Memory Ras Features; Table 11. Memory Populations And Operating Frequencies; Table 12. Memory Ras Features - Dell PowerEdge R730 Technical Manual

Table 11.
DIMM populated per
DIMM type
channel
1
RDIMM 2
3
1
LRDIMM 2
3
For more information on memory configuration and population, see the
R730xd Owner's Manual

Memory RAS features

Reliability, availability, and serviceability (RAS) features help keep the system online and operational
without significant impact to performance, and can decrease data loss and crashing due to errors.
RAS aids in rapid, accurate diagnosis of faults which require service. Table 12 describes the memory
RAS features supported on the R730 and R730xd.
Feature
Dense configuration
optimized profile
Memory demand and
patrol scrubbing
Recovery from single
DRAM device failure
Failed DIMM isolation
Memory mirroring:
intra-socket
Memory address parity
protection
PowerEdge R730 and R730xd Technical Guide
26
Memory populations and operating frequencies
Operating frequency (MT/s)
2133, 1866,1600, 1333
1866, 1600, 1333
2133, 1866, 1600, 1333
1866, 1600, 1333
on Dell.com/Support/Manuals.
Table 12. Memory RAS features
Description
Increased memory reliability can be a result from this selectable platform profile
that adjusts parameters to reduce faults regarding refresh rates, speed,
temperature and voltage
Demand scrubbing is the ability to write corrected data back to the memory once
a correctable error is detected on a read transaction. Patrol scrubbing proactively
searches the system memory, repairing correctable errors.
Recovery from Single DRAM Device Failure (SDDC) provides error checking and
correction that protects against any single memory chip failure as well as multi-bit
errors from any portion of a single memory chip.
This feature provides the ability to identify a specific failing DIMM channel pair,
thereby enabling the user to replace only the failed DIMM pair.
Memory mirroring is a method of keeping a duplicate (secondary or mirrored)
copy of the contents of memory as a redundant backup for use if the primary
memory fails. The mirrored copy of the memory is stored in memory of the same
processor socket.
This feature provides the ability to detect transient errors on the address lines of
the DDR channel.
Maximum DIMM ranks per
channel
Dual rank or single rank
Quad rank
Dell PowerEdge R730 and