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World Community Grid Forums
Category: Community
Forum: Hardware Chat Room
Thread: Servers VS Desktops |
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Thread Status: Active Total posts in this thread: 22
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
i was recently given a room full ( and I am NOT joking) of Dell 2950 lll's with dual Xeon quad cores running at 3.16ghz, 32gb of ecc ram, and 6 SAS 15.000rpm 146gb hard drives. I just hooked one of them up to BOINC, and wow, finally something besides prime95 that actually uses all 8 cores.
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7849 Status: Offline Project Badges: 
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i was recently given a room full ( and I am NOT joking) of Dell 2950 lll's with dual Xeon quad cores running at 3.16ghz, 32gb of ecc ram, and 6 SAS 15.000rpm 146gb hard drives. I just hooked one of them up to BOINC, and wow, finally something besides prime95 that actually uses all 8 cores. Wow. I have run a couple of the Dell 2950's, but with lower level Xeons. I am guessing you have X5460's in there. You may be able to save some electricity by just running one of the SAS drives. You will still have plenty of space with just one and the machine will run a bit cooler without all those HD's spinning. Also for WCG purposes, you will be able to get by with 8gb of memory. Mine had just 4gb of memory and never had a problem. Just how many of these can you put on line at the same time ? You could have quite a farm going. Cheers
Sgt. Joe
*Minnesota Crunchers* |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Sgt. Joe,
I am running these in my house, and so far have 2 2950's running 24/7, (barring power issues) one in my front/living room, another in the room I keep my HP 5550dtn printer in, and currently running a Dell 1950 III with slower dual quad core Xeon's in my bedroom ( the 1950 is very quiet), I had the 2 2950's in the front room, but with the other loads on that circuit,( window A/C unit) it tripped the 15 amp breaker, that is why I moved one of them. I am going to hook up another 2950 in the printer room later today to see if THAT circuit will handle 2 of them |
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7849 Status: Offline Project Badges:
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Be very careful about overloading circuits. You do not need to be damaging wiring or starting fires.
----------------------------------------Those 2950's will put out a substantial amount of heat, so you my want to position them to either make the most of the heat or to be able to vent them outside to not tax your air conditioner too much. I do have one server running just off of a flash drive (no hard drive) in order to keep the electric bill down a bit. Cheers
Sgt. Joe
*Minnesota Crunchers* |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Sgt. Joe, I am running these in my house, and so far have 2 2950's running 24/7, (barring power issues) one in my front/living room, another in the room I keep my HP 5550dtn printer in, and currently running a Dell 1950 III with slower dual quad core Xeon's in my bedroom ( the 1950 is very quiet), I had the 2 2950's in the front room, but with the other loads on that circuit,( window A/C unit) it tripped the 15 amp breaker, that is why I moved one of them. I am going to hook up another 2950 in the printer room later today to see if THAT circuit will handle 2 of them If running 24/7 you shouldn't exceed 80% of the circuit rating (12amps on a 15amp circuit). Your servers are probably pulling somewhere between 1.6 and 2.4 amps each with minimal disks plus whatever else is using the circuit. At a continuous 10.4amp pull my wall plate became discolored and the breaker in the panel felt warm all the time. It made me uncomfortable so I installed two new 20amp dedicated circuits with 20amp receptacles (most electricians will install 15amp receptacles on 20amp circuits if not commercial). I'm running 10 servers in a hobby room and they generate about 12,000 BTUs of heat and fans couldn't keep up. I broke down and installed an 18,000 BTU mini-split AC unit to cool the room. Keep an eye on your power strips and cords to make sure they are handling the continuous power draw. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks for the heads up. I will keep a close eye on the wall receptacles for any signs of discoloration.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
[ I am going to hook up another 2950 in the printer room later today to see if THAT circuit will handle 2 of them If running 24/7 you shouldn't exceed 80% of the circuit rating (12amps on a 15amp circuit). Your servers are probably pulling somewhere between 1.6 and 2.4 amps each with minimal disks plus whatever else is using the circuit. At a continuous 10.4amp pull my wall plate became discolored and the breaker in the panel felt warm all the time. It made me uncomfortable so I installed two new 20amp dedicated circuits with 20amp receptacles (most electricians will install 15amp receptacles on 20amp circuits if not commercial). I'm running 10 servers in a hobby room and they generate about 12,000 BTUs of heat and fans couldn't keep up. I broke down and installed an 18,000 BTU mini-split AC unit to cool the room. Keep an eye on your power strips and cords to make sure they are handling the continuous power draw. Doneske, thank-you for the tips, I just put the 2nd 2950 I mentioned in my printer room, I do NOT do a great deal of printing, but will watch to see what happens the next time I send a document to the printer, and it comes out of standby steve |
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PecosRiverM
Veteran Cruncher The Great State of Texas Joined: Apr 27, 2007 Post Count: 1054 Status: Offline Project Badges: 
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If I remember it's about 1400 watts for a 14ga wire and 1900 for a 12ga.
----------------------------------------14ga is used on a 15a breaker while 12ga is used on a 20a. I put (8) 20a breakers into my man cave when I remodeled.    |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
If I remember it's about 1400 watts for a 14ga wire and 1900 for a 12ga. 14ga is used on a 15a breaker while 12ga is used on a 20a. I put (8) 20a breakers into my man cave when I remodeled.  I bet your power company loves you. |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges: 
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Sgt. Joe, I am running these in my house, and so far have 2 2950's running 24/7, (barring power issues) one in my front/living room, another in the room I keep my HP 5550dtn printer in, and currently running a Dell 1950 III with slower dual quad core Xeon's in my bedroom ( the 1950 is very quiet), I had the 2 2950's in the front room, but with the other loads on that circuit,( window A/C unit) it tripped the 15 amp breaker, that is why I moved one of them. I am going to hook up another 2950 in the printer room later today to see if THAT circuit will handle 2 of them If running 24/7 you shouldn't exceed 80% of the circuit rating (12amps on a 15amp circuit). Your servers are probably pulling somewhere between 1.6 and 2.4 amps each with minimal disks plus whatever else is using the circuit. At a continuous 10.4amp pull my wall plate became discolored and the breaker in the panel felt warm all the time. It made me uncomfortable so I installed two new 20amp dedicated circuits with 20amp receptacles (most electricians will install 15amp receptacles on 20amp circuits if not commercial). I'm running 10 servers in a hobby room and they generate about 12,000 BTUs of heat and fans couldn't keep up. I broke down and installed an 18,000 BTU mini-split AC unit to cool the room. Keep an eye on your power strips and cords to make sure they are handling the continuous power draw. Did you change the wires also?! 'cause circuit breakers are not for wall plugs...actually, some (quality) wall plugs can go higher than rated...they are designed that way & continually tested series in factory! this I know, 'cause I've been working in some of that factories... circuit breakers exists 'cause of the wires! it's the wires which get melted & ignite (usually)...most people only change the wall plug & circuit breaker...& when they crank up the current (Amps), they get a fire inside!  just saying, so you don't get burned!  |
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