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DIMM
DIMM rank
type
NA
NOTE:
8 GB RDIMMs and NVDIMM-N 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 DCPMM operating modes (App Direct, Memory Mode) is not supported within socket or across
sockets.
Storage controller specifications
The PowerEdge R640 system supports:
•
Internal storage controller cards: PowerEdge RAID Controller (PERC) H330, H730p, H740p, Software RAID (SWRAID) S140.
•
Boot Optimized Storage Subsystem: HWRAID 2 x M.2 SSDs 120GB, 240 GB.
•
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 PERC (RAID): H840
•
12Gbps SAS HBAs (non-RAID):
•
External- 12Gbps SAS HBA (non-RAID)
•
Internal- HBA330 (non-RAID)
Drives
Hard drive specifications
The PowerEdge R640 supports:
•
Up to ten 2.5 inch, hot swappable SAS, SATA, SAS/SATA SSD, or Nearline SAS hard drives with up to 2 x 2.5 inch hot swappable
SAS, SATA, SAS/SATA SSD, or Nearline SAS hard drives supported at the back of the system
•
Up to eight 2.5 inch, hot swappable SAS, SATA, SAS/SATA SSD, or Nearline SAS hard drives
•
Up to four 3.5 inch, hot swappable hard drives with up to 2 x 2.5 inch hot swappable SAS, SATA, SAS/SATA SSD, or Nearline SAS
hard drives supported at the back of the system
Optical drive
Certain configurations of the system support one optional SATA DVD-ROM drive or DVD+/-RW drive.
NOTE:
The optical drive is supported in both 4 x 3.5 and 8 x 2.5 inch hard drive systems.
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Technical specifications
Single processor
DIMM
capacity
Minimum RAM
NA
512 GB
NA
Maximum RAM
Minimum RAM
NA
RDIMM: 384 GB
NA
DCPMM: 4096 GB
Dual processors
Maximum RAM
RDIMM: 1536 GB
DCPMM: 6144 GB
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