Computer hardware is the collection of physical elements that comprise a computer system.

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15
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5answers
8k views

Linux hard drive serial number as non-root

First of all, I would like to apologies for the title for not including hardware details. This is because I am looking for a command that will work in all Linux distribution. Question: I am very ...
3
votes
1answer
291 views

How to use a switch as a network tap?

I would like to tcpdump all traffic that my router does when it makes a firmware update. So I have taken a HP ProCurve 1800-8G switch and mirrored port 7 to port 8. I have connected: Internet ...
348
votes
7answers
61k views

Something is burning in the server room; how can I quickly identify what it is?

The other day, we notice a terrible burning smell coming out of the server room. Long story short, it ended up being one of the battery modules that was burning up in the UPS unit, but it took a good ...
-1
votes
1answer
64 views

Is this a sign of a bad drive? [closed]

smartctl --attributes --log=selftest /dev/sda smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-379.22.1.lve1.2.17.el6.x86_64] (local build) Copyright (C) 2002-12 by Bruce Allen, ...
0
votes
1answer
687 views

Can FCLGA2011-based motherboards support PCI 3.0 on Ivy Bridge and quad channel memory?

This is not a shopping question. I want to know if my basis for technical dependencies is correct. In other words, I should investigate CPU support for certain features before getting lost in a ...
2
votes
1answer
6k views

How to open R410 chassis

I just got a brand new R410 server with a single SATA disc, and want to add two 2TB dics to it. But.. a rather silly problem is preventing me: I cannot open the chassis. How is the chassis opened? ...
3
votes
2answers
308 views

What are cables/boxes called for listening in on a RJ45 cable?

I would like to capture the traffic from a router, so I assume there must exist a cable or hardware box with 3 RJ45 socks, where two of them are IN and OUT, and the third is for capturing device (a ...
-2
votes
1answer
933 views

HP proliant microserver won't boot

I was installing an ethernet driver for VPN on an HP Microserver (on PCI 1). Then, suddenly the server shut down while I was installing it. When I tried to boot it back up it only shows the health ...
1
vote
1answer
551 views

Hardware Virtualization Technology Enabling Issue

I have purchased an Intel i7 3770 and an Asus P8Z77-M Pro; for some Windows Server 2012 testing. In the BIOS I have enabled the "Intel Virtualization Technology", and have several Hyper-V based ...
1
vote
4answers
111 views

What is this terminology and how is it applied?

What is it called when multiple physical servers share resources amongst each to act on behalf of a single opperating system or application for a common purpose? I think Microsoft calls it ...
0
votes
2answers
663 views

IBM DS3512 Connection to IBM HS22 BladeCenter

I have a BladeCenter HS22 with 14 bladeservers. Attached to the BladeCenter I have a DS3512 storage array. I'm trying to access the DS3512 to configure it but can't manage to do it. I have connected ...
-1
votes
2answers
734 views

ESXi 4.0.0 with ASUS M5A78L-M LX Motherboard isn't seeing the onboard NIC [closed]

I just put a new ASUS M5A78L-M LX Motherboard into my server and it's working well but VMWare doesn't seem to be seeing the onboard NIC. I saw somewhere that ESXI 5.0 supports the onboard NIC but I ...
0
votes
1answer
27 views

hosting machine capability [duplicate]

I'm curios what's the traffic a dual-socket CPU server machine can handle? Just hypothetical, does anybody have a clue what are the keystones? Is it more about hardware or connection or anything else ...
7
votes
4answers
5k views

What to do with an out-of-warranty Barracuda Spam/Web filter?

I'm working with an organization that would like to start using a old Barracuda Spam Filter 300 unit. I've sold and configured plenty of these, but was surprised to see that this unit's warranty ...
-3
votes
1answer
200 views

Local disk recomendations for Hyper-V 2012 nodes? [closed]

Are there any local hard drive recommendations for Hyper-V 2012 nodes, running in cluster using SAN for VM's? Are the local hard drive only used for running the Hypervisor or is it used for ...
-1
votes
1answer
502 views

Difference between storage and operating temperatures [closed]

What is the difference between Operating temperatue & storage temperature of switch C3560E ?
1
vote
3answers
4k views

linux freezes - how to find out if hardware or software is the cause?

a couple of weeks ago, my linux server (kubuntu 10.04) started to give me trouble. it freezes after a certain uptime, seemingly between a couple of minutes and a few hours - GUI is unresponsive, no ...
2
votes
1answer
65 views

May a low DRAM router be a bottleneck for a LAN?

I need to install a LAN that is a hybrid between a star LAN and a cascade LAN. There are two levels (I mean that the maximum number of link to go from the central switch to the most external switch is ...
0
votes
3answers
281 views

Can I remove and test hard drive from Raid5 controller without rebuilding?

I have a new PowerEdge T320: Intel Xeon E5-1410 @ 2.8 GHz 16GB Windows Server 2008 r2 configured as Domain Controller Dell PERC S110 Software Raid 4x 7200 rpm 1TB drives configured in Raid5 I have ...
2
votes
1answer
156 views

How to bind stackable switches

Let's say that I have a non modular switch, and that in future I might need to expand my LAN, connecting it to more switches. If I take stackable switches, physically how do I bind them? May I take a ...
8
votes
2answers
7k views

How do I unlock Dell T610 case?

I've just got a Dell PowerEdge T610 server. The case is locked and looks like it needs a flattish key to open. Two circular ended keys came with the server, but they fit the front of the case, not the ...
0
votes
0answers
553 views

Windows Server 2008 R2 Standard welcome screen hangs

Windows Server 2008 R2 appears to be hanging while loading the OS. The server gets to the welcome screen and appears to be loading, but this process for 20-30 mins before the OS loads. The screen ...
-1
votes
2answers
197 views

The device, \Device\Harddisk4\DR37, has a bad block

I've received the error below and wondering if it's something I should be worried about? I've checked the RAID controller and all are functioning without errors. Log Name: System Source: ...
1
vote
2answers
1k views

route packets through hardware loopback interface, not lo

My embedded Linux board has 3 interfaces: eth0 - For all outbound traffic eth1 - A hardware loopback (traffic leaves board, but comes immediately back in the same port) lo - Standard loopback ...
-1
votes
1answer
69 views

S.M.A.R.T does not want to run

How do I run S.M.A.R.T on a server with 2 hard drives in RAID1? I tried: smartctl -i -d /dev/sda smartctl -i -d /dev/sdb smartctl -i -d /dev/md1 but get this error: smartctl 5.40 2010-07-12 r3124 ...
0
votes
1answer
203 views

Hard drives fail, filesystem goes into read-only mode

2 days ago I got a warning message that: A DegradedArray event had been detected on md device /dev/md1. I contacted my data center and asked them to change the hard drive. They told me that ...
20
votes
2answers
7k views

What is the command to flash a NIC link light?

I remember using a command line tool to flash a NIC's link light to identify it. I can't remember for the life of me what it was.
-1
votes
2answers
59 views

server busy threshold? [closed]

i have a server with 512MB RAM running mysql and apache service. I have joomla site inside my server. I want to ask, is there a brief threshold limit of RAM when the server will be stated as busy? ...
0
votes
2answers
67 views

Manage multiple hardware and OS

I'm new at windows management, before I've worked only with Apple Macs. Now I am at a company that has almost 100 computers with different boards, brands, different hard drives, etc.. in different ...
2
votes
2answers
549 views

Not able to achive 6Gbps speed using MegaRAID SAS 9260-4i

This might sounds stupid, but my hardware skills are not very strong. I have a 2U box with MegaRAID SAS 9260-4i - RAID 5 (3 x 3TB SATA III 6Gbps ) using mega raid cli tool here is the drive info. ...
6
votes
2answers
281 views

Should server spare parts be stored in climate controlled storage?

What is a best practice for storing server spares (hard drives, RAM, power supplies, etc) with respect to how/where they are stored? Some options are storing them in climate controlled storage or just ...
1
vote
4answers
2k views

How do I stream video fast and what is required? [closed]

My school is setting up a professional television studio that is going to be recording a 1080p stream into a server I am expected to design with a $5000 budget. I do not know what format the video ...
3
votes
1answer
2k views

DL380 G4 dead after erasing NVRAM

Got a used HP ProLiant DL380 G4 server. It was at least able to start from an Ubuntu live CD a few days ago. When I connected the iLO-port to a router with DHCP server iLO 1.62 was accessibly using ...
0
votes
1answer
472 views

How to retrieve memory type (rdimm or udimm)?

i've some DELL servers, some have registered dimm memory, others have unbuffered dimm. Do you know any way to programaticaly get this info ? wmi class win32_physicalmemory doesnt seem to help on this ...
3
votes
1answer
803 views

reliably and automatically determine connection path of physical position of HDD from /dev/sdX device file

This is kind of a FAQ, but all the answers I found so far are not suited for full automation, which is what I need. So here it goes again. In Linux: Is there a reliable way to resolve the udev ...
2
votes
2answers
102 views

What is this thing?

We just moved into a new office. The previous tenants went out of business, and left behind anything they couldn't sell off in a hurry. One of the objects left behind was this thing: It looks ...
-3
votes
2answers
224 views

How do power consumption and size-of-smallest-feature matter when buying a processor? [closed]

Background: I am shopping for processors to build a server on Newegg. The first bullet point on each processor displays the size of the chip in nm and its wattage. Why? I am looking at the number ...
0
votes
2answers
1k views

install third party ssd in ibm xseries x3650 M4

i am in the process of purchasing a new network server, it's going to host SQL Server and Exchange so i would like to have the best possible IO, the ibm SSD i could afford it's the micron P400e, i ...
1
vote
1answer
814 views

What's the point of Load Balancing between multiple SSID on the single wireless AP device?

I have a Cisco WAP4410N AP device. Since yesterday, it is supposed to serve a network of about 15 (max 20) clients at the same time, but not all clients will be using bandwidth simultaneously, since ...
2
votes
2answers
1k views

Powervault MD circular console cable

We have two Powervault MD SAS devices, the specific model eludes me as these are remote and not accessible to me and anyone on-site doesn't have the capability to locate a service tag/serial or model ...
3
votes
1answer
2k views

Is there a complete reference for HP's diagnostic port 84 and/or port 85 codes?

The HP ProLiant DL580 systems (G5 is the one I'm interested in at the moment) have a two-digit 7-segment display on the system board (visible only inside the chassis) which displays various diagnostic ...
1
vote
2answers
137 views

What is a reliable device to detect, from the outside, if my internet connection has gone down?

We host some web sites on servers in our office. We have two internet connections, a primary and a backup connection (with separate IP address ranges.) We need to be able to detect, from outside our ...
0
votes
2answers
331 views

Can I safely use a 1U server with an actively cooled Nvidia GTX 680 video card?

I'm about to configure some new GPU capable nodes for our needs and I was wondering if someone has any experience with using simple video cards like Nvidia GTX 680 (actively cooled with a fan) in a 1U ...
1
vote
2answers
195 views

Internet access for a number of diffirent VLAN's

There is about 60 UTP cables coming from some different offices into a server room. Every cable could be lead to a single computer or the unmanaged network switch. I need to give them all an ...
2
votes
2answers
261 views

How does one 'qualify a server'

Here is the scenario. Say you are going to be a purchasing great deal of servers, but first are trying out hardware from a vendor, and you need to qualify it. Also, say that the custom software that ...
4
votes
3answers
701 views

What type of SAS/SATA cables do Dell SAS6/iR and SAS5/iR controller cards use?

I'm considering buying a bunch of these to upgrade our servers at work (with SATA drives, not true SAS). We are out of ports to plug disks into, and these cards are decently supported and cheap. The ...
0
votes
1answer
92 views

Onboard Gigabit vs Add-in Server NIC [closed]

If you have server systems running high-end desktop PCs and a few running smaller SQL instances. The systems are time critical so the lower latency we can achieve the better. As it stands we don't ...
-3
votes
1answer
133 views

How much RAM and CPU throughput can handle 20GE in Cloud? [closed]

We're going to build a cloud infrastructure and would like to use the HP DL160 G8 with a 20GE NIC (2x10GE LACP). How much RAM and CPU can handle this NIC? The server will have at least 2x Intel ...
2
votes
1answer
347 views

Bit flipping - detection and reasons

About a week ago I experienced one very interesting situation. I had a workstation - old desktop with Asus P5LD2 motherboard and 4 x 1 GB non-registered DDR2 Kingston memory. That same machine was a ...
29
votes
2answers
8k views

Why are enterprise SAS disk enclosures seemingly so expensive?

I will begin by stating that I do not believe this is a duplicate of Why is business-class storage so expensive?. My question is specifically about SAS drive enclosures, and justifying their expense. ...