Dell R720 Specifications download pdf (Page 24)

24 PowerEdge R720 and R720xd Technical Guide

5 Memory

More memory options are available than ever before with the Dell PowerEdge R720 and R720xd—

greater capacities, higher frequencies, and more flexibility. The R720 and R720xd support up to

768GB of memory (24 DIMMs) and speeds up to 1866MT/s, providing high performance in a variety

of applications. High memory density means there is no compromise when it comes to virtualization.

Increase your uptime and reduce data loss due to Dell’s focus on reliability, availability, and

serviceability (RAS) features. RAS aids in the rapid and accurate diagnosis of faults which require

service, increasing your memory reliability. System uptime is reinforced with RAS features like

memory mirroring, sparing, and many others.

In addition to supporting existing unbuffered DIMMs (UDIMMs) and registered DIMMs (RDIMMs), the

R720 and R720xd support load reduced DIMMs (LRDIMMs), which use a buffer to reduce memory

loading and provide greater density, allowing for the maximum platform memory capacity.

Supported memory

Table 7 lists the memory technologies supported by the R720 and R720xd.

Table 7. Memory technologies supported

Feature

UDIMM

RDIMM

LRDIMM

Yes

Buffer

Yes

Frequencies*

1600MT/s

1333, 1600 or 1866MT/s

1600 or 1866MT/s

Ranks supported

1, 2 or 4

Capacity per DIMM

4GB

4, 8, 16 or 32GB

32GB

Maximum DIMMs per

channel

DRAM technology

x4 or x8

Temperature sensor

Yes

Error Correction Code

(ECC)

Yes

Single Device Disable

Code (SDDC)

Yes (with advanced

ECC mode)

Yes

Address parity

Yes

*Although the R720 and R720xd support DIMM speeds lower than 1600MT/s, you can only purchase these systems

with DIMM speeds of 1600MT/s and 1866MT/s on Dell.com/PowerEdge.

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