News & Blog
Latest news from the world of IT. TrueNAS, Proxmox, OPNsense and more.
NetBox as a DCIM Starter Kit for SMBs
NetBox as DCIM and IPAM for SMBs: model sites, racks, devices and IP addresses cleanly, ready in four hours, integrated with Ansible and Prometheus.
Proxmox Storage Migration Live — Without Downtime
Migrate Proxmox VM disks live between storages: qm move-disk, Ceph to ZFS, NVMe pool swap during business hours with zero production downtime.
Ceph Recovery: 3 Typical Mistakes and How to Avoid Them
Ceph recovery under pressure: these three mistakes turn a manageable cluster event into a real outage. Here is how to handle it in a structured way instead.
We Won a TERRA Citan: Why Strong Hardware Partners Matter More Than Ever in 2026
DATAZONE wins a Mercedes Citan in TERRA design from Wortmann. What the van has to do with AI-driven server prices, supply chains and long-term partnership.
systemd-networkd vs. NetworkManager: When to Use Which on Servers
systemd-networkd or NetworkManager on Linux servers? Comparison of the two network stacks with bridge, VLAN and migration examples for Proxmox, KVM and containers.
OPNsense Suricata: Rule Tuning Without False-Positive Floods
Tuning Suricata in OPNsense properly: ET/Open vs. commercial rulesets, threshold and suppression lists, SIEM integration and IOC rules against alert fatigue.
TrueNAS Snapshots as a Forensic Tool After Ransomware
ZFS snapshots do more than restore data after ransomware. With zfs diff, snapshot timelines and chain of custody they become a full forensic tool.
Proxmox Templates + Cloud-Init: A Practical Workflow
Automate Proxmox templates with Cloud-Init: from cloud image to reproducible VM deployment with a Bash script that rolls out 10 VMs in under 60 seconds.
Vacation Mode: Monitoring and Alerting with Reduced Staffing
Monitoring and alerting for SMB vacation mode: severity tuning, on-call rotation with Grafana OnCall, escalation chains and ticketing at 30 percent staffing.
Backup Practice: 30-Day Rotation and Restore Drill
30-day backup rotation with grandfather-father-son plus quarterly restore drill: RTO/RPO matrix, verification and typical silent failure patterns in SMB.
Server Room: Planning Power and Cooling for SMBs the Right Way
Planning power and cooling for 5-15 kW SMB server rooms: load calculation, UPS redundancy, precision cooling and monitoring in practice.
Linux ZFS Boot Mirror Broken: 4 Rescue Approaches
A broken ZFS boot pool takes Proxmox and Ubuntu offline. Four field-tested paths back to a running system via live ISO, chroot and bootloader rebuild.
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