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Engineering notes from the people running the network

The ZetServers blog.

Hosting, bandwidth and network engineering written by the team that operates AS 25198 — unmetered capacity, peering, storage and the trade-offs behind them.

Posts
24
Topics
7
Written by
ZetServers engineers

Choosing an uplink speed: peak, headroom and cost per gigabit

Monthly transfer is the wrong starting point, because a port is a rate. Size from peak concurrency, per-unit bitrate and headroom — then check the cost per gigabit of each tier, because that curve is not monotonic and the cheapest gigabit is not where most people buy.

·Bandwidth

Dedicated server vs VPS: where the KVM ceiling actually is

A virtual machine is a slice of a box; a dedicated server is the box. The useful question is where the slice stops being enough. Four ceilings decide it — single-thread speed, disk latency, packet rate and RAM — and an afternoon of measurement settles it better than a year of guessing.

·Dedicated Servers

Building a CDN origin server: sizing and caching

The edges take the load until a purge, a deploy or a cold region sends every one of them to the origin at once. Hit-ratio arithmetic, the cache headers that are the whole contract, and which machine to actually build.

·Bandwidth

NVMe vs SATA vs HDD: picking disks for a server

All three are still shipping because they solve different problems. The interface ceilings, the queue models, the DWPD and power-loss specifications that actually matter, and how to pick the mix for your working set.

·Storage

Concurrent viewers per server: where the ceiling is

The port sets the ceiling; disk, TLS and connection state decide the number you actually reach. Bitrate arithmetic for every tier, a worked 10 Gbps live example, and the three resources that run out before the network card does.

·Bandwidth

The new ZetServers website

Same network, same team, a site that finally explains it. Specs and prices in the open, live stock on every server table, and eight languages.

·Company
Tweaksv1
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