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100
votes
9answers
7k views

Can you mount a network switch upside down?

We just took delivery of a new Avaya 2500 48-port switch, that has 24 PoE ports. The problem is that all the PoE ports are on the left-hand size of the switch, and our PoE device cables can only reach ...
52
votes
17answers
11k 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: ...
32
votes
5answers
5k 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, ...
23
votes
2answers
2k views

What do I need to mount devices with threaded round holes in a server rack with square holes?

My google-fu is failing me on this one. What are the little things called that let you mount devices like switches which expect threaded round holes in a server rack with square holes?
22
votes
3answers
3k 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? ...
14
votes
10answers
5k 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?
14
votes
5answers
8k 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
15answers
4k 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
3answers
3k 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
4answers
6k views

Is it bad to mount a rack mountable server vertically?

We are moving to an office with a server closet that may not have sufficient depth to have a standard server rack. I found a vertical rack mount online (that mounts to the wall) that is 4U. Are ...
13
votes
1answer
3k 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
4answers
1k views

Planning to buy a server with at least 48GB Ram, are the blades way to go?

We're planning to host our website for the first time for ourselves. We have currently have a linode of 8 gigs and the memory is going up to 90% most of the time. So I want to move my website to my ...
12
votes
4answers
2k views

How to dispose of old rack-mount servers?

I have two old rack-mount servers lying around that I want to get rid of. One is a HP DL380 G2, the other is an IBM from the same era. Both machines boot up, but I don't have any harddrives for them, ...
11
votes
5answers
1k 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
6answers
3k views

Cage nuts - which way to insert them?

Cage nuts can be inserted (in square holes) either with the flaps horizontal or vertical. I've seen and used both methods, but am still not sure which is best. Is there a recommended way of inserting ...
9
votes
4answers
2k views

Is it bad to stack rackmount servers?

I have a couple of Dell 1U rackmount servers that I need to temporarily move out of a rack. Is it bad for them to be stacked on top of eachother?
7
votes
10answers
20k views

Rack layout tools [closed]

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 ...
7
votes
2answers
661 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" ...
7
votes
2answers
634 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 ...
7
votes
3answers
1k 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
3answers
1k views

Rack Mounting a Server with hot air vents on the top?

We just got a couple of HP DL360 G7's, and I notice it has vents on the top. More hot air seems to exit through these vents than it does anywhere on the back. All our servers in the past have always ...
6
votes
9answers
18k views

noise damping for rackmount servers on-the-cheap [closed]

The gist: Out-of-warranty rackmount servers can often be purchased very cheaply. The major downside to deployment outside a data-center (for instance, in one's garage) is the noise. I would like to ...
4
votes
4answers
1k views

Server Rack - Rail extension?

We got standard 19-inch server racks and have the requirement to rack KVMs on the top U level. A common issue we got is that due to the build of the server rack (little "roof" on the top) when you ...
4
votes
4answers
4k 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
184 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
4answers
703 views

Bought a 1U server, now can't find rails

I bought a 1U server used on eBay (a Supermicro motherboard, but branded "Asempra"), and I also bought a set of "Supermicro" rails, but unfortunately the rails didn't fit the server. The side of the ...
4
votes
3answers
511 views

Cable Management

I was given the task of (re)organizing cables in one of our racks, and I have never done this before. What system/equipment do you use to organize your cables? The rack I have is 23" and has 19" ...
4
votes
2answers
750 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
3answers
1k views

What's the best solution for datacenter modem dialling?

We have some physical servers that we cannot virtualise because they are connected to analog modems for alert paging. We need to retain this functionality, but virtualise the servers and reduce the ...
4
votes
2answers
675 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
10answers
7k views

Should I get rackmounted or tower servers for in-house use?

Currently we have about 8 or so in-house servers, all of which are Dell towers. We've never needed to upgrade them in a way other than more memory or a HD swap. There’s a 10 foot wide or so rack ...
3
votes
7answers
4k views

Where can I buy a good rackmount workstation? [closed]

We have a product which consists of a GUI program and all the hardware goes in a rack. Our department bought a rackmount server for the first unit, but I dont think this is adequate for applications ...
3
votes
2answers
269 views

Can I simply replace old rackmount motherboard with another motherboard?

I have a 1U rackmount server lying around with an old Pentium 4 motherboard (Super Micro P8SCi). To upgrade this server (on a small budget), can I keep the case/chassis and simply replace the ...
3
votes
3answers
3k views

Can a Switch be Wall Mounted Using Rack Mounts?

We need a new, fanless, managed 24-port switch for our small office and I'm considering the Cisco SG200-26. The issue is that the network cabling in the office means that the switch must be ...
3
votes
1answer
134 views

Do you get access to the back of the rack in a co-location datacenter?

I'm wondering because we're moving our rack to a co-location but we have LOTS of space behind our rack so I mount our switches on the backside for easier cabling. But i've seen a lot of pictures where ...
3
votes
5answers
7k views

Online Source for Rackmount Server Shipping Box [closed]

I have three Dell rackmount servers (2 2U, 1 4U) that I need to ship from Las Vegas to New York. Old shipping boxes that came with the servers were discarded sometime ago. Where can I buy some that ...
2
votes
3answers
362 views

Multiple systems in a 1u rackmount case?

Is there a provider or simple custom build method to fit one or more seperated physical systems (anything able to run server CPUs, with or without HDD) in a 1u rackmount chassis?
2
votes
1answer
231 views

Rack Equipment that is Non-Integer Rack Units Tall

I came across these two items of non-integer rack unit height: 1. This rack mount kit which seems to be trying to make the best of the slightly-taller-than-1U form factor of the Cisco ASA5505. 2. This ...
2
votes
1answer
1k views

How do I choose compatible rails for rack mounting my servers?

I am purchasing a rack mounted server and I have the option of also purchasing one of two types of railings: Rapid Rails for Dell Rack Versa Rails, Round Hole Universal Is there any difference ...
2
votes
7answers
2k views

Rack mounted cooling unit?

We have a small mini rack which houses an X-Serve, Raid and Router. We added some more high performance fan units but still find that it gets quite hot in there and have recently been having to keep ...
2
votes
1answer
1k views

Dell “identify server” light in FreeBSD?

Does anyone know of a way to turn on the identification light on a Dell rack-mount server. This is the light which you can switch on locally by pushing the (i) button on the front of the server which ...
2
votes
1answer
321 views

Outer rails for a Dell PowerEdge 1950

I'm looking at buying a Dell PowerEdge 1950 on eBay. It comes with rails (HN185 and GU092) but as best I can tell these are only the inner rails. Does anyone know which outer rails these go to? ...
2
votes
1answer
67 views

What to look for in a rack that has to survive extreme conditions

I work for a 2-way radio company, and we're spec'ing out a mountain top digital radio repeater system, that will require a server and a switch setup. What should I be looking for in a rack cabinet ...
2
votes
3answers
112 views

Does the mounting of a Cisco 4948 switch need any more support than the standard mounting ears?

For this application, we are building racks of equipment that will then be transported by truck to another location. When a co-worker saw the 4948 in the rack mounted only by the ears, he questioned ...
2
votes
2answers
702 views

Dell R420/R430 - will it fit in my client's rack?

Be gentle, first question... I'm wondering if a Dell R420 or R430 (they appear to be identical in size according to the Dell spec sheet - max 642mm deep with redundant PSU) will fit in my client's ...
2
votes
1answer
121 views

Rackmounting a tower chassis HP BLc3000 Blade System

Ok, so we have a HP BLc3000 that we are bringing in from a remote office to our central datacentre, its currently in its purchased tower / pedestal configuration (with the wheels and all that) Is it ...
2
votes
0answers
114 views

Anyone have experience with Silicon Mechanics 4-Node Machines?

I'm taking a look at buying some new servers (small infrastructure, 2 racks, etc), and although I like a lot of the features in blades, I'm looking at the price point for Silicon Mechanics' 4-node ...
1
vote
3answers
2k views

Is it possible to use mixed 110V / 208V power on a single server with dual power supplies?

Is it possible to run a dual power supply server with one PS plugged into 110V, and the other power supply plugged into 208V? We've asked the vendors and they say they've never tested it or some other ...
1
vote
5answers
928 views

Specialized Mounting Brackets

We are currently upgrading our tower based build server to a new 19" rack mounted unit for our software development team. Our new rack server has a maximum depth of 22 inches. So to accommodate this, ...