Intel® Server System R2000WF Product Family Technical Product Specification
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Figure 71. Backplane cabling from two PCIe sources
When cabling the backplane from two different PCIe sources, no other drive set combinations beyond those
defined above are supported.
Drive population rules will differ depending on the source of the PCIe interface to the backplane. In addition,
specific drive population limits exist when populating a backplane with both NVMe and SAS drive types.
The following sections define the drive population rules associated with each of the available PCIe sources to
the backplane.
NOTE: When connecting the backplane to two different PCIe sources, the defined population rules for each
PCIe source are applied to the drive set connected to it
7.4.4.1
Onboard PCIe OCuLink Connectors and / or Intel Tri-mode RAID module to 8 x 2.5” Combo
Backplane
The following information is applicable when PCIe signal to the 8x2.5” combo backplane are cabled from the
PCIe OCuLink connectors located on the server board and/or an optionally installed Intel® Tri-mode RAID
Module.
OCuLink connectors on the server board are considered a single PCIe source to the backplane, and
therefore can only be connected in defined drive sets
0-3 or 4-7
NVMe drive management sideband signals on the backplane are routed between drive connector pairs:
(0,1) (2,3) (4,5)
and
(6,7)
PCIe Source #1
PCIe Source #2
PCIe Source #1
PCIe Source #2
Front Drive Connectors
Back OCuLink Cable Connectors
