Datasheet
Caelum
Software-defined SMB/NFS NAS with transparent S3 tiering. Your cold files move automatically to object storage — your users never notice. Built by GaLiLo, a French storage software vendor.
High-performance local storage
- ✓ ZFS pool: Mirror, RAIDZ1/2/3 or single disk, scheduled immutable snapshots
- ✓ Transparent compression (lz4), optional per-volume deduplication
- ✓ Multiple pools (primary + additional), quotas volume / share / user / group
- ✓ Simultaneous POSIX and Active Directory ACLs, scrub + SMART alerts
Archiving & S3 cloud
- ✓ Cold files replaced by offline stubs, transparent recall
- ✓ Cloud destinations: AWS S3, MinIO, Wasabi, Ceph, Backblaze B2 (any S3 API)
- ✓ Archive policies (scope global / volume / share), first run as a dry-run
- ✓ Partial range streaming over SMB + S3 Cache mode, multi-destination and auto-purge
High availability (2 modes)
- ✓ Shared storage: ZFS pool on LUN/SAN, transparent failover (zero RPO) — SAN + fencing required in prod
- ✓ Replication ("Option A"): local pool per node, async mirror, RPO = interval, manual failover
- ✓ Config replication + domain NTFS ACL fidelity to the passive node
- ✓ Shared-disk detection recommends the mode; RPO + split-brain acknowledgements
Assisted migration
- ✓ Discovery of source shares (NetApp, Synology, Windows Server)
- ✓ Incremental streaming copy, resume on error
- ✓ Domain Windows ACL preservation (owner, ACLs, DENY)
- ✓ Assisted cutover: re-create shares then DNS/UNC repointing + checksum validation
Security & anti-ransomware
- ✓ SMB veto on ~130 known ransomware extensions
- ✓ Immutable snapshots + one-click Windows Previous Versions
- ✓ Native NTFS ACLs, enforceable SMB3 encryption, access log (SIEM)
- ✓ AD join or local accounts, email alerts on suspicious events
Networking & connectivity
- ✓ Role-based networks: management, data, cluster, replication, cloud/S3, iSCSI
- ✓ 802.3ad bonding (LACP), 802.1Q VLAN, jumbo MTU, 60s anti-lockout network test
- ✓ iSCSI targets (remote LUN as a pool disk), Multipath (MPIO)
- ✓ Automatic network discovery (Windows "Network" + macOS Finder)
Management
- ✓ Single-page UI, self-documented OpenAPI REST API, full CLI
- ✓ Update from the UI (snapshot + 1-click rollback), beta channel, air-gap install
- ✓ Sovereign AI assistant (hosted in France, GDPR; never sees file contents)
- ✓ Built-in Web Shell, centralized logs, email alerts (SMART, storage, jobs, audit)
Deployment
A single universal ISO image, BIOS+UEFI hybrid, installable identically on:
- ▸ VMware / vSphere (ESXi 7+)
- ▸ Proxmox VE 7+
- ▸ Hyper-V (Gen2, Server 2019+ / Windows Pro)
- ▸ KVM / libvirt
- ▸ Bare-metal x86_64
Boot, install, start — then finish configuration via the web wizard.
Hardware requirements
| vCPU | minimum 4, recommended 8 |
|---|---|
| RAM | minimum 8 GB, recommended 16 GB (32 GB for large deployments) |
| System disk | 32 GB minimum, dedicated |
| Data disks | per your sizing (separate protection groups) |
| Network | 1 management NIC + 1+ data NIC (LACP supported) |