Memory Ras Features - Dell PowerEdge M620 Technical Manual

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DIMM
DIMM 0
type
SR
DR
UDIMM
SR
SR
DR
SR
DR
QR
SR
SR
DR
RDIMM
QR
QR
QR
SR
SR
SR
DR
QR
QR
QR
*Although the M620 supports DIMM speeds of 800MT/s and 1066MT/s, you can only purchase this system with DIMM
speeds of 1333MT/s and 1600MT/s on Dell.com.
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 9 describes the memory
RAS features supported on the M620.
Feature
Dense configuration
optimized profile
Memory demand and
patrol scrubbing
Number
DIMM 1
DIMM 2
SR
DR
DR
SR
DR
DR
SR
DR
QR
SR
SR
SR
DR
DR
DR
DR
DR
QR
QR
QR
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.
of
800*
1066*
DIMMs
1
1
2
2
2
1
1
1
2
2
2
2
2
2
3
3
3
3
1
2
3
Speed (MT/s)
1333
1600

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