Server buying guides.

The questions a product page cannot answer on its own: which generation a machine really is, what to ask before buying refurbished, and which shape of server fits the room and the workload.

Server generations across vendorsFive vendors, five ways of counting. One table that lines the generations up by processor, and how to date a listing that does not say which one it is.
Buying a refurbished serverThe questions to put to any refurbished server seller before you order — the generation, the exact build, the grade, what was tested and who stands behind the warranty.
1U, 2U or towerWhat a 2U chassis buys over a 1U one, when a tower is the right answer, and why a blade is a chassis decision before it is a server decision.
NVIDIA HGX B300 serversThe HGX B300 systems we quote, what separates them, and how a B300 order runs: configuration and allocation from the manufacturer, end-user certificate required.
iDRAC, iLO and XClarity licences on a used serverWhere Dell, HPE and Lenovo keep the remote management licence, whether it stays with a used server, and which tier the remote console needs.
End of sale, end of support, end of lifeWhat changes at each end-of-life milestone for parts, firmware and support, in the vendors' own terms, and how to buy hardware the vendor no longer sells.
How a refurbished server is testedWhat our bench does to every unit, what deeper testing is quoted on request, and which record to ask any seller for before you order.
How to check a hardware sellerSerial numbers you can check with the vendor, what "compatible" means for support, and the answers that should end the conversation — for any seller, ours included.