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

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Could SpinRite possibly be messing up my laptop hard drives?

Context: We have a midsize business with a few dozen laptops. Whenever we get one in because someone leaves or gets an upgrade, standard procedure is to zero and then run SpinRite (level 4) on the ...
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3answers
382 views

Why Do Hard Drives Fail?

I'm just quite interested in the reasons why hard drive failures occur. Some people say that it's because it was handled poorly during the shipping and transportation processes while others say that ...
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3answers
25k views

ECC chipkill errors: which DIMM?

We often get DIMMs in our servers going bad with the following errors in syslog: May 7 09:15:31 nolcgi303 kernel: EDAC k8 MC0: general bus error: participating processor(local node response), ...
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6answers
485 views

Will wear induced by turning computers off in the evening be offset by energy savings?

I'm asking this here because this is primarily a huge office scenario and administrators will more likely have the answer I'm looking for. Employees' desktop computers can be either left turned on ...
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2answers
7k views

Dell Perc 6/i and 3TB drives?

Does the dell Perc 6/i controller support 3TB drives?
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3answers
625 views

Would unplugging a drive simulate a drive failure?

I just set up a RAID 1 array, 2 2tb drives mirrored. I am wondering what will happen if one were to fail. Would unplugging one of them be a valid test? I am using the Onboard controller of an asus ...
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2answers
2k views

Why are “sectors per track” still relevant on a modern OS with modern drives?

I am building out a new machine and the raid controller is asking me for sectors per track. I haven't had to deal with disk math in a long time (1998?), and I can't find anything that pertains to ...
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2answers
3k views

How long should rebuilding 250GB take? [closed]

In a PowerEdge 1900 have I a hardware RAID 5 of 5x250GB disks + 1 hot spare 250GB. Disk 2 have errors, so I forced it offline in the raid bios to replace it. Now it have been rebuilding to the hot ...
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1answer
892 views

interpreting stickers on RAM

Does anyone know how to read the labels on RAM? Or have a link to a good resource for reading the labels? Here's why I'm asking: I have a third-party Dell server in my rack. The vendor sent us ...
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3answers
3k views

Is it possible to hardware accelerate LUKS encryption?

My Linux server spends a lot of time computing LUKS encryption. Is there any way to hardware accelerate it (with a PCI express card for example)?
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2answers
5k views

How to find out PCI version information in linux

How can I find out which PCI version (2.0 , 2.3) are supported by the motherboard - even for slots which do not have any cards connected to them. lspci -vvv does not seem to show information for PCI ...
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2answers
2k views

Hardware requirements for a Virtual Server

I moved this question from StackOverflow because it makes more sense to have it here We have decided to go with a virtualization solution for a few of our development servers. I have an idea of what ...
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2answers
222 views

Oracle: 1 Large Server vs. 2 Smaller Servers?

We are in the planning stages of setting up our production Oracle 10gR2 environment. Our budget gives us the ability to buy 2 processor licenses of Oracle DB Standard Edition. We have minimal ...
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4answers
362 views

What should I watch out for in building low-budget storage servers?

I'm looking to replace our current storage. The existing system is just a 450GB file share on our 7yr old domain controller, plus another 150GB from another server. We map these to drives on the ...
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8answers
959 views

Free Tools for Hard Drive Diagnostics [closed]

Are there any free tools available to perform hard drive diagnostic? I have an old 3.5 IDE Samsung HDD which I use as an external drive through USB connection. I recently started to have problems with ...
6
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1answer
120 views

Track Recurring Purchases

I have been asked to put together a document that contains all of our yearly purchases for IT. How do people organize this. I right now have a simple spreadsheet with items on the left and months at ...
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2answers
2k views

Hadoop disk fail, what do you do?

I would like to know about your strategies on what to do when one of the Hadoop server disk fails. Let's say, I have multiple (>15) Hadoop servers and 1 namenode, and one from 6 disks on slaves ...
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4answers
415 views

What is a a good serial-to-USB adapter?

Serial ports on devices are still used for many things, especially on network devices. However, most modern laptops no longer have serial (aka "COM") ports. So what I'm curious about is: what is a ...
6
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1answer
4k views

hardware recommendations for HAProxy for a small or medium traffic site

I am interested in setting up HAProxy for use as a load balancer for a set of small traffic web applications. The use is growing and might become medium sized in the near term (6 months or so). Mainly ...
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4answers
806 views

Hardware needed for receiving and recording videocalls in Asterisk

I'm planning an Asterisk configuration that should record videocalls and then feed it to an application. From what I've researched, it seems like app_h234m is the way to go. But it's not clear to me ...
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1answer
1k views

Are keys for HP ML 150 G6 chassis all the same?

Recently we dragged a heavy box next to the HP ML150 G6 Server which had a chassis bezel key sticking out of it. So the bezel key broke in half. Is it possible to buy just a replacement key or they ...
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9answers
4k views

Why DELL PowerConnect and Juniper are so rare ? Why do enterprises stick with Cisco? [closed]

I have a little question, I'm actually studing IT in France, and when looking on alternative on the very [...] very expensive Cisco equipments, I've found Juniper and DELL PowerConnect pretty ...
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13answers
2k views

What are the Benefits of Server Hardware? [closed]

What are the benefits of using Server Hardware versus just placing server software on top of Desktop Hardware? I've been running a small time webserver for a couple of websites, a blog and a ...
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5answers
6k views

What hardware do the Google servers use?

What kind of hardware does Google use? Exclusively Intel processors? Always? Xeons, Duos, or Quads? Intel chipsets? motherboards - Intel, Gigabyte, MSI? What kind and build of RAM? What physical ...
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2answers
3k views

How to reset password for HP Proliant ML330 G6

We have HP Proliant ML330 G6 and its BIOS is closed with password. Password is already forgotten and we can't get there. Is there any way to crack or reset a password at this box?
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3answers
11k views

Moving a RAID array from one machine to another

I'm not too familiar with RAID arrays, but I plan on making a RAID 5 array for a fileserver. However, once I get the RAID running for a while, I have plans to move it to another machine (with ...
5
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2answers
172 views

Power on machine when there is power?

Is there a solution for powering a machine back on after power loss once the power is back on? I could use wake-on-lan, but if there is a solution (software or hardware) to automatically power-up once ...
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8answers
7k views

Hard Drive Speed: RPM vs. Cache

When trying to choose a SATA magnetic hard drive (not SSD) for high performance for both random and linear access, which should be the primary factor? For example: would a 10k RPM drive with 16MB ...
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4answers
797 views

Which CPU configuration for new servers (IIS7 / Windows Server 2008)?

I have a certain budget for ordering a couple of new servers from a vendor. The new servers will run Windows Server 2008/IIS 7 with a lot of web sites (ASP.NET and classic ASP). They don't have to ...
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6answers
3k views

What are the benefits of XServe hardware and Mac OS X Server?

Are there any distinct benefits to going with Xserve hardware and OS X over standard Dell / IBM servers running Windows Server (2003 or 2008), are there any tasks they are reputed to be better at?
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3answers
2k views

How can I uprade my software RAID1 set of drives?

I've got two 600GB drives in a software RAID1 setup on a physical Debian server. I want to be able to upgrade the capacity of the server by cloning the drives to a matching pair of 2TB drives. I can ...
5
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2answers
17k views

How do you repair a damaged or corrupt partition? [on hold]

I have a user with an external hard drive that is no longer recognised: the drive letter does not appear in My Computer. The drive is a Western Digital My Book Essential Edition (WD2500C032) With ...
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2answers
425 views

Which STONITH hardware for power fencing?

I'd like to setup a two node high availability cluster using corosync/pacemaker/drbd. For that, of course, I need fencing. As far as I understand, all IPMI/iLO/... solutions do the job, but only as ...
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6answers
8k views

How to best migrate a server to new hardware

I'm getting ready to migrate a server from old hardware to new hardware. I'm thinking of doing a P2P migration rather than actually rebuilding, reinstalling and migrating databases. The servers are ...
5
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6answers
5k views

How can you reduce ambient noise from servers?

I have recently installed a IBM x45 with two DS4100 (SAN) and due to space constraints it is generating too much noise in adjacent rooms. Are there any good ways to isolate the noise from servers? ...
5
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2answers
182 views

New server causing weird noise in headphones and speakers; Is this electromagnetic interference? What's causing it?

I work for a small radio station that recently acquired a refurbished Dell PowerEdge 1950 server. After placing it in the server room along with several other servers and sound processing hardware ...
5
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4answers
2k views

What is the difference between SAN Hard Drives and Normal Hard Drives?

At work, we have decided to finally virtualize and have decided to upgrade out SAN setup with higher capacity Hard Drives. However, what exactly is the difference between Hard Drives that come ...
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5answers
339 views

Please help me add to this script to get server hardware info

(If this should be on stackoverflow just tell me...but it seemed more fitting here) I found the script below online from this site: http://forums.webhostautomation.com/showthread.php?t=8667 Can ...
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4answers
273 views

Hosting a server for websites, ftp and random use at home? [closed]

I'm wondering what's the best option for me if I want to move all my hosted websites (from a hosting company) to a server at my own home? Basically, the needs I have are: be able to host websites ...
5
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1answer
21k views

What's the bandwidth and form factor for PCIe x1 x4 x8 and x16?

What speed, number of pins (physical size) are PCIe x1 x4 x8 and x16? Normally I would google to find a photo showing the various types of PCI Express cards and their max bandwidth. Now that ...
5
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5answers
680 views

When using hard disks as inactive storage, what is best amount of disk activity?

Hard drives are a reasonably cheap way to store a lot of data, and have other advantages. I am considering using them as backup media for long-term storage. I've heard that if I disconnect a hard ...
5
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3answers
205 views

What do you do with all the leftover components from a server purchase?

So when I buy a server from HP, it typically pays to start with a pre-configured Smart-Buy and then add all the junk I want in it to the order. So what should I do with all of the stuff that came ...
5
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3answers
710 views

Hardware checks for Dell R820 Servers through Nagios using SNMP

We use Nagios for monitoring. Is there a way to create hardware checks using SNMP MIB for R820 servers running ESXi5.x on them? Right now we are using this python plugin: current python plugin But ...
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3answers
956 views

Are OTP/OATH (RFC 4226) Hardware Tokens Re-seedable?

We set up a two-factor authentication system that uses Google Authenticator to use OTP via mobile phone apps. Some of our users however don't have smart phones so we want to be able to use hardware ...
5
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2answers
5k views

Can I mix Low Voltage (LV) ram wiith Regular Voltage RAM?

I heard from our vendor that it is okay to put Low Voltage ram with regular voltage RAM. They said all that would happen is that the LV RAM would ramp up to match the 1.5v ram (in other words, the ram ...
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2answers
41k views

What is the difference between RDIMM vs UDIMM

I don't quite understand the differences between the two besides the obvious price differences. What does each offer over the other?
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4answers
7k views

Restarting an IBM BMC without restarting the server itself

I have a few servers with IBM BMC (Baseboard Management Controller). I'd like to power cycle the BMC without restarting the server. Is this possible? How? Note: On one of them, the web interface is ...
5
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1answer
224 views

Sudden and permanent increase in CPU input voltage, core temperature and fan speed without corresponding increase in load

One of my servers shows strange change in its monitored parameters. Last Sunday evening one of voltage measures ( in0 which I think is Vcore) suddenly increased by 20% from ~1V to ~1.20V on average. ...
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1answer
280 views

Hardware/topology recommendations for low latency UDP network

I'm setting up a LAN comprised of 60 end nodes that are receiving a high volume of UPD datagrams from one master server. The server sends 60 unique datagrams every 100ms, each datagram is 64 bytes. ...
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2answers
10k views

How do you find system manufacturer/model on Linux without root access?

I'm working on a module for Condor that will collect hardware information so that we can use realistic numbers to compute power savings, etc. The difficulty is that I don't maintain most of the ...