PCIe
DIY 3node Server Guide (Dell R620-720)
4 Likes
Hello, everyone,
I have one more question, my friend gets this error message and what is the problem with the CPU or main memory?
1 Like
Looks like an error coming from RAM Banks (or connection to the RAM) 7 and 11 of CPU 1.
I would first check the RAM, rotate it to another bank and see if the error the appears on the other bank.
Or remove the RAM above bank 6 and see how the system behaves then.
What system is it? Dell servers have different RAM options to choose in the BIOS. Choose something below “performance mode”.
Do you have different RAM installed?
A weak power supply also can cause weird hardware errors.
Overheating also…
2 Likes
We are four friends who are new to Threefold in general, have been in HNT, MXC, PLANETS Mining for a year now, and we all have the same 10x DELL servers PowerEdge R620, 2x E5-2670 V2, 320GB DDR3, Dell PERC H310 Mini Mono 6Gb/s SAS RAID Controller), the difference between me and my friends is that they all installed SSD, and I installed everything on M.2 but the game here does not matter, and back on topic, bought in bulk for more Get a discount, with a one year guarantee, all servers are refurbished by the seller.
He has now upgraded the RAM and now the system has been running for an hour with no problems, I also passed your advice to him to switch it to a different bank and see if the error occurs on the other bank.
Or remove the RAM via bank 6 and see how the system behaves then.
And what exactly do we have to consider now with RAM options in the BIOS? That the system, such as with Windows or NVIDIA, under performance mode, installed on safe electricity and under no circumstances energy-saving mode? So in general, set maximum performance for the RAMS in the BIOS?
And we have meters on the outlets and we’re very careful about the heat build-up on the servers, and the level is between 18-27°F°C per server, and the power draw varies between 94-144 WATTS. And are these normal values?
And I have another question about the node itself, how do I save it to an external USB stick? How can I read or access the data?
Seems like on of the RAM modules was broken. Just wanted to complete it with the gift for temp or other "environmental circumstances ".
I got pretty much the same config. Bought it on Piospart?
And what exactly do we have to consider now with RAM options in the BIOS? That the system, such as with Windows or NVIDIA, under performance mode, installed on safe electricity and under no circumstances energy-saving mode? So in general, set maximum performance for the RAMS in the BIOS?
As you know… we have 6x DELL R620 running. We didn’t adjust any RAM settings in BIOS. This should be done automatically unless anyone has done some weird settings manually.
And we have meters on the outlets and we’re very careful about the heat build-up on the servers, and the level is between 18-27°F°C per server, and the power draw varies between 94-144 WATTS. And are these normal values?
That’s pretty normal. power consumption is about +/- 100 Watt in idle. Temperatures inside (according to iDRAC) between 23-34 °C.
And I have another question about the node itself, how do I save it to an external USB stick? How can I read or access the data?
Take a look her: Farming FAQ Zero-OS v3 -> “Is there a way to backup my node ID in order to restore a 3node if the disk with the node ID gets corrupted or breaks down?”
1 Like
Bought it on Piospart?
Jep! 
but wait… “upgraded the RAM”?? The maschines came with 320GB allready installed. Is this one of “our” servers?
How are you Dany? And I’m the guy with the glasses (Andrej), the very thin and small guy, how cool is that that I meet you in the forum, I’ll update the whole BIOS in the coming days, and all the hard drives with the, Samsung Magician when the data leak is over and then I will also connect to the iDRAC and thank you very much my friends for providing us the machines so cheaply and smoothly and we really adore yours fault, and I only ask one thing, please give me your cell phone number so that I can contact you directly, because Maik is currently very overwhelmed with everything, he also has a child and a wife, and first has to take care of his company , and I’m the one who manages everything for us and takes care of everything for you, and keeps track of everything, and I ask you very much to order machines for us again, because we still need 5-10 of them, and it’s done really very simple everything like you it you also explained everything perfectly, and I thank you very much for that, and please write me a PM
Hi all, i am now looking at purchasing a Dell R720. It does come with plenty of memory but unfortunately no hard drives or caddies. I do have several Sata HDD 2.5 and 3.5 inch drives. Will these be compatible and do i need the caddies?
Thank you
Yes. Those drives are compatible. Only m.2 and u.2 are not natively compatible and need an adapter. The caveat is if it has 2.5" bays those 3.5" drives will not fit. There are adapter to put 2.5" drives in a 3.5" bay. Caddies are inexpensive. You should also reflash the raid controller to IT mode.
Thanks, I have found a spare SATA power and data cable inside so i presume i can simply connect these to one of my HDD until i obtain a caddy.
If you have no caddy to set it up, make sure it won’t move. HDD are sensitive to movement as they have moving parts in them.
OK set up and all seems good. Next question then is what speed of internet do i require to get the most from my new server. I believe it is running 24 threads with 256 GB of RAM.
Thank you
What is the bandwidth needed when it comes to running 3nodes on the Grid?
[This answer is temporary and serves solely as a general guideline. The community will soon have clearer and more official documentation.]
- A 3node Titan needs a minimum of 1mbps internet bandwidth.
- For many Titans (2 to 5) or a DIY 3node with up to 30 TB of storage/8 vcores/64GB ram, a high speed internet is sufficient. (Between 10 to 100 mbps).
- A connection of 1 gbps is necessary for farms with multiple high capacity 3nodes such as 16-or 32 vcores and 128 or 256 GB ram servers (from 1 to 20 servers) or multiple Titans (6 to 40).
NB: Notice the gray areas between the three propositions. This goes to show that precise numbers are not yet determined. Using those numbers as a guide will set you in the good direction.
1 Like
Thank you. I did see that in the FAQ but I wasn’t sure if that means I need a 1gb connection. I have around 100MB
Well for now it’s perfectly fine. Proof-of-cultivation will demand more bandwidth than proof-of-capacity.
But as it said in the text, the requirements are not official yet.
Perhaps the DAO will settle that 100 mbps bandwidth is OK for a server with 24 threads with 256 GB of RAM.
I’d say you’re fine with 100MB for now.
(Anyone correct me if you disagree!)
1 Like
That’s good news. Thank you.
What does flashing to IT mode do please. My server appears to be working correctly but I haven’t done this yet
If its working then probably don’t fret it. It bypasses raid.
2 Likes