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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Is a 650W PSU enough for 4x 7k HDDs 2x CPUs and a monster AMD Radeon HD 5990 [closed]

I bought a supermicro chassis a few years ago with a 650W PSU for a personal lab I built. Everything has been just fine so far, but now that I'm looking into some GPU based work, I'm finding that I ...
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0answers
324 views

URL Rewriting and Rack base paths

I'm trying to set up a Rails website on Bluehost and I'm having trouble with the path helpers. As I don't want to monkey-patch Rails, I'm trying to solve this through .htaccess. Here's the scenario: ...
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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 ...
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6answers
1k views

What is the specific advantage of a blade server for virtualisation?

We are planning to implement a VDI Solution. We had some discussions about Blade vs Rack. As we are only planning to implement 75-100 Clients, we calculated, that we would need 2 Servers with Dual 8C ...
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1answer
2k views

passenger(mod_rails) fails to start puppet master under nginx

On the server [root@bangvmpllDA02 logs]# ruby -v ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux] [root@bangvmpllDA02 logs]# puppet --version 3.0.1 and [root@bangvmpllDA02 logs]# service ...
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1answer
333 views

software for rack visualisation [closed]

Can you recommend any (preferably open-source) software for server racks visualization? Ideally it should be able to draw cable links between pieces of equipment, and should be scriptable to some ...
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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" ...
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2answers
2k views

Difference between DL380 rails for different generations?

I just got an HP Proliant DL380 G5 server (it's actually Cisco branded, but I don't think that matters), without the rack rails. I'm trying to learn some server architecture and use it as a basic ...
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1answer
232 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 ...
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2answers
553 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 ...
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1answer
500 views

Transporting servers - need special rack/case [duplicate]

Possible Duplicate: Permanent case for shipping 2U servers? I am responsible for our companys server infrastructure at trade shows. We have 2 annual shows, 1 in Las Vegas and 1 in ...
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2answers
785 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 ...
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2answers
406 views

Label Scheme for Rack Mounted Equipment [closed]

Given a lot of the users on here have vast experience, what is the best way to label individual cables for equipment mounted in a rack? I was thinking something like: Port Number of Switch | ...
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1answer
3k 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 ...
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2answers
100 views

IPMI - is it possible to boot a server

Is it possible to use IPMI to boot a cPCI server with a backplane? (in a similar fashion to Wake-on-LAN)?
11
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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, ...
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1answer
540 views

Rack cabinet - ProLiant DL360 G5 and StorageWorks fit

I'm about to order a rack cabinet/enclosure for our 3 HP ProLiant DL360 G5 servers and 2 StorageWork MSA units. The HP Proliant DL360 G6 is 1U each, and the StorageWork MSA Units is 2U. The Cabinet ...
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4answers
1k views

How many hp dl360 g7 in a rack?

It might sound as "how long is a piece of string"? In my current job the process is to leave 1U spacing, with no blinders, between servers; this incurs a considerable loss of space, no event sparking ...
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3answers
704 views

12-24 rack, 10-32 server thumbscrew. How to mount?

We have just purchased a APC rack (model AR204A) with 12-24 threaded holes. We couldn't get a "square hole" model in time for our setup deadline. Unfortunately our rack servers (Lenovo RD240) appear ...
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2answers
307 views

Cooled server cabinet VS server room

The cooled server cabinet was discussed here before but I found my question is a little bit different. We have a client with some servers running into incredible bad conditions. The servers are in ...
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3answers
2k 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 ...
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5answers
2k 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 ...
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2answers
210 views

What measures to take to prevent electrostatic if we dont skip a rack unit between servers?

After going through the post Do you skip a rack unit between servers? . We thought to consolidate our rack to save space and to improve cooling in lab. If we put servers without skipping a single gap ...
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3answers
1k views

Where can I buy stickers/labels to put on rack systems/servers to identify them? [closed]

Where can I buy stickers/labels to put on rack systems/servers to identify them? I want to put my companies logo on them and also I want 2 sizes: small and larger. The larger stickers should have ...
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2answers
289 views

How to mount server into a rack - rails? [closed]

I am setting up a "server closet". I have not worked with server racks before. I got a server rack free on Craigslist. I am not sure how many "U" it is - it's about 6 feet tall. I bought two 4U ...
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1answer
605 views

Sun Tool-less Slide Rails Removal for X4150

I have some tool-less slide rails for some 1ru x4150 sun servers. I can't seem to see how to remove them. Sun in their wisdom did not include this seemingly important information in their ...
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1answer
85 views

Move a Production Switch from One Rack to Another

Is there any good way to move a live, production switch from one rack to a second, nearby rack? The switch does have redundant power supplies, plus we have a HotPlug ...
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10answers
4k 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 ...
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3answers
568 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
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4answers
3k 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, ...
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3answers
204 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 ...
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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.
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4answers
4k views

Server Rack for Home Use? [closed]

I was looking into getting a few shiny rack servers for my home based business. During this, I realized I would need a server rack (so that it looks neat and tidy at the least). The only problem? ...
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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 ...
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4answers
2k 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 ...
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6answers
230 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 ...
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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 ...
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3answers
5k views

how many blade enclosures can you fit in a rack?

Considering the power and cooling requirements of HP's or IBM's newest blade (10U) chassis fully stacked, how many of them can you fit in a standard size rack (42 U) ?
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6answers
834 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 ...
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1answer
77 views

Standalone server setup for compute capacity

I'm developing an application for my company that will require a lot of compute capacity (running some very big mathematical calculations), and looking for some form of server setup to do this. For ...
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4answers
802 views

network rack types [duplicate]

When I go shopping for network infrastructure, I see lots of different kinds of racks available and I don't understand the difference between them. What are the different types of racks you would ...
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3answers
577 views

Are there any “Zero-U” PDU's that allow for power management/remote power control

I can't seem to find any PDU's (in general) that fit a 24U server rack that don't require at least 1U of rack space. (I'd prefer Zero-U) that allows for remote 'reset' of the power ports as well as ...
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7answers
2k views

Where can I purchase a good server rack cabinet? [closed]

We need to buy the first one and don't know where to start... Thanks.
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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 ...
3
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4answers
231 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 ...
11
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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 ...
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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?
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2answers
131 views

Rackmount Hardware Question

This is just a quick question. I havent been able to find any recommendations from Google searching. What is the maximum recommended weight for front mounting rack hardware? EDIT: I have a Hammond ...
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2answers
182 views

Is an EPO required on each rack

I've studied the NEC 2008 version and I can't find any requirement for an EPO to be mounted on each rack. For some reason the place I work requires them at the top of the rack and it's connected to ...
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1answer
317 views

What tools, parts, accessories do you keep in your Colo?

I know Colo is less popular these days with the Cloud, but I thought I'd ask people what tools and extra parts, etc they like to keep in their Colo cages or racks. Here are some of my favorites: ...