Lenovo ThinkSystem SR850 - Page 10

Table 1. Specifications, Type 7X18 and 7X19 (continued)
Processor (depending on
model)
Supports multi-core Intel Xeon processors, with integrated memory controller and Intel
Ultra Path Interconnect (UPI) architecture.
• Two processor sockets (expandable up to four) with minimal requirement of two
installed.
• Designed for LGA 3647 sockets
• Scalable up to 28 cores
• Supports Intel Extended Memory 32/64 Technology (EM32/64T)
Memory
• Minimum: 16 GB
• Maximum:
– RDIMM: 1.5 TB
– LRDIMM: 3 TB
– 3DS-RDIMM: 6 TB
• DIMM types:
– PC4-21300 (single-rank, dual-rank), 2666 MT/s, error correcting code (ECC),
double-data-rate 4 (DDR4) registered DIMM (RDIMM)
– PC4-21300 (quad-rank), 2666 MT/s, error correcting code (ECC), double-data-rate
4 (DDR4) load reduced DIMM (LRDIMM)
– PC4-21300 (octa-rank), 2666 MT/s, error correcting code (ECC), double-data-rate
4 (DDR4) three-dimensional stacking registered DIMM (3DS-RDIMM)
• Slots: 24/48 DIMM slots, two-way interleaved
Drive expansion
Sixteen 2.5-inch drive bays:
• Eight 2.5-inch hot-swap SATA/SAS drive bays (bay 0-3, 8-11)
• Eight 2.5-inch hot-swap SATA/SAS/NVMe drive bays (bay 4-7, 12-15)
Expansion slots Eleven expansion slots:
• Slot 1: PCI Express 3.0 x16 (supports PCIe switch card)
• Slot 2: PCI Express 3.0 x8 (supports RAID adapters for SATA/SAS drives)
• Slot 3 - 5: PCI Express 3.0 for PCIe riser-card with the following slots available
depending on the riser-card installed:
– x8/x8/x8 PCIe full-height riser assembly provides:
– Slot 3: PCI Express 3.0 x8
– Slot 4: PCI Express 3.0 x8
– Slot 5: PCI Express 3.0 x8
– x8/x8/x8ML2 PCIe full-height riser assembly provides:
– Slot 3: PCI Express 3.0 x8
– Slot 4: PCI Express 3.0 x8
– Slot 5: Customized slot for x16 ML2 adapter
– x8/x16ML PCIe full-height riser assembly provides:
– Slot 3: PCI Express 3.0 x8
– Slot 4: Not available
– Slot 5: Customized slot for ML2 adapter
• Slot 6: Customized slot for dual M.2 backplane that supports M.2 drives in three
different physical sizes:
– 42 mm (2242)
– 60 mm (2242)
– 80 mm (2242)
• Slot 7: Customized slot for LOM adapter
• Slot 8: PCI Express 3.0 x8
• Slot 9: PCI Express 3.0 x8
• Slot 10: PCI Express 3.0 x8 (supports RAID adapters for SATA/SAS drives)
• Slot 11: PCI Express 3.0 x16 (supports PCIe switch card)
2 ThinkSystem SR850 Maintenance Manual