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Questions tagged [rack]

A rack is a frame or enclosure in which servers, networking equipment, and associated equipment is mounted. For questions about the Ruby framework, use the tag ruby-rack.

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Physical setup of redundant servers

We are setting up servers and are limited to one rack. What is the best way to physically set them up. All boxes are in an HA environment except for the voices boxes where are N+1 There seems to be ...
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49 views

Pros and Cons of different server rack upright shapes

Does anyone have any ideas about the pros and cons of the different types of server rack uprights? I tried to search for it but all I found was : Rack Upright Shapes and a small paragraph on how ...
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36 views

How to calculate total rack room ventilation required?

We've got a rack room in a project where we dont have AC. Ive got a room which we plan to setup as per the rough diagram here. The rack room has 3 external walls. The rack is an open frame rack ...
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2answers
96 views

What is the name for the pieces of metal in a rack that cage nuts are installed into?

You would not believe how much consternation this simple question has caused my office. :) When installing cage nuts to mount rails or equipment, the nuts are clipped into a piece of metal with ...
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20 views

What is the old LSI style rails/shelfs called? Picture included

When LSI sold storage they came with L shaped rails/shelfs as seen below. The good about those where they didn't took up an extra unit which the ones I can find today does. In the picture they are ...
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17 views

Why isn't passenger using instances?

I have a slightly busy rails 2.3.5 application running on an EC2 instance from AWS. I'm using Apache 2.4 (Event MPM), Phusion Passenger 4.0.59 and Ruby 1.8.7 to host the application. I currently have ...
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2answers
105 views

How can I adjust the name of a process I run?

I have a rack/ruby application on a server. I run it as follows: nohup rackup -o 0.0.0.0 -p 1234 & In the output of "top" command it appears as simply "ruby" PID USERNAME THR PRI NICE ...
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1answer
103 views

Rack PDU with IP control and surge protection

Im speccing up a new 16A PDU for a 42u rack build, i need a PDU with IP control so that i can power cycle devices remotely. But I've noticed that most PDUs with IP control don't have surge protection ...
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23 views

Stabilising feet for HP rack

I have inherited a HP 10636 G2 42U rack and I'm trying to work out the stabilising feet. Here's a photo of one of the corners (the castor is visible behind the metal bracket): http://imgur.com/a/LLP4K ...
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1answer
63 views

Server Rack setup, correct? [closed]

I plan to build my server inside a rack. It is pretty simple but not cheap so I wanted to know if everything fits? Parts: -https://www.amazon.de/Serverschrank-stehende-Schrank-Traglast-RAL7035/dp/...
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1answer
33 views

Rack Power Draw Reliability

I am responsible for several racks worth of gear, and as part of a datacenter efficiency project, I need to move some gear around. One constraint I'm running into juggling these servers around is ...
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1answer
485 views

Cable management in cabinet and between cabinets

We currently have three cabinets that over time have turned into a spider web. These racks host Servers (power an ethernet connections in the back). Network switches, Firewalls, Routers etc. (all ...
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2answers
84 views

Choosing the correct server rack width

I am required to setup a server rack 42HE that keeps some 2HE rack servers with following dimensions: 89 mm (H), 437 mm (W), 647 mm (D) The rack i want is a 19" one and available in these dimensions:...
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1answer
100 views

How is air-flow designed in closed racks?

I have seen (older) racks which are fully-closed. For example similar with plexiglass doors: Or with metal doors without any grid/holes. Are such racks designed for data-centers with raised floors ...
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3answers
462 views

Difference and compatibility between IBM, Dell, HP server rails

There are 3 main builders of pizza box format servers (19" - 1U, 2U…): IBM Dell HP They all three sell their own rails for the standard or proprietary bay to mount their devices in racks. But what ...
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2answers
161 views

Rack server with NVidia or ATI GPU

For testing our software product we need to generate raster images on a machine with a ATI or NVidia Workstation graphics adapter. Currently we keep a external desktop machine connected to the rack ...
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1answer
161 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 ...
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1answer
145 views

Experiencing lower inter-rack ethernet speed compare to that of intra-rack

I have a cluster with 32 machines. The first 25 machines are on the first rack and the rest 7 machines are on the second rack. Each rack has a 1Gbps Ethernet switch. The network communication between ...
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1answer
259 views

What is “Node Composing” in Intel RSD?

Intel Rack Scale Design (RSD) has some concepts like "Disaggregated Hardware" and allows "Node Composition", but I am not able to find what exactly this is or how it works. EG If a rack has 4 servers,...
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1answer
32 views

Can an OS utilize all 4 nodes (4 x 2(22 core) CPUs=176 cores) in a server rack like C6320?

Are the 4 nodes in the C6320 utilized as 4 different sets of CPUs in a hypervisor?Or can they be all used under one OS? Can all of them being used in a 22 x 8 = 176 core system in say Windows?
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1answer
287 views

Using an earth bonding plug for grounding server rack enclosure

Can an Earth Bonding Plug be used to connect a server rack enclosure for the purposes of electrical grounding from a safety perspective? I've read How do I ground a network switch? (among other ...
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1answer
284 views

Are Rack-Servers always loud? [closed]

So, I'm thinking about getting a rack server (one blade) at home for stuff like gameserver, rendering, webserver, cloud etc but I'm worried about the loudness of the fans. I've only seen one single ...
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0answers
49 views

19" network rack shelf depth?

I am wishing to buy a network wallmount 19" rack, with a gross depth of 400mm. How can I know in advance what is the maximum depth of a shelf and what should be the minimum free space between the end ...
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2answers
40 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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2answers
534 views

Is there a best placement of hot hardware in a rack to maximize convection cooling for the whole rack?

To maximize convection cooling in a rack, does it make a difference whether the hottest items are at the top or bottom? If so, which produces the most cooling and why? Please limit answers to ones ...
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3answers
220 views

Can any standard rack server or enclosure be mounted on sliding rails?

I'm looking to buy an empty rack-mounted enclosure (2U to 4U) to fill with some custom equipment. One of the requirements is that we can easily open the enclosure top and access the contents ...
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1answer
53 views

Has anyone purchased an AcoustiRack?

Looking for first hand experience with an AcoustiRack. Noise is fairly important. The main concern is heat. The unit will have a few Dell servers r510, r620, VRTX fully loaded, 2 APC UPS 2200va. ...
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1answer
834 views

Message from application: cannot load such file — puppet/util/command_line (LoadError)

I have configured puppet with passenger (using - https://docs.puppet.com/guides/passenger.html AND http://www.olindata.com/blog/2014/09/setup-puppet-master-passenger-and-apache-centos ). [root@a-...
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1answer
44 views

Cooling Solution for CCTV Rack

I'll do my best to provide a clear question. I'm not a network/server guy...just a young controls/systems engineer who knows enough to be dangerous :) My company is working on a major controls ...
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1answer
37 views

Access unreachable foot of server rack?

I have a server rack that is in the corner. Pushed it there with the installed casters. Instructions seem to be to raise the rack off the casters using the adjustable feet. Problem is I can't reach ...
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1answer
77 views

In a 42U server rack with 12 very hot 2U-nodes, what is a good configuration? All nodes at the top or bottom?

Currently we cannot fill the 19" rack completely. So we have 12 GPU nodes, 2U each. The 42U rack is connected to a cooling unit that blows cold air in front of the computers, sucking in hot air from ...
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1answer
327 views

Install Ubuntu LTS on a Primergy RX300 S4

I'm a sysadmin beginner so bear with me. We got delivered a Fujitsu Primergy RX300 S4 rack server and we need to install Ubuntu LTS 14.04.3 on it. The supported OS have not listed Ubuntu or Debian - ...
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1answer
58 views

What kind of breakout cables do I need for this rackmount setup? [closed]

I am going to be building out a rack and I would like to re-use all the existing hardware for my NAS device and just put it in a rackmount case. I currently am running FreeNAS inside a Silverstone ...
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1answer
177 views

Side-effects of having different Memory (RAM) in a server? Example 1600 Mhz and 2100 Mhz [closed]

I know that you should always have the same memory clock speed and in best case even the same manufacturer meaning the same RAM Module. But what happens if you use for example the following setup: ...
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3k views

Removing rails from server rack

Not sure this is the place for this but I'm banging my head against a wall and figure before I lose a finger trying to remove these rails I'd give it a shot. Anyone have any idea how to get these ...
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2answers
291 views

Cable management and Rack design

I'm new here, and looking for some suggestions on how to design my rack. I have a chance to tidy up my server room and got a green light on server downtime for 24 hours this weekend. Below is my ...
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0answers
340 views

Fujitsu Primergy RX100 S6 Windows Web Server 2k8 R2 Hard Drives not found

I got a question about our Fujitsu Primergy RX100 S6. We want to install Windows Web Server 2008 R2 on a complete brand new RAID 1. The BIOS finds both of the hard drives and also the virtual disk ...
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1answer
107 views

Exhausting Heat in Server Rack

I was recently provided a 4 post Server Rack/Cabinet (48U) to fit all my equipment cleanly. One of the items they provided was a Tripp Lite Rackmounted A/C Unit (SRCOOL7KRM). This was truly Awesome ...
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2answers
3k views

Cisco Catalyst 2960 Switches - Can I reverse the air flow?

I have some equipment that will be moved to a new datacenter soon. At the current datacenter, the switches are mounted in the back of the racks so the air flow for the switches is reverse in ...
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2answers
670 views

UPS systems in parallel for redundancy and/or capacity, generator as backup, ATS,

I am about to upgrade our server room's power plan and would kindly ask you for your help with a proper, optimal design / advice on "good practice" approach. Please note that our business is small, ...
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2answers
5k views

Interconnecting options for server rack and network rack?

This is my first post on Stack Exchange after years of roaming around. I'm having difficulty deciding on a rack setup that meets our company's needs for scalability, management, and future proofing. ...
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0answers
35 views

How to ground a server rack on 3rd floor office [duplicate]

I am in the process of building out a server rack in an office on the 3rd floor. Does anybody know of any good options out there that can help me out? Wall outlets have 3-prong connectors with working ...
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2answers
4k views

What is the proper way to connect cables from a patch panel to a switch when you have more ports on the patch panel than on the switch?

We're in a situation at our new building where we have 58 drops but only 48 ports on our switch. Roughly 40 of our drops will be in use, but it's a random selection ranging from 1 to 58. Typically I ...
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1answer
913 views

How to wall mount a rack when studs don't line up [closed]

This is my first time mounting a server rack and I'd like some advice. The rack is for my home and will be a 10U wall mount for a patch panel, switch, and a few shelves for UPS and modem/satellite ...
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1answer
257 views

How standardized are rack server components? [closed]

I have a couple of servers at home for personal use, and I'm considering replacing them with rack servers that I'd scrounge up in used condition, just for easier management and whatnot. I don't have ...
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2answers
1k views

Rack Server Width

I am dabbling into the world of rack servers and trying to teach myself a thing or two. I have come to a roadblock about the width of a rack server, I have read that the standard width for a rack ...
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1answer
478 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
112 views

How to choose the right rack and UPS?

I have two configurations: 10 Dell PE R720 servers, 2 Dell EqualLogic PS6100S arrays, 4 Dell N3000 Switches, 1 N4000 switch 20 Dell PE R820, 1 Dell EqualLogic PS6100S arrays, 2 Dell N3000 Switches, 1 ...
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1answer
607 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 ...
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1answer
174 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 ...