Questions tagged [physical-environment]

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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2answers
104 views

Why do technicians recommend a lowest temperature for server rooms?

This answer redirects to OpenXtra that suggests server rooms shouldn't run too cold. Google also suggests not going lower than 55°F, but doesn't go into details regarding why. Given that: CPUs do ...
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1answer
48 views

Is the temperature differential in my server room to large under heavy load

I have two temperature readings for my server room one measures the ambient temperature the other measures the exhaust for a server cluster. I have noticed recently that the difference between these ...
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0answers
36 views

Must a patch panel be initially terminated in the rack?

If Cat6 Ethernet cables were terminated to a wall mounted patch panel, is there a method to move the patch panel to a rack (without having to cut them and reterminate them)? Is a patch panel coupled ...
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0answers
14 views

Can a Vertical PDU be mounted in an enclosed rack?

I purchased an enclosed 12U rack as well as Vertical (0U) PDU, but can't figure out how to mount it in the rack vertically. I assume I need to mount it on the side posts of the enclosure, since, if I ...
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2answers
65 views

VM image vs Phyical server image?

I often hear its easy to create the image of one VM and setup it another VM(even instance types are of different types) than creating the image on physical server. In fact one of the devops guy in ...
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0answers
460 views

Mixing SC/APC and SC/UPC

First, I apologize for posting a question in this site despite not having a football-court-sized datacenter under my management (I'm a tech support monkey at a small non-profit), but the topic seemed ...
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4answers
293 views

How should I store my HDDs?

I have a few HDDs which contain backup data. I want to store them in a secure place. I know some good practices like storing them in a different building so if there is, let's say, a fire, you can ...
1
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1answer
214 views

What are the considerations which decide the server Dimensions in Rack Servers?

In a DataCenter, say a rack is 42U high. Some rack servers in that rack can be full-width and 1U high, while some servers can be half-width and 2U high. Yet others can be half-width, 1U, but double ...
187
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12answers
15k views

Physically locating the server

I've got a CentOS server somewhere in the building; I can login into it remotely and VNC, etc. Now I've got to physically move it, and for that I need to physically locate the machine among the ...
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2answers
45 views

Mounting equipment that only occupies half the depth of the cabinet?

I'm a bit naïve at all of this (sorry!), but I have to install a bunch of equipment in our co-location facility. We have a switch that only occupies half the "depth" of the cabinet. How do I mount ...
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0answers
51 views

environment host urls convention and using wildcard DNS

we're setting up new hosts and environment servers on our company... creating 3 server instances... dev, stage, production we've multiple clients and multiple projects per client so this is our idea: ...
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3answers
1k views

Purpose of vent holes on the top of rackmount servers?

Edit: Because of the high number of downvotes on this question, I would appreciate if you could comment on why you think the question deserves so. I believe the question is clearly asking for the ...
3
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1answer
613 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 fiber,...
3
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2answers
369 views

What photograph technology is appropriate for site/datacenter documentation?

I manage 500+ sites and need a better visual way of documenting and walking people through a given datacenter. I'm considering taking several (hundred) pictures and stitching them together so that I ...
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3answers
11k 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 ...
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1answer
775 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 ...
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1answer
958 views

Zero-U PDU preferred mount location

Looking for some experience from the field - The rack I manage has two zero-U vertical PDU's supplied by the datacenter. They have fitted one on each side (one on the left, one on the right). The ...
37
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3answers
34k views

How do servers with redundant power supplies balance consumption?

I have several servers from the HP DL360 line (generations 5-8). Each of these servers has two power supplies installed. The 2 power supplies in each server are fed from different circuits. My ...
51
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5answers
18k 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 ...
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1answer
2k 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 ...
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1answer
223 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
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1answer
7k 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 ...
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0answers
1k 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 ...
2
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0answers
812 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 ...
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2answers
68 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 ...
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2answers
2k 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 ...
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2answers
1k 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 === ...
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1answer
3k 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
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1answer
497 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 http://www.emersonnetworkpower.com/en-US/Products/PrecisionCooling/HighDensityModularCooling/Water-Based/Pages/...
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2answers
19k 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? ...
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2answers
3k 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?
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3answers
7k 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 ...
23
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2answers
2k 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 ...
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1answer
527 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 ...
2
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1answer
19k 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
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2answers
8k 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
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1answer
7k 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 Advanced->...
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2answers
463 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 ...
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1answer
167 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
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1answer
741 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 ...
2
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3answers
998 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 ...
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1answer
243 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 ...
14
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2answers
2k views

Ethernet port plastic plug blocking port access on server

I have Dell Poweredge server with plastic blockers inside their ethernet ports. My problem is that I don't know how to take it out. You can see photo of the plug here: I tried to pull them out, or to ...
2
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1answer
984 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, ...
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2answers
328 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 ...
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1answer
1k 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 ...
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1answer
142 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 ...
13
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3answers
478 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
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3answers
1k 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
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2answers
3k 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 ...