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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54
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10answers
3k views

How to extinguish a small fire in a server rack to minimize damage to surrounding equipment?

Suppose I have a rack with several servers and other stuff. One of servers overheats severely and either starts smoking or catches fire while there's a serviceman nearby. If anything similar happens ...
48
votes
17answers
10k views

Do you skip a rack unit between servers?

It seems like there's a lot of disagreement in mindsets when it comes to installing rackmount servers. There have been threads discussing cable arms and other rackmount accessories, but I'm curious: ...
40
votes
7answers
5k views

Cable Management Policy

We've all seen good and bad examples of cable management. What are objective, measurable requirements that can be used in a policy to maintain cabling order in the rack/server room/data center? ...
31
votes
5answers
4k views

What to look for in a server rack?

I'm looking to purchase a rack/enclosure for some servers. As this is my first time shopping for this type of equipment, I need to know what to look for. I'm asking not only about how to buy the rack, ...
21
votes
3answers
2k views

Server won't physically fit in rack: which technical problems will I face in future if I force the mount?

I have to reuse old rack and servers. The server is 74 cm deep and the rack around 65 cm. With a few tricks I'd be able to mount everything I need if I leave back and front doors opened. I thought ...
17
votes
1answer
1k views

How to correctly move a server inside a rack up and down

Maybe a bit stupid question, but Sometimes (rarely but it happens) I need to move a server in a rack 1-2U up or down. What do you think, which of the ways is the most correct and useful and why? ...
13
votes
10answers
4k views

Mounting a server by only its ears?

Is it possible (and safe) to mount a 19-inch 4u rack server on a 2-post rack... by only its ears?
13
votes
15answers
3k views

Tool to assist loading servers into a rack?

This three questions have been merged into this one. The following answers might have come from any of them, or might be a generic answer to all of them. Is there any kind of tool to assist in ...
13
votes
5answers
7k views

Why do rack switches have their ports on the front?

I've ordered some rack hardware from Dell. A 42U rack, a 3U EqualLogic SAN, two 1U PowerConnect 5424 switches, three 1U PowerEdge servers, and some other stuff such as a tapedrive, firewall, UPS, etc. ...
13
votes
3answers
2k views

Economical way to get many harddrives into rack mount?

Please bear with me as being a bit of a newcomer at 19" rack-mounted equipment. I've thought a fair bit lately about the best way of getting 4x or 6x of 2.5" hard drives into my rack and are ...
13
votes
1answer
2k views

My First Rack - Basic knowledge about server racks

So my company recently moved to a new building and my boss had an APC rack installed with the switches in it. We are now looking to buy a rack server to put in there. I'm just a PC repair kind of IT ...
12
votes
6answers
703 views

Can't use “eject” to identify the server

I'm a software engineer and our lab usually has several servers in a rack with a KVM switch. We're developers and we usually have several projects happening at once so the servers are frequently ...
12
votes
5answers
1k views

Why is it important to ensure equipment is well-grounded?

I am installing a new ethernet switch, and the instructions say to connect the ground screw to the rack or some other kind of electrical ground. What are the risks of not ensuring that equipment is ...
12
votes
4answers
3k views

Is it okay to put a 2U server in a 2-post rack?

I have a Dell R710 2U server. It's pretty heavy, so it seems to me like it needs support in the front and the back, but we only have a 2-post rack. The rack is bolted to the floor, so it's pretty ...
11
votes
5answers
954 views

Server rack recommendations

I'm putting servers on a rack for the first time, and am thinking a 4-post open frame rack is adequate for my needs. I'm putting in a few HP DL 385's and a few other things. What I'm wondering is if ...
11
votes
2answers
682 views

Securing a rack in a shared server room

A client have a couple of racks in a shared server room facility. The racks have wheels on them and they are worried anyone could simply access the server room, unplug all cables and roll out the ...
11
votes
1answer
2k views

What is the proper way to manage cabling behind patch panels?

I have a 4-post 19" rack with a 72-port 2U quickport patch panel where horizontal structured cabling terminates. The cables are bundled and enter the rack at the rear. From the back of the rack, ...
10
votes
4answers
1k views

Proper Sizing for PDU's/Power in Rack

I've struggled with sizing my power sources and associated PDU's in my server racks. Somehow I feel like I'm way oversizing things based on nameplate requirements on power supplies. My simplistic ...
9
votes
15answers
3k views

How to manage rack keys?

As a result of a security audit there's the need to lock the racks and manage the keys: Keep the keys safe Record key usage Complying with these two requirements has many challenges as there are a ...
9
votes
5answers
2k views

Rack layout recommendations

We have a 24U rack in our lab and I'm going to completely redesign it during the next weeks due to the scheduled big hardware upgrade. I have a couple of the questions about the layout of the server ...
9
votes
1answer
253 views

Standard Bolt Pattern for Racks in Datacenters

Is there a "standard" way of bolting racks down that is interchangeable between vendors? At our datacenter we've standardized on a Damac rack for our builds. Because we're building in volume, the ...
8
votes
4answers
3k views

Good 1U Rack Firewall [closed]

I'm trying to find a good 1U rack firewall at a reasonable price. Most pricing is completely out of space (thousands of dollars? Why?). I don't want to list all features I need/want (there are too ...
7
votes
8answers
4k views

Any reason to use a rack-mountable server if I lack a rack to mount it on?

I'm somewhat new to server hardware, and was wondering if there was any reason to purchase a 19-inch-rack-mountable server as opposed to a standalone (tower) system, or any difference between the two ...
7
votes
8answers
835 views

Datacenter Power Consumption Table

Does anyone know of a good centralized resource that contains a consolidated list of server specifications relevant to the data center? Looking for Rack U sizing, power consumption, etc. for ...
7
votes
6answers
747 views

Rack layout for future growth

We're getting ready to move to a new colo facility and I'm designing the rack layout. While we have a full rack, we only have 12U worth of hardware right now: 1x 1U switch 7x 1U servers 1x 2U server ...
7
votes
3answers
879 views

What is the name of this screw? (from HP ProLiant quick-deploy rail kits) [closed]

I need the name of the screw for the HP quick deploy rail kit. The screw clicks into the square holes of the rack. It is a Gen4 Rail kit but the screw is like the Gen8 Rail kit ones. I called HP ...
6
votes
5answers
2k views

How does a blade server differ from a normal rackmount server?

This may be a question but I thought I would ask even so.
6
votes
10answers
16k views

Rack layout tools

I'm wondering if there's any tools (preferably offline) that would allow me to layout all of the new equipment that will be going into several standard racks. Currently I'm using Excel to map out all ...
6
votes
3answers
531 views

Proper way to run CAT cables from the front to the rear of a rack?

Lets say I have a forward facing switch, but all the server's NICs are rear facing. What is the proper way to get the CAT cables from the front to the rear of the rack in a way that doesn't open an ...
6
votes
3answers
469 views

Is disk serial readable from supermicro chassis?

We are working with a hosting company for managing our dedicated servers. We asked for a replacement disk on one of the servers by providing the serial number. They took out 2 other disks instead and ...
6
votes
4answers
2k views

Does UPS Rack Position Matter

Short version of question: Is there any reason a UPS (or any other device) should be at a particular level in a rack. Long version (with explanation): I have a full height rack with two servers, ...
6
votes
2answers
532 views

Server Rack vs. Server in PC “Towers”

A friend of mine told me that the company he made an internship at didn't have server racks, because the cooling just takes up too much energy and thus isn't effective. That company was using "normal" ...
6
votes
3answers
192 views

Disaster Recovery Planning, tower or rack?

I'm working on this project to develop a system with centralized information regarding emergencies delivered via open Wi-Fi on a small city. I'm from Chile, so we thought of this system to work ...
6
votes
7answers
3k views

Server Cabinet/Room Cooling

I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in ...
5
votes
1answer
85 views

Power Control Compartment?

I recently purchased an IBM enclosed, rolling rack that had a 6 drive server, huge battery backup, and this strange item called a "Power Control Compartment" I cannot find any good documentation ...
5
votes
1answer
744 views

How good is the noise reduction on an XRackpro2?

Some manufacturers of soundproof rack equipment such as Kell Systems or Acoustirack do quote noise reduction figures but I can't find any specifications for an XRackPro2. Given the evasive nature of ...
5
votes
1answer
980 views

Low-noise fans for Sun 1U rack server?

I use a Sun Fire X2100 M2 (Opteron) 1U rack server for development purposes, and the system has these noise specifications: Idle, at or below 25° C 6.9B Max, at ambient: 7.3B In other words, it's ...
5
votes
1answer
237 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 ...
4
votes
6answers
217 views

Servers with same workload in the same rack: good, bad or unimportant?

Our current server layout (not designed by me) has identical machines located on the same rack. We'll have all the database servers on rack A, all the fileservers on rack B, etc. This seems dangerous ...
4
votes
2answers
509 views

What were your server room pain points, big wins and must haves? [closed]

Like many people on here I suspect, our server room has evolved over time. At the beginning we had a single server running Microsoft Small Business Server 2000 and it sat in the corner plugged in ...
4
votes
4answers
3k views

Why use rack servers over tower servers?

Aside from space, why use a rack mountable server over a tower server? Or is space the only reason... Tower servers are cheaper, more space for cooling, and more expandable... Why rack mount?
4
votes
4answers
172 views

Rack enclosure dimensions

We noticed that rack enclosures have different depths (600, 800, 1000 mm) while the DELL rack servers are 600 mm deep. In addition DELL rack enclosures are only 1000 mm deep. Why should I purchase a ...
4
votes
3answers
1k views

Regarding temperature in our server cabinet

We have a floor standing server cabinet, which sits in the corner of our office. There is no AC in the office, and the average temperature is around 21C (70F). The server cabinet currently contains 2 ...
4
votes
1answer
2k views

PDU says to ground to rack with “thread making screw”.. this is impossible?

I'm trying to use the 'thread making screw' to ground my Dell PDU to the Rack, however the metal on the rack is impossibly hard. Is this even required? The included screws don't even seem "thread ...
4
votes
2answers
564 views

Permanent case for shipping 2U servers? [closed]

My organization ships servers (2U) to multiple sites (back and forth) and the original server boxing is becoming worn. Can someone please recommend a more permanent case? Thanks.
4
votes
2answers
614 views

Replacement Rackmount ears?

I have some 1u and 2u cases where the ears mysteriously disappeared for them, so the cases are loose. My googlefu seems to be weak, are there places that sell "generic" rack ears for 2u cases, or ...
3
votes
1answer
2k views

Difficulty racking HP ProLiant Gen8 servers

We're an all Proliant shop with around 50 servers, mostly DL360s and DL380, from G5's through G7's. We just got our first two G8's in and went to rack them. We were stunned to find out that the new ...
3
votes
6answers
941 views

Can I mix and match rack mount servers?

I want to know if all vendors rack servers are compatible with all rack chassis?
3
votes
2answers
368 views

Cable management between multiple racks

I am in the planning phase of re-cabling our 5 racks in one of our offices and I would like to ask for some guidance on how you go, or would go about managing cables that goes between racks. In our ...
3
votes
4answers
223 views

Mount servers at the center?

I can't afford a 4 post rack right now, but I can afford a 2 post one... However, you can't mount a server in a 2 post rack because it will break the ears. Will a 2 post rack support a server (even ...