From $750 USD — built to order from tested, warrantied stock.
The Lenovo ThinkSystem ST550 is a refurbished 4U Rack-mountable Tower server (Xeon SP Gen 1 / Gen 2) for the 1st Gen Intel Xeon Scalable, 2nd Gen Intel Xeon Scalable, DDR4 · up to 768 GB · 12 DIMM slots · up to 3200 MT/s · 6 channels per CPU · ECC. Drive layouts: 16x 2.5-inch SAS/SATA hot-swap; 20x 2.5-inch SAS/SATA hot-swap; 8x 3.5-inch SAS/SATA hot-swap; 8x 3.5-inch + 4x 2.5-inch SAS/SATA hot-swap; 8x 3.5-inch SATA simple-swap; 4x 3.5-inch SAS/SATA hot-swap. Every unit is tested, warrantied and shipped from Canada; configure it online with parts that are checked for compatibility.
Best for: storage, virtualization, database, general.
| Form factor | 4U Rack-mountable Tower |
|---|---|
| Generation | Xeon SP Gen 1 / Gen 2 |
| CPU | 2 socket(s) · 1st Gen Intel Xeon Scalable, 2nd Gen Intel Xeon Scalable · LGA3647 · up to 22 cores per CPU · max 125 W TDP |
| Memory | DDR4 · up to 768 GB · 12 DIMM slots · up to 3200 MT/s · 6 channels per CPU · ECC |
| Drive bays | 16x 2.5-inch SAS/SATA hot-swap; 20x 2.5-inch SAS/SATA hot-swap; 8x 3.5-inch SAS/SATA hot-swap; 8x 3.5-inch + 4x 2.5-inch SAS/SATA hot-swap; 8x 3.5-inch SATA simple-swap; 4x 3.5-inch SAS/SATA hot-swap |
| Storage controllers | 6 Gb Onboard SATA AHCI, 6 Gb Onboard SATA RAID (Intel RSTe), 12 Gb SAS/SATA RAID adapters with up to 8GB flash-backed cache, 12 Gb SAS/SATA HBA (non-RAID), 930-8i, 530-8i · boot: M.2 adapter (1x M.2 drive), M.2 adapter (2x M.2 drives in RAID 1) · M.2 boot |
| PCIe | Gen 3.0 · 7 slots · 4× x16 |
| Networking | 2x 1GbE 1000BASE-T (Intel X722) |
| GPU | up to 2 GPUs · 2 double-width |
| Power | 550W Platinum, 750W Platinum, 1100W Platinum, 750W Titanium, 450W · redundant · hot-swap |
| Management | XCC · XCC Standard |
| Cooling | ASHRAE A4 · hot-swap fans |
| Dimensions | 438 × 176 × 660 mm · 36 kg |
Real parts from our catalog for this chassis, priced from live market listings and vendor offers:
Chassis prices are current refurbished cost plus margin; component prices come from live market listings and vendor offers and are refreshed nightly. Lines without market evidence are quoted by our team.
To regain access to the BIOS, consider rolling back the UEFI firmware to a previous version. Alternatively, you can create a bootable media using BoMC, boot from it, and select the option to load UEFI/BMC defaults to reset the password. For detailed instructions, refer to Lenovo's support documentation. [community thread]
To update the BIOS to the latest version in one go, use the BoMC tool and ensure you select the option to check for the latest individual updates from the Lenovo support website. If there are no dependencies, this should allow the update to complete in a single attempt. [community thread]
The Lenovo ThinkSystem ST550 does not provide standard SATA power leads from the power supply. Instead, you need to use the proprietary Tape & ODD power harness, specifically the 01KN091 or 03HC016 cables, to supply power to SATA drives. [community thread]
First, ensure that the CPU installed is compatible with the ST550 and is properly seated. If the issue persists, try reseating all components, including RAM and motherboard connections, and remove any unnecessary PCIe devices. Additionally, clearing the CMOS may help reset the BIOS settings and resolve the startup problem. [community thread]
Fan speed on the ST550 is automatically controlled by the XClarity Controller and may run at high RPM due to sensor issues or hardware conditions. To troubleshoot, ensure all components are properly seated, check the system health and logs in XCC for any faults, and consider performing a power cycle of the BMC. If the issue persists, collect the XCC event log and contact support for further assistance. [community thread]