Univention Corporate Server
Zentyal
NethServer
ClearOS
FreeIPA
OpenLDAP
Samba
Microsoft Active Directory
Unraid
TrueNAS Core
OpenMediaVault
XigmaNAS
Amahi
Rockstor
PetaSAN
ReadyNAS
Univention Corporate Server (UCS) is a free platform designed to operate and manage server applications, user identities, and complete IT infrastructures. Whether you are aiming to deploy Microsoft Windows, Mac OS X or Linux systems: UCS is suited perfectly for the management of distributed, heterogeneous and virtualized IT environments. Its integrated identity management system allows the simple administration of users, identities, applications. Firthermore, the central management of server and desktop systems can be managed via an intuitive web interface. UCS has its own App Center where users find multiple applications (like Nextcloud, ownCloud, Collabora, ONLYOFFICE, Jitsi and many others). These apps can easily be integrated into the IDM of UCS. Users can easily access these applications via an online portal via single sign-on. Another prominent feature is that UCS offers AD functionality and an AD Connector to operate UCS parallel to a Windows Server.
UnraidBased on our record, Unraid seems to be more popular. It has been mentiond 13 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Really: I've got a Synology 10-disk unit in JBOD mode (each drive independent, but see SnapRaid) containing backup of backups and recent set of 4x 14TB unopened drives. I'm working at building a new UnRaid system to contain everything; I just need to confirm the power supply max load and if I can stagger the drives to avoid the maximum inrush. RAID5 is great (but Is Not A Backup), UnRaid is a "daily" RAID5... Source: over 1 year ago
As an example, I have qemu+kvm host running my VMs (NAS, plex, Nextcloud etc.). As for NAS OS, TrueNAS is a great options. With different drive size you can consider UnRAID. It allows to pool drives of a different size. https://unraid.net/product. Source: over 1 year ago
You can turn a PC case into a NAS with NAS OS like openmediavault (https://www.openmediavault.org/), unraid (https://unraid.net/product), or TrueNAS Core (https://www.truenas.com/docs/core/gettingstarted/corehardwareguide/). They require +8 GB RAM (Unraid system requirements say 4 and OMV is ok with +1GB RAM). To start, I'd go with openmediavault. If you need it to be windows, say, using for anything else, you can... Source: almost 2 years ago
Take a look at using unraid as a backup server. https://unraid.net/product. Source: almost 2 years ago
In case you are interested in software options. UnRAID is a nice option. Https://unraid.net/product. Source: almost 2 years ago
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
TrueNAS Core - TrueNAS Core (formerly FreeNAS) is a storage operating system strong and robust enough to meet the needs of enterprise level businesses.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
OpenMediaVault - OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.
ClearOS - A very good alternative for Windows Server, for free
XigmaNAS - File Sharing, OS & Utilities, and Security & Privacy