This tag is appropriate for questions dealing with the physical environment of a system/deployment (e.g. dust, vibration, etc.) with no better, more specific tag.

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2
votes
1answer
95 views

Send network signal over a very long distance of copper

I have an issue were I need to interconnect 2 switches together. We've estimated that they are 1400 meters away (cabling distance). I wanted to use a media converter to extend the signal on OS1 ...
1
vote
3answers
123 views

Is it possible to find a computer's physical location in a room?

I'm currently working on our network monitoring system (NMS) project, and I want to know if there's a way for me to pinpoint where each PC is currently at. Say, for example, we have a room with 40 ...
0
votes
1answer
49 views

Putting the server “outside” [closed]

I live in Montreal, where the temperature oscillates between a max of 27 celsius in summer and a min of -27 celsius in winter. I am currently in the process of purchasing a cheap decommissioned 2U ...
43
votes
5answers
16k views

On a dual CPU server, is it normal for one CPU to run hotter than the other?

I have a dual Opteron server running Linux with libvirt to host several VMs. The VMs work fine and the server processes OK, but I notice one CPU always runs about 69C (throttles at 70C) and the other ...
0
votes
0answers
125 views

etcd will not start on CoreOS in OpenStack instances

I have deployed three instances of CoreOS in my OpenStack setup. I can ssh into the instances, but etcd will not start. systemcctl status -l etd says: ● etcd.service - etcd Loaded: loaded ...
3
votes
1answer
1k views

Is there a way to use a Xeon Phi 31S1P without a server case? [closed]

Due to the current ridiculous Xeon Phi 31S1P offering (~90% discount until end of year), we were tempted to investigate in the capabilities of this coprocessor, which seems well tailored for some of ...
-1
votes
1answer
72 views

Can a 69,85 cm hp ssf proliant sit in a 800mm rack.

Hi can a hp proliant that is specified to be 69,85 cm in length fit into a 800mm closed rack. No air holes at the front of the rack. But there is a cooling unit attached to the rack. There will be a ...
4
votes
1answer
609 views

Heat generated by a HP ProLiant DL380p Gen8 entry EU servers

I have to buy a stand alone server rack to be placed in a machine room. The temperature can reach 30°C in the room (I have no choice with regards to the location). In order to correct for this I will ...
1
vote
0answers
232 views

Appropriate fan speed for a Dell PowerEdge T710

We have a DELL PowerEdge T710 in our office and it is really really noisy, the fans sound like vacuum cleaners! The discussion is whether the server is malconfigured and can be made more silent or if ...
1
vote
0answers
131 views

Are /dev/disk/by-id symlinks unreliable?

I am provisioning a Nova server and Cinder volumes using a Heat template. In order to identify the Cinder volumes attached to my OpenStack server I would like to use the /dev/disk/by-id/... symlinks ...
-1
votes
1answer
39 views

Are there HDDs which tolerate high ambient temperatures?

For certain reasons I won't go into, I have this small server machine which tends to overheat. I don't have exact temperature measurements, but let's say something like... ID# ATTRIBUTE_NAME ...
0
votes
0answers
131 views

Reset temperature sensor on Supermicro X7DWA-N

My supermicro X7DWA-N will no longer boot and the temperature light just blinks even when the system has been off for 12 hours, so it's not hot at all. Is there a way to reset this alarm and perhaps ...
2
votes
2answers
133 views

Why does the temperature in a pair of disks under RAID 1 showing a large temperature difference?

It appears quite strange to me that temperature readings derived from SMART for one disk is different from its twin in a RAID 1 configuration by as much as 9°C: # smartctl -d scsi -A /dev/sg1 === ...
0
votes
0answers
147 views

How to enable temperature warning for SMART disk?

I have a scsi disk with SMART enabled and with the following information: # smartctl -d scsi -i /dev/sg1 ... === START OF INFORMATION SECTION === Vendor: SEAGATE Product: ...
1
vote
1answer
620 views

HP DL180 G6: where is temp sensor #21

With the warmer summer days starting to hit, my server is increasingly going into thermal protection shutdown due to temp sensor #21 reaching critical level (58*C), as reported in ILO. The fans are ...
5
votes
1answer
274 views

Water-Cooled Rack Door: does it work well with Blades or GPU nodes?

We're considering to equip out server farm with water cooled rack doors, similar to ...
-3
votes
2answers
3k views

HP ProLiant DL380e Gen8 has high fan speed after installing second CPU

Today I installed a second CPU in our HP ProLiant DL380e Gen8, and after booting the fans all went to 99.96%. This causes the server to make an enormous amount of noise. Could it damage the server? ...
0
votes
1answer
318 views

Intel SSB temperature sensor

I have an Intel server motherboard that is reporting an issue with the SSB temperature sensor. I have searched for the acronym but cannot find a definition. What does SSB stand for?
3
votes
2answers
897 views

HP DL380G6: Where is the Temp. Sensor #29 (System Zone)?

The Temp. Sensor #29 of my HP DL380G6 seems to give me a wrong number. It says that the temperature is more than 50C (Caution: 60C, Critical: 65C) while the actual value is 13C. And I think it may be ...
20
votes
2answers
1k views

Protecting Servers from Dust

I have a single server rack (31 of the 42U occupied) in a small (about 10'x10') basement room in a building that is seeing some light renovation... nothing huge, but some non-load-bearing-walls going ...
1
vote
1answer
173 views

ipmitool pef temperature soft shutdown

Recently I've had the technicians switch off the cooling system in the server room, without notifying me first. Since the compute nodes do have IPMI cards from different manufacturers installed, I'd ...
1
vote
1answer
2k views

HP ProLiant DL385 G6 - “Fan Solution Not Sufficient” error

I have a HP DL385 G6 that is acting up. Weeks ago it stopped booting with an error of Fan Solution Not Sufficient. The front panel indicating that fans 3 and 4 were down though both these fans are ...
2
votes
2answers
2k views

When do Dell PowerEdge servers (R210II and R620) automatically shutdown due to over heating?

I've had a hell of a time trying to find out when and how a Dell PowerEdge server (in my case we have a bunch of R210IIs and R620s with iDRACs) deals with overheating. I don't want to wait for the CPU ...
2
votes
1answer
2k views

Can't find fan speed setting on Supermicro X9DRW

I have one Supermicro server with a X9DRW board, BIOS v1.0a, that does not seem to have any way of controlling fan speed. I've looked through the entire BIOS, including the usual location of ...
-1
votes
2answers
172 views

Do all PowerEdge servers have thermal CPU protection?

Cant seem to find anyhting about it. I could test it tho, but a quicky for anyone having the answer. Do all PowerEdge servers have a upper CPU temp limit for shutting down? I'm currently playing with ...
-2
votes
1answer
41 views

VmWare image to HDD [closed]

!Hello, I am virtualizing a Windows 2003 Server in VMWare Server 2.0.2. My goal is to take the virtualized HDD and make it a physical one so that i can boot a real server from it and run it outside of ...
0
votes
1answer
224 views

How to address a recurring low temperature error seen at every boot-up?

After updating to latest controller firmware, I started receiving the following error messages: LSI 2208 ROC: Temperature sensor below error threshold on enclosure 1 Sensors 5 thru 7 Is this ...
1
vote
3answers
196 views

Are memory-module blanks really important to have for a Dell PowerEdge T110 2 server? Or are they optional?

I have removed and installed ram-chips from laptops and desktops before, but this is the first time I am doing it on a server (Dell PowerEdge T110 2). The hardware manual cautions that a memory-module ...
-3
votes
1answer
67 views

What's the smallest physical server available? [closed]

To comply with licensing rules I need to use dedicated physical servers for a particular solution. These can be relatively low spec. Due to physical hosting considerations I need to maximise the ...
2
votes
1answer
343 views

FBDIMM Thermal/TDP Issue

I've got a 2U dual Xeon server with 8x 2GB DDR2 FBdim/ECC ram, on an intel s5000PSL board. It's stable, the ram memtests clean and both CPUs are running cool (35C). Half of the sticks run ~60-65C, ...
1
vote
2answers
212 views

What causes servers to reload or shut down if COLO temperature is around 35C or above?

What causes servers to shut down or reload in case of high temperature? For example Juniper network equipment running Junos OS will halt the routing engine if it's CPU temperature remains above 100C ...
1
vote
1answer
406 views

Dell Poweredge 2950 with E5430 Temperature

So I just picked up a few Poweredge 2950 servers and I have them set up with Windows Server 2012. I installed Core Temp to monitor CPU temperature. One server has a CPU operating temp of the following ...
1
vote
1answer
80 views

Blackout Blind for a server room

Would getting a blackout blind reduce the temperature of my server room? I have already silvered the windows and our aircon is struggling but we are not in a position to be able to replace the aircon ...
12
votes
3answers
372 views

Heat Sink compound and older desktops and workstations

This is my first question asked on SF, so be gentle kids. As my desktops (approximately 110 or so) have begun to age and with my users resisting Windows 8, I've begun to notice an odd trend. We are ...
0
votes
3answers
561 views

Core temperatures 10 degrees higher in one CPU than another, is this cause for concern? [closed]

We have a new Dell server with a pair of 6-core Xeon 2620s for a total of 12 cores. Using Speedfan/HW Monitor, I notice that the cores associated with one of the CPUs run about 10 degrees hotter ...
0
votes
2answers
456 views

How do I re-enable the IPMI temperature sensors?

I've never had a problem reading temperature sensors with ipmitool on my server, but recently the temperature readings started showing up as disabled: # ipmitool sdr list Temp | disabled ...
0
votes
1answer
819 views

Enabling Temperature Support on LSI MegaRaid Cards

I've got two IBM ServeRAID M5014 SAS/SATA Controller cards in two different machines. One reports drive temperatures, the other does not. I am hopping that it is some type of megacli option that I can ...
4
votes
2answers
332 views

How to simulate air flow in a datacenter? [closed]

I have an idea for a datacenter architecture which, I believe, would be very effective in terms of passive cooling. I need to do air flow simulations to be sure that the idea is as great as I ...
1
vote
2answers
272 views

Rack door open, or rack door closed [closed]

In our 'server room' (not much more than a converted cupboard in reality) we have one struggling AC unit that is not man enough to cool the servers, which are housed in a full height rack. The ...
3
votes
1answer
4k views

HP DL380 G6: Where is Temperature Sensor 30 (I/O Board Zone)?

In ILO2 firmware 2.15 on my DL380 G6, the Temp 30 sensor (location: I/O Board Zone) indicates 65C and my fans are running at 78% capacity. The Caution level for this zone is 110C, and the Critical ...
0
votes
1answer
261 views

Refresh a specific page in ilo 4

I use iLo 4 for my HP dl380 gen 8. I access iLo webpage using internet explorer 10. (Although I would gladly use another browser if anyone can recommend a better one for iLo access). How can I ...
10
votes
2answers
2k views

How to calculate server room air flow requirements

I have a small server closet that sits on a climate-controlled manufacturing floor. Since the main room is air conditioned, I want to use the air from that space to inexpensively cool the server ...
6
votes
1answer
292 views

Should a System Administrator handle office furniture moves,setup and procurement? [closed]

I have been getting more and more requests to move furniture and today I was asked to organise furniture for a new office fit-out. How do other handle these requests? Is it often the lot of the ...
1
vote
2answers
2k views

How to connect 2 Physical Networks with 2 Separate WAN together

My customer has two small companies in two separate buildings that have merged. The buildings are 30ft apart, so they ran an outdoor, buried CAT6 cable between them. They want to use the main ...
2
votes
3answers
513 views

Server Room Temperature Monitoring - Where to stick my probes?

I have a small server room approx 7' x 12' with an A/C unit dedicated to this room that is positioned on of the short (7') sides and blows air across the room towards the other short (7') side. The ...
0
votes
3answers
1k views

Graphing temperature over time for HP iLo 4

Server: HP DL380p Gen 8, running latest iLo 4. One sensor, Sensor #25 for the HD Controller, tends to run a bit hot when compared to the other sensors. It tends to read 75 C. Caution temp is 100 C. ...
0
votes
1answer
311 views

How to safely raise server room humidity

We've just completed an office move and had no time after the construction of the office to run any sort of environment testing on the new server room. The server room is a good size and the ...
2
votes
1answer
379 views

I'm considering using a Mineral-oil as a coolant for a submerged server. What fire precautions should I take?

I'm investigating different ways to safely and efficiently cool down one of our servers that uses two GPU cards for intense renderings that takes hours to complete. The overall system wattage is ...
0
votes
2answers
339 views

Can I safely use a 1U server with an actively cooled Nvidia GTX 680 video card?

I'm about to configure some new GPU capable nodes for our needs and I was wondering if someone has any experience with using simple video cards like Nvidia GTX 680 (actively cooled with a fan) in a 1U ...
-2
votes
1answer
162 views

Replacing a loud fan in a 1RU server

I just bought a firewall that is very loud. The biggest problem is the two fans in the back (2 x Sunon 40mm fans) running at full speed. The firewall is 1RU with pfSense installed on it.The CPU is a ...