NOTE: 64 GB LRDIMMs, 128 GB LRDIMMs must not be mixed.
NOTE: Minimum of two CPUs are required for any configurations that support NVDIMM-N.
NOTE: DCPMM can be mixed with RDIMMs and LRDIMMs.
NOTE: Mixing of DDR4 DIMM Types (RDIMM, LRDIMM), within channel, integrated memory controller, socket, or
across sockets is not supported.
NOTE: x4 and X8 DDR4 DIMM can be mixed within channel.
NOTE: Mix of Intel Data center persistent memory module operating modes (App Direct, Memory Mode) is not
supported within socket or across sockets.
NOTE: Memory DIMM slots are not hot pluggable.
Storage controller specifications
The PowerEdge R740xd system supports:
• Internal storage controller cards: PowerEdge RAID Controller (PERC) H330, PERC H730P, PERC H740P, HBA330, S140, and Boot
Optimized Server Storage (BOSS-S1).
The BOSS card is a simple RAID solution card designed specifically for booting a server's operating system. The card supports up to
two 6 Gbps M.2 SATA drives. The BOSS adapter card has a x8 connector using PCIe gen 2.0 x2 lanes, available only in the low-profile
and half-height form factor.
• External storage controller cards: PERC H840 and 12Gbps SAS HBA.
NOTE: Mini-PERC socket is not hot pluggable.
Drive specifications
Drives
The PowerEdge R740XD system supports SAS, SATA, Nearline SAS hard drives/SSDs, or NVMe drives.
Table 23. Supported drive options for the PowerEdge R740XD system
Configuration Description
12 drives system Up to 12 3.5 inch (SAS, SATA or Nearline SAS) front accessible drives in slots 0 to 11
14 drives system Up to 12 3.5 inch (SAS, SATA or Nearline SAS) front accessible drives in slots 0 to 11 and
up to two 3.5 inch (SAS, SATA or Nearline SAS) rear accessible drives in slots 12 to 13
16 drives system Up to 12 3.5 inch (SAS, SATA or Nearline SAS) front accessible drives in slots 0 to 11 and
up to four 2.5 inch (SAS, SATA or Nearline SAS) rear accessible drives in slots 12 to 15
18 drives system Up to 12 3.5 inch (SAS, SATA or Nearline SAS) front accessible drives in slots 0 to 11, up
to four 3.5 inch (SAS, SATA or Nearline SAS) mid drives in slots 14 to 17, and up to two
3.5 inch (SAS, SATA or Nearline SAS) rear accessible drives in slots 12 to 13
20 drives system Up to 12 3.5 inch (SAS, SATA or Nearline SAS) front accessible drives in slots 0 to 11, up
to four 3.5 inch (SAS, SATA or Nearline SAS) mid drives in slots 16 to 19, and up to four
2.5 inch (SAS, SATA or Nearline SAS) rear accessible drives in slots 12 to 15
24 drives system Up to 24 2.5 inch (SAS, SSD or NVMe) front accessible drives in slots 0 to 23
24 drives system Up to 12 2.5 inch (SAS, SSD) front accessible drives in slots 0 to 11 and up to 12 2.5 inch
NVMe drives in 12 universal slots 12 to 23
24 drives system Up to 24 2.5 inch NVMe drives in bay 1 (slots 0 to 11) and bay 2 (slots 0 to 11)
Technical specifications 33
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