.com/en-global/dsm/Btrfs
There are also advantages of using LXD/Incus with BTRFS, most likely taking advantage of the sub volume features and snapshots so VMs and containers run faster (each machine gets a sub volume that works like a classic partition and is better / faster than a simple folder with files). Snapshots are also a good feature as you can use them to backup and rollback your base system or the containers/VMs as well.
Don’t I need mergerfs and snapraid with BTRFS?
Also it’s not clear what LXD/Incus replaces? Is it Promox or Promox + OMV?
Don’t I need mergerfs and snapraid with BTRFS?
No. It’s just a FS like any other… actually it’s a proper filesystem unlike Ext4. Why would you need those tools? https://wiki.tnonline.net/w/Btrfs/Profiles
Also it’s not clear what LXD/Incus replaces? Is it Promox or Promox + OMV?
It replaces Proxmox and can run both containers and VMs, but it isn’t an entire OS, it’s just something you can install on a clean Debian system (from the Debian repository) and enjoy it.
Some people also like Cockpit which comes with a nice UI, has basic virtual machine management features and has a Samba plugin to manage users and shares.
… actually it’s a proper filesystem unlike Ext4.
My dude. Just… No. 🙄
Thanks, I’ve seen Incus have an online demo, this is nice, I’ll give it a try.
For BTRFS, if I understand correctly, I can have a similar result as mergerfs if I use SINGLE. But as RAID5/6 is unstable it seems I would still need snapraid, or am I missing something?
Btrfs is great, but you’re right that their own documentation advises against RAID in a production environment. People tend to use mdraid to achieve redundancy and Btrfs on top of it for the other features.
BTW, you mentioned not using ZFS because of differently sized disks. That’s exactly one of the use cases for ZFS. Its RAID z1/z2/z3 modes provide for dynamic stripes that allow you to lose 1, 2, or 3 disks in a vdev, regardless of disk size. Oh and the ram thing is that it will use any idle ram for caching, to speed your disks. But it promptly releases it back to the system if another process needs it. Basically, the more ram you have, the more it will accelerate your disk operations.
“Need” is a strong word. But yes BRTFS RAID 5/6 is unstable but unless you’re only after space efficiency RAID 5/6 shouldn’t be used at all, those shames will put you on the worst position possible if something fails (and also low throughput). When you try to rebuild a RAID 5 with large drives it will probably go into days and you’ll be risking the failure of a second drive and lose everything right there.
Btw, give a try to Cockpit as well. If you don’t require much of the advances features that Proxmox / Incus offer and just a bunch of VMs then it should be enough.
“Need” is a strong word. But yes BRTFS RAID 5/6 is unstable but unless you’re only after space efficiency RAID 5/6 shouldn’t be used at all, those shames will put you on the worst position possible if something fails (and also low throughput). When you try to rebuild a RAID 5 with large drives it will probably go into days and you’ll be risking the failure of a second drive and lose everything right there.
I’ve had a RAID5 for 10+ years, had drives fail and I’ve replaced them. Rebuilds are fine and rare. It’s very unlikely to have two drives fail within a week of each other and I don’t want to only get 1/2 my disk space. RAID6 makes that small chance even smaller. If you’re worried about loss you have backups - RAID is for uptime not recovery.
You seem to think the way you’ve done things is the one and true right way to do it and that’s not the case.
You seem to think the way you’ve done things is the one and true right way to do it and that’s not the case.
Not at all and I totally agree with what you’ve said. To clarify things, I’m not the only one saying people should stay away from RAID 5/6, even large vendors say that nowadays, and the issue is when a drive fails, if you’ve to run for hours to get a new one rebuild a second hard drive is highly likely to fail on that time - specially if they’ve the same runtime, model etc.
Obviously that having a real backup will solve the issue, as long as you can retrieve the data from the backup quickly and cheaply enough and that’s not always the case.
if you’ve to run for hours to get a new one rebuild a second hard drive is highly likely to fail on that time - specially if they’ve the same runtime, model etc.
If you’re running a 2-disk RAID-1 you have the same problem.
And I restate - that risk is small. You’re not running a data center where you have thousands of disks to see the effect.
Ok thanks.
Do you use anything to manage disk failure?
Yes, smartmontools.
TrueNAS supports different drive sizes, in the same way other systems do, from what I’ve read.
Oh ok I wasn’t sure about this. But I think TrueNAS only supports ZFS and this would be an issue on my system
Tried OpenMediaVault but found vanilla Debian on Proxmox is the easiest to troubleshoot. This guide helped me set it up. MergerFS works great with mismatched sizes of drives, and doing parity on media server content is a good use for SnapRAID.
Yes this is where I first heard of mergerfs/SnapRAID. But I didn’t realize this guide wasn’t using any software on top of Proxmox. I’ll read again, thanks!
One note which may not apply to you, I installed my Proxmox to boot from 2 256G SSDs as a basic RAID 1 mirror and only have the bare minimum data in VM storage to reduce size of backups. Backup retention on the boot drives is limited because a cron job on the VM handles copying backups to the MergerFS pool for longer term storage.
Moving docker’s data directory to the ‘slow’ drives was a helpful decision, this post covers the old/wrong ways to do that and the way which worked (data-root). Docker data doesn’t take up a huge amount of space, but it saved me some work recently when I found my media server had been down for a while and couldn’t remember when it worked last to identify a working backup. I spun up a fresh Debian image and ran through the steps to reinstall the stack, and point to the same Docker data path. Running the same Docker compose command got most services working with the old metadata, though others i renamed/removed the service’s path and reconfigured.
My docker-compose and its revisions are the extent of a backup I need for a piracy box as my internet is quick enough to recreate my library within a couple days if needed.
While I personally use Unraid, something similar you can do is use MergerFS and SnapRAID. This will provide you with similar functionality to Unraid, where you can pool your drives together and create a parity disk. Open media vault has easy plugins for both SnapRAID and MergerFS.
Many good suggestions on here. I have Rockstor running on mine. When I built my NAS, it was the only OS that used BTRFS for the FS (and I really like BTRFS) so I went with it.
Edit: also I have it running in Proxmox as a VM.
Debian!
I enjoy Ubuntu server. At the end of the day I just want something simple. I run most of my services in docker compose, and zfs for the filesystem.
@normalexit out of curiosity: Why not a plain debian? What are the benefits of Ubuntu server?
I use Ubuntu server as well and for me it mainly was that I was already familiar with the Ubuntu way of doing things. :D And Ubuntu Server has a few more convenience features like kernel livepatching. And I think the software on Ubuntu LTS is a bit less outdated than that on Debian stable
How do you manage your shares?
I just found out that Blue Iris is made for Windows, so I guess I’ll be running BlueIris, NAS, and torrents back on windows, probably ltsc.
I know I could try a vm or other such, but I don’t feel like fighting BlueIris preferences.
Blows my mind that a “security and privacy” system like BI isn’t native to Linux.
