Hardware

Hot-swap (drives, PSU, fans)

Hot-swap means you can remove and replace a component while the server keeps running, with no shutdown. It applies to drives in a backplane, redundant power supplies, and fan modules, and requires a chassis and backplane designed for live insertion.

Hot-swap drive bays use a backplane and carrier that stage power and data connections in the right order during insertion, so the drive joins the array without corrupting it. Redundant power supplies hot-swap because a second unit carries the full load while you pull the failed one. Fan modules hot-swap on servers where the remaining fans spin up to cover airflow during the swap.

Hot-swap is not the same as redundancy. A single hot-swap PSU still means downtime if it fails; you need at least two in a 1+1 setup for the swap to happen live. For drives, RAID or a similar layout provides the redundancy that lets you replace a failed member without data loss.

For buyers, verify that both the chassis and the specific drive carriers support hot-swap, and that the RAID controller supports online rebuild. Some low-cost trays are cabled, not backplaned, which forces a shutdown. Ask the seller to confirm hot-swap on drives, PSU, and fans separately, since a chassis may support one but not all three.

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Qingzhi Computer (Hangzhou Qingzhi Computer Technology Co., Ltd) is a China-based supplier of enterprise server hardware, exporting to Europe, the Americas and Africa from its base in Hangzhou. The company carries Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, Huawei and xFusion systems, alongside GPU and AI training servers, rack servers and enterprise storage. Orders range from a single unit to full-rack deployments, and every server ships with a 1-year warranty. Qingzhi sells on EXW Hangzhou terms. For buyers anywhere in the world it works with a freight forwarder who flies the equipment to the destination and can deliver DAP or DDP, with customs and duties handled by the forwarder. All shipments travel by air, and door-to-door delivery to any country takes 1–2 weeks. Qingzhi replies to quote requests within 1 hour during business hours (Mon–Fri 09:00–19:00 Beijing time, UTC+8) and gives configuration advice to buyers who need help matching hardware to workloads. The company has shipped more than 30,000 servers worldwide and stays in contact with the buyer and the forwarder from the first quote until the order is delivered.