Error-correcting code, as in a type of memory that can correct single-bit errors. ECC memory is typically found on servers and workstations, where maximum reliability is required.

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29
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6answers
11k views

How do I tell if my Memory is ECC or Non-ECC?

I need to replace the memory in my system and I'm not quite sure how to determine if the memory is ECC or Non-ECC. How do I determine this?
21
votes
4answers
3k views

Is there a certain or measurable advantage to using ECC RAM in a desktop PC?

I fuss a lot over building stable machines -- in that I absolutely hate crashes, reboots, funny behaviour, etc. -- and so error-correcting a.k.a. ECC RAM would seem to solve a big problem: memory ...
9
votes
1answer
975 views

Is ECC mandatory in SSD technology?

While shopping for an SSD I have noticed that some manufacturers promote their "Pro" models as the ones sporting ECC data protection. Those manufacturers do not mention ECC in their budget models ...
7
votes
3answers
25k views

Can I use non-ECC memory in a machine that already has some DDR2 ECC memory?

I have a developer workstation that has registered DDR2 ECC DIMMs already installed. I'm planning on getting some more RAM. Can I add memory modules that aren't ECC and/or registered? I mean, does the ...
7
votes
2answers
2k views

How can I use GnuPG with ECDSA keys?

I'd like to generate an ECDSA (rather than RSA, DSA, or ElGamal) key using GnuPG, and use it as I might otherwise use an OpenPGP-compatible master key. I've read that gpg2has support for ECDSA keys, ...
6
votes
2answers
12k views

ECC registered vs ECC unbuffered

I would like to build a storage server (based on GNU/Linux or FreeBSD) which will be on all the time. To prevent data corruption (which is unlikely to happen as I never had such a problem, but better ...
4
votes
1answer
3k views

Can registered ECC memory go into a desktop mother board?

Can registered ECC memory typically go into a desktop mother board? I don't really need ECC RAM, but the reason for asking is that I'm looking at a mother board that has 4 memory slots and supports ...
4
votes
0answers
390 views

get x and y components of ec public key using openssl

I am generating a KeyPair for ECC from curve 'secp128r1' using openssl Steps I followed : first I generated a private key using the command openssl ecparam -genkey -name secp128r1 -noout -out ...
3
votes
2answers
666 views

Why am I seeing Zero errors in non-ECC RAM? [closed]

According to sources, memory errors are a very probable event: Some say the probability of a DRAM error is 95% in just 3 days of operation of a computer with just 4 GB of RAM, others say 32% of ...
3
votes
2answers
287 views

How frequent are DRAM errors?

How frequent are DRAM errors? How significant a factor is heat? Is it worth investing in ECC RAM?
3
votes
3answers
2k views

Xeons with IMC (Integrated Memory Controller) — does ECC support depend on the chipset also?

Intel has released Ivy Bridge Xeon processors with PCIe 3.0, ECC, and VT-d support. However, there aren't yet any PCIe 3.0 + USB 3.0 C21x (Panther Point) boards available, while B75 and Z77 desktop ...
3
votes
1answer
1k views

Is PC2700 ECC backwards compatible with PC2100 ECC?

Because if it's not, it should be! I'm trying to get 2 x 1GB PC2700 ECC Registered DDR333 DIMMs (Micron brand) to work in my computer, but it won't POST: the computer starts, fans and hard drive spin ...
3
votes
2answers
4k views

Can I use Unbuffered ECC memory with a non-ECC CPU?

I recently purchased the Supermicro X9SCL-F with a Core i5-3350P. I realize that the 3350P does not support ECC, and the motherboard requires unbuffered ECC memory. I do not need ECC. Will unbuffered ...
3
votes
1answer
3k views

Elliptic curve crypto: Using same ECC parameters results in different keys in each pass. Why?

I've been using OpenSSL as the library of choice. I created ONE set of ECC parameters via openssl ecparam -out ecparams.pem -name secp521r1 -genkey I then created two certificate requests, with ...
2
votes
2answers
168 views

Can I buy an ECC SDRAM, or do I have to buy non-ECC SDRAM?

I'm helping a relative of mine with computer maintenance. She has a Compaq Presario 5000 (10yrs old) and it's slow. My first thing was to look at the memory -- it has only 512MB, but its maximum ...
2
votes
3answers
873 views

Is there a benefit to having NAS with ECC memory and ZFS filesystem when I work on systems with neither?

Recently I've read some alarming stats on corruption rates in systems with non-ECC RAM and typical filesystems. From what I can Google, having a system with ECC RAM running ZFS is probably the best ...
2
votes
1answer
642 views

Is server memory worth the extra cost for desktops? [duplicate]

Possible Duplicate: Should I use ECC RAM for the next computer I build? From what I understand, server memory contains extra integrity checks which rasies the cost (and stability) of the ...
2
votes
1answer
396 views

Does software (similar to DVDisaster) exist which can create images and parity at the same time?

DVDisaster is an awesome tool for archiving things reliably, as it creates ECC in case of physical damage to the media. However, when using it for backup purposes it can be a bit awkward -- one must ...
1
vote
4answers
237 views

Server Hardware on the Desktop

When I rebuild my desktop, I'm thinking of using server hardware instead of desktop hardware. I want to do this so I can easily add a lot of ECC memory (~20GB), and possibly more than one processor. ...
1
vote
2answers
364 views

ECC RAM in GA-G33M-DS2R? Or any Gigabyte/G33M motherboard?

I'm looking to retire a server which has 12GB of ECC DDR2 RAM. I'd like to upgrade my multi-purpose machine (firewall, file server, VM host for Windows Home Server, etc.) using the RAM from the ...
1
vote
2answers
455 views

ECC RAM for server(s)

I have a few (mini)servers (1xAMD E-350 & 1xIntel i5-2500k) running 24/7 that don't support ECC RAM. However I will store data mostly on dedicated servers with AMD AM3(+) CPUs which support ECC ...
1
vote
2answers
975 views

Server works with either ECC or non-ECC ram but not both (manual requires unbuffered)?

I have a server that came with two sticks of 2GB PC2-6400 ECC ram (Hyundai). We also bought two sticks of Corsair CM2x2048-6400C5C (PC2-6400). So I installed all 4 sticks and the machine started ...
1
vote
2answers
726 views

How to force a server to use a specific elliptic curve at the beginning of the handshake via openssl?

Is there a possibility or command in openssl to force a server to use a specific elliptic curve that I am requesting with a certificate or key? Can I "ask" the process the curves it is able to use?
1
vote
1answer
612 views

ECC errors, no Mem Test Errors

I recently purchased an HP XW6400 workstation (Dual CPU, Quad memory channels) Along with the computer I purchased 2 sticks of RAM that are the same brand and look, but not matching (numbers and ...
1
vote
1answer
3k views

Upgrading memory on the mac - how to solve problems that may arise

The info I could find from Apple about this, helps nothing and Apple Brazil doesn't sell memory (despite being at least 3x more expensive than regular Apple) so I don't know how to buy official ...
1
vote
3answers
77 views

How do desktop, laptop and handheld personal computers deal with ocasional RAM data corruption?

It is not a secret that spontaneous stored data corruption (like a bit flip) is not a frequent but still pretty possible event in normal SDRAM (including DDR 1/2/3/4 SDRAM) operation. Servers and ...
1
vote
1answer
969 views

ECC ram in non-ECC motherboard

We want to create a computer with i7-2600k (Z68 chipset) and 32 GB ram. After some googling we found out that this can only be done with 4x8GB modules. We can choose from: Samsung nonECC A-DATA ...
0
votes
1answer
493 views

ECC ram memory in MSI X99S

I bought motherboard MSI X99S Krait Edition and I found 1x16 GB RAM DDR4 with ECC. Can I run motherboard with this RAM? I don't know if it supports ECC. Where I can find? Can I use ECC memory on ...
0
votes
1answer
47 views

RAM for Lenovo Thinkserver TS 440

I am setting up a new Lenovo Thinkserver TS440 in my home as a workstation and as a test server. Here is the system I purchased: ...
0
votes
1answer
50 views

Fully-Buffered RAM on a SuperMicro board?

My home server has a SuperMicro X7SBi board. Currently, I have 4GB ECC RAM (4x 1GB) installed. According to the spec page on SuperMicro's site, the board takes unbuffered RAM. A friend has a large ...
0
votes
1answer
2k views

Difference between regular RAM and ECC RAM [duplicate]

Possible Duplicate: Should I use ECC RAM for the next computer I build? How often does regular RAM make a mistake? Generally speaking, what are the odds of it actually impacting anything ...
0
votes
0answers
14 views

How is it possible that WinRar can repair any volume with any single one of .rev files?

There is already a similar question(and 2 solid answers), but mine is a little bit different. Suppose you create a 5-volume archive + 3 recovery volumes(.rev files). This is supposed to reconstruct ...
0
votes
1answer
22 views

Can someone advise on DL380 G5 RAM, what is the difference between these DIMMs?

I have 3x DL380 G5 servers that were second hand retired ones. One of the servers, I populated with 4x 4GB DIMMs, and 4x 1GB DIMMs. Everything was working away merrily, and I decided to purchase some ...
0
votes
0answers
100 views

What is more likely? storage bit rot (e.g.URE) or ram memory bit rot?

The background to the question is that on most computersystems data can corrupted at several places. The questions asks about the relative problems connceted with two places of such ...
0
votes
0answers
32 views

How to find out reason for mce and nmi faults?

I have a server on Supermicro SuperServer 6016T-6F. 2xIntel Xeon e5520 Ubuntu 14.04.2 LTS (GNU/Linux 3.13.0-49-generic x86_64) Last time errors ocurred intermittantly - server hangs. Memetest86 is ...
0
votes
0answers
319 views

L3 data cache ECC error

I happened to have a terminal window open in Linux (Debian) and, as I was browsing the web, I heard a beep so I looked to see what happened and I found the following message in the terminal window: ...
0
votes
1answer
504 views

Specific board/module ECC Ram compatibility

I purchased a bunch of hardware for two different file servers. Previously I had never bought any server equipment, and therefore had not known that motherboards accept only certain types of ECC Ram. ...
0
votes
0answers
37 views

Theoretical behaviour of RAM if single read/write error

The topic is not a broken RAM. A good RAM can also have occasionally errors when reading/writing; non-ECC RAMs more than ECC RAMs, but errors are possible with both types. My question is, when ...
0
votes
0answers
731 views

ECC on harddisks

I have completely re-written my post here as I noticed I was a bit unclear before. In an older post the user sawdust explained very well that there is an SRAM buffer on the HDD controller which uses ...
0
votes
2answers
1k views

ECC memory on 2nd Gen Intel i3

I'm in the process of collecting components for a NAS build. I've gone with an UNAS NSC-800 case and an Intel Server Board 1200KPR. I have an i3-2130 thats lying around that Id love to use instead of ...
0
votes
1answer
654 views

How to select right ram module for MB Asrock Wolfdale 1333-D667

Detailed Here is my system specs. (For motherboard details, click here) I want to upgrade my systems memory. As you see on item specs page, this mainboard supports non-ECC, un-buffered memory. ...
-1
votes
1answer
462 views

GA-H170N-WIFI motherboard compatible memory

I bought GA-H170N-WIFI and since it can handle 32GB of DDR4 I want to buy two 16GB modules but can't find them. I found some cheap 16GB modules selling at my location but they are marked Buffered (or ...