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

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1answer
297 views

Installing windows on multiple computers at the same time [duplicate]

i need to install windows on a 150 computers for a bank, i've never done anything like this before, so if anyone can help me find a fast efficient way to do so, they are IBM computers all with the ...
1
vote
1answer
84 views

What hardware profile tool exists for RHEL 5.x similar to `lscfg` or `system_profiler`?

I am looking for an equivalent tool or command to dump connected hardware (and optionally software) to a text or XML file for documenting system configuration on RHEL 5.8 specifically. I am used to ...
2
votes
0answers
253 views

What might cause DIR $file to report “File not found” when DIR $dir shows the same file just fine?

I can DIR a file and it doesn't exist, but DIRing its directory, or a file in the same directory as it, works fine. Is this a hardware or software problem? If it's hardware, is it the drive or ...
6
votes
5answers
11k views

How do I get my HP servers to email me when a drive fails?

Ideally, with as simple of install as possible and without requiring rebooting the servers. Mostly for DL380 G5's if it helps. Thanks.
0
votes
2answers
663 views

HP ProLiant DL320 G5 No Video Output, No Error LEDs, Swapped Motherboard, Same Issue

I have a HP ProLiant DL320 G5 Server that we have swapped out the motherboard with a working one, tried narrowing down removing different memory sticks, swapped out the onboard battery. I have a ...
1
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5answers
1k views

What is the root cause of a Hard Drive “ticking” sound after 15 min of being on?

In my office there is a laptop dell inspiron 1420 with HD of 100GB of space. The computer is about a year old, and the hard drive has a weird and annoying ticking sound. The ticking sound starts ...
15
votes
1answer
7k views

Hosting a ZFS server as a virtual guest

I'm still new to ZFS. I've been using Nexenta but I'm thinking of switching to OpenIndiana or Solaris 11 Express. Right now, I'm at a point of considering virtualizing the ZFS server as a guest within ...
7
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1answer
425 views

Enabling VMware EVC on Westmere E5645 CPU only accepts “Nehalem” mode

Take the following system, a Supermicro VMware ESXi host with Intel Westmere E5645 CPUs. Part of our deployment process is to set the appropriate Enhanced vMotion Capability (EVC) level for the ...
2
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2answers
1k views

Dell Power Edge 2950 - E211 SBE LOG DISABLE DIMM6

Any idea of what this error E211 SBE LOG DISABLE DIMM6 could mean? Anyone have experienced this? I know that it sound pretty obvious, that is the 6th bank of my memory, and guest what: I have ...
5
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1answer
150 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. ...
1
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2answers
379 views

Must partprobe before using drive?

This is a followup question to Cannot mount /dev/sdc1 on Debian 5.0, special device /dev/sdc1 doesn't exist Basically, I have 6 SATA hard drives in a machine and I'm trying to create a RAID6 ...
-1
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1answer
637 views

Are there any good hardware VPN clients for SOHO use? [closed]

We've had numerous support hassles with software VPN clients. Our remote devs need to connect to a number of different customer VPNs. Are there any reasonably priced VPN client boxes we could supply ...
9
votes
4answers
13k views

Incredible low disk performance on HP DL385 G7

As a test of the Opteron processor family, I bought a HP DL385 G7 6128 with HP Smart Array P410i Controller - no memory. The machine has 20GB ram 2x146GB 15k rpm SAS + 2x250GB SATA2, both in Raid 1 ...
2
votes
3answers
188 views

mdadm raid1, drive failure lost 14days worth of data?

I am rather confused. One evening I had a server which had died. I went to reboot it and noticed it was stuck on the "GRUB" boot screen. I then noticed a hard drive had failed. I put a new hard drive ...
0
votes
1answer
308 views

Dropping Packets Randomly

I have a SuperMicro Server based on the X9DR3-LN4F+ motherboard from SuperMicro. Original intentions for the system were quite different from what it has ended up serving, but that happens. It is ...
3
votes
3answers
338 views

How to understand the LSI HBA connector specs?

When reading the specifications for the LSi SAS 9206-16e HBA, it says Storage Connectivity; Data Transfer Rates * 16 ports; 6Gb/s SAS 2.1 compliant SAS Bandwidth * Half Duplex 2400MB/s, x4, ...
0
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2answers
176 views

How do I re-enable the IPMI temperature sensors?

I've never had a problem reading temperature sensors with ipmitool on my server, but recently the temperature readings started showing up as disabled: # ipmitool sdr list Temp | disabled ...
0
votes
1answer
95 views

Which hardware I need for building up a backup server, which is able to store 100TB+? [closed]

we are managing a pool of 40 PCs with an attached storage of up to 3 TB each. Every weekend we copy this data to 3 other PCs with several RAID5-systems inside to have some kind of backup. We chose 3 ...
2
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2answers
1k views

Can I put in laptop 2.5" SATA drives into an HP ProLiant DL380 G5?

I have an HP DL380 G5 server and I was wondering if can I put in standard notebook 2.5" SATA drives? In the front where the drives go, the SATA connections dont seem to fit.
4
votes
3answers
597 views

RAID - buy spare disks at same time as originals?

When using RAID1, is it best practice to buy spare disks at the same time as the original disks to ensure you have the identical type in case they become unavailable in future?
0
votes
0answers
102 views

Performance drop after hours of runtime - how to detecting bottleneck

I am running a local database server for 1 client machine. My DB server runs redis (version 2.6.13) and mysql (5.5.31-30.3-log Percona Server (GPL), Release 30.3). I have 1 Client machine that runs a ...
1
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1answer
65 views

Screw size for Dell PowerConnect rack ears?

Does anyone know what the Screw size is (Thread and length) that Dell use on their PowerConnect Switches, to connect the ears to the switch? In particular the 6224 and 8224?
1
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1answer
177 views

Dell PowerEdge 850 PSU FAN always on [duplicate]

I have a Dell PE 850 wich is used unfrequently. I've noticed that the PSU fan is always running as soon as I plug the power cord in. So I have several questions regarding this behaviour: 1.) Is it ...
19
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4answers
1k views

SSD head / cylinder / cluster details

A customer of ours makes industrial robots that run on very old, but stable, hardware and software. The only bottleneck has always been the hard drive in these moving machines. Due to constant ...
7
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13answers
22k views

HP Proliant DL380 G4 - Can this server still perform in 2011?

Can the HP Proliant DL380 G4 series server still perform at high a quality in the 2011 IT world? This may sound like a weird question but we are a very small company whose primary business is NOT IT ...
13
votes
1answer
2k views

Hardware RAID controller cache battery failure frequency/lifetime?

I'm in an environment that contains many Supermicro servers equipped with Adaptec and LSI MegaRAID hardware RAID controllers. These controllers contain battery-backed cache modules to help boost write ...
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votes
1answer
180 views

What kind of hardware does Microsoft use to build Azure? [closed]

I'm curious about Azure virtual machines and Web/Worker role hardware. What kind of hardware (CPU, Disk, network cards, chipsets, etc..) does Microsoft use to run Azure on? Is there public information ...
1
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2answers
85 views

Install RAID1 without Second Hard Drive?

HP P410i Raid Card. I am waiting for a second hard drive to arrive. Is it possible to start with 1 hard drive and enable RAID1 without loosing data when the second drive is installed?
7
votes
3answers
715 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
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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votes
1answer
54 views

Mounting ssd. Expectations vs reality about server load

I'v installed SSD on my server and moved tmp folder, mysql data folder and 2 most loaded websites(php) on it. I'v expected that server load will fall a little bit, but it seems that it is on the same ...
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votes
1answer
302 views

HP DL360p Gen8 for low latency trading - what to upgrade? [closed]

I'm using HP DL360p Gen8 for low latency trading (but not ultra-low-latency!). It means that i'm working in frame about "10+ microseconds" and i don't care about "1-5 microsecond" or nanoseconds. I ...
2
votes
1answer
207 views

What servers do I need to set up the following simple scenario? [duplicate]

I've founded a start-up recently and am about to add a little structure to it, regarding management, communication and data. I am a software developer and do not know any details about server ...
0
votes
1answer
197 views

Refresh a specific page in ilo 4

I use iLo 4 for my HP dl380 gen 8. I access iLo webpage using internet explorer 10. (Although I would gladly use another browser if anyone can recommend a better one for iLo access). How can I ...
0
votes
1answer
600 views

my ibm x3550 server can't find the hard drives

I recently purchased a used ibm x3550 server with two 2.5" SAS hard drives included. When I boot the server it doesn't recognise them. I get into the bios and I can't see them there. I try to install ...
4
votes
8answers
2k views

Running Windows Server OS on a regular desktop machine

I was thinking of running maybe Windows Server 2008 or Windows Home Server on my home computer. But before I did the formatting etc, I would like to know if this is even possible. And I am then ...
0
votes
4answers
471 views

16 HDD bays in an off the shelf standalone server? [closed]

We currently are using custom built servers as standalone backup machines (using rsync/zfs snapshotting). They run freebsd (just so we can use ZFS) and have 16 SATA HDD's in them all connected as ...
0
votes
1answer
1k views

debian Read-only file system error

I logged on to my debian box and tried running some commands and I was presented with the following message. sudo: Can't open /var/lib/sudo/username/0: Read-only file system After doing some ...
0
votes
2answers
72 views

What Testing for Secondhand Servers?

I've recently bought a used rackmount 2950 server on Ebay to use for a specific project. I'm going to be spending a lot of time on this server, so I want to try and identify any major problems before ...
1
vote
4answers
6k views

Installation of Ubuntu Server Edition on HP Proliant DL360 G3

I want to buy a HP Proliant DL360 G3 server, but I have heard there are some problems with installation of Ubuntu Server Edition on such a server. Is that true and is there any way to fix the ...
0
votes
5answers
2k views

New office cabling: should we use CAT7 or CAT6a? [closed]

We are going to do the cabling in our new office building and we are thinking to lay down 10Gbit cables since we use HP switches that come with 10Gbit ethernet ports. We will also lay down few fiber ...
0
votes
3answers
653 views

Graphing temperature over time for HP iLo 4

Server: HP DL380p Gen 8, running latest iLo 4. One sensor, Sensor #25 for the HD Controller, tends to run a bit hot when compared to the other sensors. It tends to read 75 C. Caution temp is 100 C. ...
3
votes
2answers
177 views

Internal LTO tape drive becomes hot

We use an internal LTO3 tape drive (HP Ultrium 920) in a PC (no particular server hardware) running Linux. The tape drive becomes quite hot - I don't have the exact temperature, but you may touch it ...
-1
votes
2answers
1k views

Choosing a processor for web server: what is more important, GHz or Cache size? [closed]

I'm choosing a new server that will run linux, nginx and php-fpm based web server. Mostly, all the work server is doing - rendering of Twig php templates. Current server has the fallowing processor, ...
2
votes
2answers
274 views

RAID 10 — how do you know a drive is going or is bad?

I have some servers with a datacenter all the servers have RAID 10 setup. How do I know when one of the drives is going bad or is bad and needs to be replaced? EDIT: These servers are unmnaaged and ...
11
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5answers
5k 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
216 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 ...
314
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7answers
58k 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 ...
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1answer
60 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, ...
3
votes
2answers
207 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 ...