Blog
News, guides, and product updates from Obelinf.
Water Usage and Heat Reuse in Data Centers
What WUE reveals about data center water consumption, how heat reuse and ERF capture recovered energy, and how to read CUE and sustainability metrics beyond PUE.
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Homelab Cooling Beyond the Fan Swap: Closets, Vents, and Intake Paths
Why a sealed closet defeats any fan upgrade, how to vent a homelab closet so cool air enters low and heat leaves high, and how to keep the intake path clear from room to rack.
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IoT on Its Own VLAN: Keeping Smart Bulbs Away From Your NAS
Your smart bulbs should not share a network with your NAS. Learn how an IoT VLAN isolates untrusted devices, which firewall rules matter, and how to set it up step by step.
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Proxmox vs ESXi vs Hyper-V: Picking a Hypervisor
Proxmox VE, VMware vSphere, and Hyper-V compared for 2026: how each one is built, what licensing actually costs, and a practical decision path for your team.
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Tracking IPs, VLANs, and Devices Before They Multiply
Set up the habit of tracking IPs, VLANs, and devices while your network is still small, before retroactive documentation and the first IP conflict catch up with you.
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UniFi vs Omada vs Aruba Instant On: Home WiFi Access Points Compared
UniFi, Omada, and Aruba Instant On are the three most common ways to upgrade home WiFi from a single router. This guide compares their management models, real costs, and when each makes sense.
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ZFS vs BTRFS vs EXT4: Filesystem Choices for a NAS
ZFS, BTRFS, and EXT4 compared for a NAS: how each one protects your data, what they ask of your hardware and your patience, and how to match the filesystem to the box you are building.
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BYO IP vs ISP-Assigned Space: PA vs PI Addresses When You Switch Providers
PA space belongs to your provider and PI space belongs to you. Learn how that distinction determines what happens to your addresses when you change ISPs, what BYO IP really requires, and when each choice makes sense.
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Fixed Wireless and LEO Satellite as ISP Backup: When to Use Them Over Broadband
When a second broadband line is not diverse enough, fixed wireless and LEO satellite give you true path independence. Learn where each fits, what it costs, and how to size and test a wireless backup that actually fails over.
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How to Switch ISPs Without Downtime: IP Renumbering, DNS and Cutover Planning
Switch ISPs without downtime by planning IP renumbering, DNS TTL strategy, and a parallel cutover that keeps your network reachable throughout the migration.
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ISP Diversity Audit: How to Prove Two Providers Don't Share the Same Fiber
Two ISP contracts do not guarantee diverse fiber. Learn how to audit physical paths, local loop ownership, and routing to prove your providers are truly independent.
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NFS vs SMB vs iSCSI for Homelab Storage: What to Use Where
NFS, SMB, and iSCSI compared for homelab storage: how file and block sharing differ, where each protocol shines, and what to use for media, backups, VMs, and databases.
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