Error Correcting Code (ECC memory) is used in most computers where data corruption cannot be tolerated under any circumstances.
Questions tagged [ecc]
81 questions
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Is ECC memory recommended for memcache?
I'm planning to buy new server for memcache/couchbase.
Would you recommend using ECC memory for a memcache server, why/why not?

wlk
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What and how to check when determining if a memory stick will be compatible with a particular server?
We recently needed to add more RAM to our vCenter Server (Dell PowerEdge 860 server). We checked from the Kingston memory search what kind of memory the server accepted.
Then we found a listing of 4x 2GB DDR2-667 PC2-5300 ECC Registered Memory HP…

Henno
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can ecc and registered ram be used together
do you know if it is possible to use both ECC and Registered DDR2 SDRAM in a server?
We have a mix of both, but when they are all installed, the server fails to boot.

James Edmonds
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Why won't this RAM work in my HP Proliant DL380 G4 server?
I tried installing some Crucial 1024MB PC5400 DDR2 667MHz ECC Memory (CT12872AA667) and the system would not start - just post beeps.
The original memory is PC2-3200R ECC and the place I purchased the new RAM from does not have anything that low in…

Scott Szretter
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Dell PowerEdge - Advanced ECC vs Optimized for 8GB RAM
We are buying new Dell R410 servers, and I'm trying to figure out the best RAM performance we can get.
Dell offers the following choices:
8GB Memory (8x1GB), 1333MHz Single Ranked UDIMMs for 2 Processors, Optimized
8GB Memory (4x2GB), 1333MHz Single…

SyRenity
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Can ECC Chipkill be used in non-IBM servers?
Can IBM specific ram, such as 41Y2770 with ECC Chipkill, be used in non-IBM servers?
John Davies
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How to test RAM if memtest86 freezes?
I suspect some faulty RAM and wanted to test it with Memtest86. I'm using a bootable Ubuntu 20.04 USB stick and choose the "Memtest" option from the boot menu.
Unfortunately the test freezes after 5-6 sec.
I've tried this on 2 different systems and…

Wouter
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Do modern NVMes correct and reallocate bad data at the hardware level?
I'm planning on getting an NVMe for use to contain a swapfile to extend the RAM of my Linux system. Yes, I know this is a bad choice due to the finite number of writes an NVMe has in its lifetime, but bear with me.
I'm wondering if an NVMe with ECC…

Steve Mucci
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CL latency of unbuffered and registered RAM
So AFAIK, registered ram generally has a bit higher latency as going through the registers adds (usually one?) cycle.
If I have two dimms of ecc ram, one registered and one unbuffered, and both say in their specs for example CL19, is that added…

matthias_buehlmann
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ECC Registered Ram: Mixing Identical Kits
So I know that identical RAM from different sets / kits may cause system instability. I'm talking about RAM with identical brand & serial numbers but with a different batch number (usually a 4 digit number).
I've had first hand experience with this…

AlexVPerl
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Does Xeon Harpertown (E5400 series) support ECC DDR3?
Is it possible to use Xeon E5450 with 8GB (preferably 16GB) DIMMs of DDR3 Registered Buffered ECC RAM?
I checked Intel's Spec page for Xeon E5450
and Wikipedia
Xeon#Harpertown
Harpertown spec table
Information paragraph
None explicitly mention ECC…

Josh
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How to validation ECC DDR memory controller periodic control scrub?
Using ARM not x86, how do I validated DDR periodic patrol scrubs? The controller is enabled per the hardware spec, nothing in the hardware spec on how to validate periodic patrol scrub for the controller, no registers available to validate, and not…

T. Smith
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Does ECC RAM help in a home-use NAS?
Do i need to use ECC RAM if i'm only going to use a 100TB Server for video file storing, organizing and copying files on and off of it ?
The build will be Asrock X370 Taichi + Ryzen 3 + Windows 10 Storage Spaces

doc
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Where to find report about ECC DDR single bit failure rates on Windows?
We have a windows server 2012 with ECC DDR3 installed. Recently the Dell admin software that came with it started reporting single-bit correction warnings on one of the modules:
My question is, is there any equivalent information recorded in…

crokusek
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R610 Mixed Memory configuration
The configuration for this question is as follows:
We have two dell R10 servers.
Each R610 is has 2 X E5504 cpus, (The E5504 is 4 core X 2.0 GHz).
I ordered 12 sticks of 8GB ECC DDR3 ram (Hynix HMT31GR7BFR4C).
I had 12 sticks of 2GB ECC DDR3 ram…

sysjas
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