Dell H810 Specifikace stáhnout pdf (Strana 23)

23 PowerEdge R720 and R720xd Technical Guide

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 1600MT/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.

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

Feature

UDIMM

RDIMM

LRDIMM

Yes

Buffer

Yes

Frequencies*

800, 1066, or

1333MT/s

800, 1066, 1333, or

1600MT/s

1066 or 1333MT/s

Ranks supported

1 or 2

1, 2, or 4

Capacity per DIMM

2 or 4GB

2, 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 of 800MT/s and 1066MT/s, you can only purchase these

systems with DIMM speeds of 1333MT/s and 1600MT/s on Dell.com.

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