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Questions tagged [ecc]

Error Correcting Code (ECC memory) is used in most computers where data corruption cannot be tolerated under any circumstances.

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dmidecode weird total/data width

I am getting strange outputs from my workstation, which has ECC RAM. Supposedly, from what I read, the data width should be at 64 bits and the total width at 72. But... data width shows as 64 and total width as 128. Is this a problem with my…
EduAlm
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Using DDR4 SDRAM in a Supermicro X10SRL-F Mobo that wants DDR4 ECC SDRAM?

Hey so I got my hands on a Supermicro X10SRL-F motherboard, and bought myself a Xeon off ebay, but I neglected to get any ram, (money reasons). I figured however, that I might be able to pick something up from my local Fry's, but they don't seem to…
oh_hello
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Skimp on CPU or skimp on RAM?

I'm upgrading to a dedicated server, and I've decided between two servers, but I don't know which to choose. The differences between the two configurations are: Server 1: Intel Xeon W3520(4 cores/ 8 threads), 2.66 GHz+, 32 GB ECC RAM, 2 X 2TB…
ashraj98
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Why is the use of ZFS without ECC RAM "not recommended"?

I've been reading up on FreeNAS and RAID Z, and one of the things people kept mentioning is that you shouldn't use ZFS (or more specifically, RAID Z) on a machine without ECC RAM. I'm wondering what the reasoning behind this is. Is this an issue…
Ajedi32
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Is there such a thing as unbuffered registered DIMM memory?

I thought the two (registered and buffered, and the same for the negations) are synonymous. Are there any ECC unbuffered but registered modules out there?
Dan
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How I know if I have ECC RAM or not installed?

I have rent a server with: 8 GB DDR3-RAM ECC On startup the log files print something like this: EDAC amd64: This node reports that Memory ECC is currently disabled, set F3x44[22] (0000:00:18.3). Jan 15 03:24:44 big kernel: [ 75.821734] EDAC…
Daniel W.
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how to know if server failed due to a memory error

I recently read this paper that @codinghorror twitted about, and I wonder how do I know that my server failed due to a memory error? Particularly, how do I know if it was a correctable or an uncorrectable error and on which DIMM it happened?
Andriy Volkov
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Turn ECC off in HP Proliant ML350 G4

I have got an HP Proliant ML350 generation 4. I want to upgrade the memory but I only have non-ECC memory. How can i disable ECC in the bios settings to let the non-ECC ram work?
user1079160
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My HP ProLiant DL380G7 give Correctable ECC logging reached?

I have a HP Pro Liant DL380G7 and a VMWare ESXi installed on it. In configuration tab of vSphere client inventory Memory Status is Warning with this message "System Board 8 Memory: Correctable ECC logging limit reached - Assert". Is it serious? How…
ir01
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Uncorrected DRAM ECC error

I am using SuperMicro server, AMI BIOS, Kingston ECC 8g registered RAM and Intel X5690. After booted up, BMC responding: Un-Correctable DRAM ECC Error Detected at CPU01/Channel01/DIMM0A Press F1 to resume --- ipmitools ---- 2 | 06/24/2011 |…
peter chan
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fb-dimm without ecc

Is it possible for FB-DIMM memory to be a memory without ECC, or every FBDIMM memory module is ECC? ECC - is builtin memory errors correction. FB-DIMM - is type of server memory.
osgx
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Which motherboards support ECC RAM and USB 3.0?

I'm gathering specs to build a highly reliable file server, somewhat future proof for the next 3-5 years. The component I'm starting with is the motherboard. Are there motherboards that have been shown to support ECC RAM (and which particular…
Dan Dascalescu
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MCE Errors but no edac-util errors?

I have an older HP Z440 tower with 4x8GB ECC DDR4, running Proxmox VE 6.4. Recently, it started showing MCE errors every few seconds. I installed rasdaemon and can see that they are memory read errors. However, edac-util doesn't show any sign of…
Dustin Lewis
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ECC DDR5: EC8 (80-bit) vs EC4 (72-bit) data integrity capabilities?

I have been looking info about ECC on DDR5 DIMMs (full ECC, non on-die ECC) and I have seen that there are two different types: EC4, which uses 4 ECC bits per subchannel, for a total of 72 bits width EC8, which uses 8 ECC bits per subchannel, for a…
Héctor
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Memory errors in dmesg, do I need to replace a DIMM?

The following errors show up in dmesg 10-20 times per day: MCA: Bank 5, Status 0x8c00004000010092 MCA: Global Cap 0x0000000001000c10, Status 0x0000000000000000 MCA: Vendor "GenuineIntel", ID 0x206d7, APIC ID 0 MCA: CPU 0 COR (1) RD channel 2 memory…
Mikhail T.
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