Download
Caelum — Universal install ISO
A single universal ISO image — installs on VMware, Proxmox, Hyper-V, KVM or bare-metal. Downloads go through your Caelum portal account so we can notify you of critical updates (max 1 email per release, one-click unsubscribe).
Requirements
What you need
- ▸ Installs anywhere: VMware ESXi 7+, Proxmox 7+, Hyper-V Gen2 (Server 2019+ / Windows Pro), recent KVM/libvirt or a physical x86_64 server
- ▸ Hybrid BIOS+UEFI ISO, bootable from a virtual drive or USB stick
- ▸ vCPU: 4 minimum, 8 recommended
- ▸ RAM: 8 GB minimum, 16 GB recommended (32 GB for large deployments)
- ▸ System disk: 32 GB minimum
- ▸ Data disks: based on your sizing (separate protection groups)
- ▸ Network: 1 management NIC + 1+ data NIC (LACP supported)
Verify
Check the checksum
Once the image is downloaded, verify its integrity — especially if you're going to deploy it in production:
# Linux / macOS
sha256sum caelum-0.58.1.iso
# Windows PowerShell
Get-FileHash -Algorithm SHA256 .\caelum-0.58.1.iso