System x3850 X6
Modular four-socket scale-up server for databases and in-memory analytics of its era.
The System x3850 X6 is an end-of-life model with no vendor support; we keep it running while you plan a replacement. Modular four-socket scale-up server for databases and in-memory analytics of its era.
Platform facts
| Vendor | Lenovo |
|---|---|
| Generation | X6 |
| Family | System x |
| Form factor | 4U rack |
| Sockets | 4 |
| CPU | Intel Xeon E7-4800 / E7-8800 v2 / v3 / v4 |
| DIMM slots | 96 |
| Memory | DDR3 or DDR4 RDIMM / LRDIMM depending on Compute Book, up to 6 TB |
| Storage | Up to 8x 2.5-inch hot-swap SAS/SATA plus eXFlash DIMM options |
| RAID | ServeRAID M5210 |
| Management | Integrated Management Module II (IMM2) |
| Released | 2014 |
| Status | end of life |
Field notes
Built from Compute Books, Storage Book and I/O Book; each has its own firmware and a mismatched book typically stops POST. Memory generation depends on the Compute Book (v2 DDR3, v3/v4 DDR4), so buy books, not loose DIMMs. Firmware via UXSPI or Bootable Media Creator. ESXi 6.7 or 7.0 at best; move to SR850 V3 or SR860 V3.
Successor: ThinkSystem SR850.
What we do with the System x3850 X6
- 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 System x3850 X6 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 System x3850 X6 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 System x3850 X6 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.