ThinkSystem ST50
Very small office tower for a first server, POS back-end or a single Windows Server role.
The ThinkSystem ST50 is a legacy model past vendor sales, usually out of warranty but still serviceable. Very small office tower for a first server, POS back-end or a single Windows Server role.
Platform facts
| Vendor | Lenovo |
|---|---|
| Generation | Gen 1 |
| Family | ThinkSystem |
| Form factor | Mini-tower |
| Sockets | 1 |
| CPU | Intel Xeon E-2100 / E-2200 (also Core i3 and Pentium options) |
| DIMM slots | 4 |
| Memory | DDR4 UDIMM, up to 64 GB |
| Storage | Up to 4x 3.5-inch simple-swap SATA, optional M.2 |
| RAID | Onboard Intel SATA RAID (software) |
| Management | No dedicated BMC (no XCC) |
| Released | 2018 |
| Status | legacy |
Field notes
There is no XCC, so remote power and console need an external KVM or smart PDU; plan for that before placing it off-site. Drives are simple-swap, not hot-swap, so a failed disk means a shutdown. Firmware is a UEFI package run from Windows or a bootable USB. Windows Server 2019/2022 fine; hypervisor use is best-effort. Buy the ST50 V3 or ST250 V3 for anything you want to manage remotely.
Successor: ThinkSystem ST50 V2.
What we do with the ThinkSystem ST50
- Specification and procurement of ThinkSystem servers
- Rack installation, XCC setup and UEFI/firmware baseline
- Memory, NVMe and RAID upgrades with qualified parts
- Out-of-warranty repair and spare sourcing for System x and ThinkServer
- OS and hypervisor installs
- Lenovo support case handling and refresh planning
Keep it or replace it?
A ThinkSystem ST50 can keep doing a single job for years if it has good backups, current firmware and spare parts on the shelf. It should not be the only copy of anything, and it should not be internet-facing on an unsupported OS. We will tell you honestly whether a memory or disk upgrade buys useful time or whether the money belongs in a replacement.
Replacement planning covers the OS and licences, not only the box: a ThinkSystem ST50 running Windows Server 2012 or an old ESXi needs a migration plan, not a lift-and-shift.
Related models
Related services
Frequently asked questions
Is Lenovo a good alternative to Dell?
Yes. ThinkSystem servers are equally reliable, often priced sharply, and XClarity management is mature. We support both and recommend whichever fits the existing fleet.
Can you still service System x servers?
Yes. System x M5 and X6 systems are legacy but parts are available and we keep them running while planning a replacement.
Can the ThinkSystem ST50 run a current operating system?
Check the field notes above. As a rule, current models are certified for Windows Server 2022/2025, ESXi 8 and RHEL 9; legacy models usually stop at Windows Server 2019 or ESXi 7 and may need Proxmox or an older Linux to stay useful.
Need a hand with this?
Tell us what you are running and what is slowing you down. You get a straight assessment and a plan, with no obligation. Support desk is staffed 24/7.