Owners Manual

Expansion bus specifications
The Dell DSS 2500 system supports PCI express (PCIe) generation 3 expansion cards, which can be installed on the system
board directly or by using expansion card risers. The following tables provide detailed information about the expansion bus
specifications:
Table 12. Expansion slots (with optional expansion card risers) specifications
Expansion slots (with
optional expansion
card risers)
PCIe slots on the
riser
Height Length Link
Dual riser module Slot 1 Full height Full Length x16
Slot 2 Low Profile Half Length x8
Slot 3 Low Profile Half Length x8
Slot 4 Low Profile Half Length x8
Internal PERC riser Slot 5 Low Profile Half Length x8
Table 13. Expansion slots (without optional expansion card risers) specifications
Expansion slots
(without optional
expansion card
risers)
PCIe slots on the
system board
Height Length Link
PCIe slots Slot 1 Low Profile Half Length x16
Slot 2 Low Profile Half Length x16
Slot 3 Low Profile Half Length x4
Memory specifications
The DSS 2500 system supports DDR4 registered DIMMs (RDIMMs) at 1866 MT/s, 2133 MT/s, or 2400 MT/s.
Table 14. Memory specifications
Memory module sockets Memory capacity Minimum RAM Maximum RAM
sixteen 288-pins
8 GB and 16 GB (RDIMMs) ● 8 GB with single processor
● 16 GB with dual
processors (minimum one
memory module per
processor)
● Up to 256 GB with single
processor
● Up to 512 GB with dual
processors
Drive specifications
The DSS 2500 system supports:
● Up to twelve 3.5 inch or 2.5 inch (with 3.5 inch drive carrier adapters), hot-swappable SAS, SATA, or Nearline SAS hard
drives
● Up to twelve 3.5 inch or 2.5 inch (with hybrid drive carriers), hot-swappable SATA SSDs
● Up to two 2.5 inch, internal cabled SATA hard drives
NOTE:
These internal drives are used only for the operating system. They will not be controlled by the RAID controller.
These hard drives are controlled by the PCH chipset.
Ports and connectors specifications
Technical specifications
19