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

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4
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6answers
13k views

What is the recommended temperature range for a hard drive?

What is the best temp to keep harddrives running in? I have harddrives that keep failing due to the temp being to high.
3
votes
2answers
920 views

Upgrading RAID controller to 4kn - do I have to reinitialize the array to use 4kn?

I have an enterprise-grade workstation with an Adaptec 6405E RAID controller in it. According to Adaptec, this RAID controller does not, and will never be able to, natively support 4K disk sectors. If ...
1
vote
2answers
1k views

SMS Gateway Hardware/Software

What would be the best hardware and software to set up a Linux-based SMS gateway using a Sprint texting plan?
6
votes
5answers
3k views

SW SSD Raid 1 over HW RAID 10

A provider(data center) recommended I go with 1TB SSDs in a software RAID 1 over HW RAID 10 with mechanical drives. Their quote: Typically SSDs are most reliable than RAID cards and since you ...
1
vote
2answers
184 views

Can I take a mirrored raid drive and use it in another machine

I have about a dozen low end servers of varying makes and models and most have mirrored raid. I'm a bit confused about whether after a disaster (that hasn't harmed the drives) can I can take a drive ...
0
votes
6answers
3k views

How to troubleshoot a black screen (no video) on boot?

On a related question to this one, now I have a file server whose power supply and fans spin up, but gets no video and no beep codes. I have tried two different video cards in the system, and neither ...
5
votes
2answers
653 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 ...
0
votes
1answer
128 views

Windows server 2012 R2 drivers for Fujitsu CELSIUS R930 Power

I'm trying to install Windows Server 2012 R2 on a Fujitsu CELSIUS R930 Power workstation and have problems finding the right drivers. Fujitsu "tech support" won't help me - they don't support server ...
0
votes
1answer
248 views

Can you put different CPUs in a dual-cpu motherboard?

I have an ASUS KCMA-D8 motherboard with two Socket C32 CPU sockets. Only one is used right now. Can if put a different (better) CPU in the other socket and have the motherboard use both? Or do ...
1
vote
1answer
65 views

lvm and hardware raid: hardware raid 5 and raid 1 in single volume group?

I have a system with pre configured hardware RAID. It has 2 disks in a RAID1 configuration. It has a further 6 disks in a RAID5 configuration. The 6 disk RAID5 is split (by the hardware) to look like ...
0
votes
1answer
70 views

Put NIC under heavy load [closed]

I think I've got a faulty NIC so I want to put it under heavy but controlled load to see if and when it dies. How can I generate such a load? The NIC is in a Hyper-V host with Windows and Linux ...
9
votes
5answers
10k views

Should I be concerned about a high SMART Hardware_ECC_Recovered value?

I got such a message in /var/log/messages: Jun 25 06:29:27 server.ru smartd[4477]: Device: /dev/sda, SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 46 to 47 #smartctl -a /dev/sda: ...
-2
votes
2answers
85 views

Adding second RAID controller to a motherboard with onboard RAID controller [closed]

One of our server ASUS M4N78AM motherboard that comes with an onboard RAID controller. We have already utilised it and are running out of space. Would it be possible to install an additional RAID ...
1
vote
4answers
181 views

Hardware Solution to connect to multiple ISPs for one WAN

I'm looking for a piece of hardware to connect to different types of ISPs, normal DSL, cable DSL and USB egde sturfstick to offer one Internet connection with a higher cumulated bandwidth. I'm pretty ...
15
votes
4answers
62k views

DIMMs: Single vs. Double vs. Quad Rank

What difference does the 'Rank' of DIMMs make to server memory? For example, when looking at server configurations I see the following being offered for the same server: 2GB (1x2GB) Single Rank ...
-1
votes
1answer
69 views

Will an average PC run a 10 concurrent write intensive request with 50MB daily database server? [closed]

As I am a average programmer who have never been purchasing any hardware myself, I have to choose a computer for a prototype database server that will be used to serve 10 concurrent request per one ...
1
vote
1answer
762 views

IPMI drivers missing

I am trying to monitor and manage some servers using OpenIPMI in Ubuntu, and for some reason, when I start the OpenIPMI service, it says: Starting ipmi drivers [fail] ...
0
votes
2answers
489 views

HP ML150 G6 upgrading RAM/CPU beyond specs?

I am being told that some limits on some HP servers can be crossed. Do any of you have any experience with that? A ML150/G6 is limited to 48GB RAM but I have been talking to a German company that ...
0
votes
2answers
2k views

Uncorrectable Machine Check Exception on HP DL360 G7

i have about every hour in IML (hplog) from HP DL360 G7 record: CRITICAL: CPU - Uncorrectable Machine Check Exception (Board 0, Processor 1, APIC ID 0x00000003, Bank 0x00000005, Status ...
0
votes
2answers
135 views

1 x Raid card and 6 sata drive over 1 SFF-8087 port [closed]

I have a question regarding LSI00328 LSI MegaRAID SAS 9271-4i Can I connect 6x sata drives to -4i card or I need -8i version
0
votes
1answer
111 views

Fibre card to switch (mini-Gbic)

I have a server with a fibre card in it which I want to connect to my 24 port procurve switch. The 10G 2 port fibre card supports fiber transceivers supporting SR, LR, LRM. The switch has two ports ...
0
votes
2answers
85 views

Evaluating nameserver

We are planning to set up our own dns-server for managing all our subdomians. I wan't to set the leasetime to 1 hour. We going to expect a peak amount of 20 Million DNS requests per hour. I want to ...
0
votes
1answer
42 views

“Core Charge” on defective server HDDs

I have collected a pretty decent amount of SAS and SCSI disks over the years that have a predictive failure warning. I was just about to throw them all out, but wondered if any of the manufacturers ...
0
votes
2answers
77 views

Compatibility between D-Link Media Converter Chassis and TRENDnet Media Converter Chassis

I am working on an experimental networking project. This project will involve a number of twisted-pair to fiber optic media converters. Due to the number of converters we will be using, we are ...
0
votes
1answer
74 views

How big are my disk arrays?

On my SunOS 5.10 host are there 3 Sun 6140 disk arrays, and I would like to know the disk capacities. According to zpool list do I have a 5TB and 16TB pool. format shows me only 12 disks c2t1d31: ...
0
votes
1answer
522 views

How to fix Supermicro AOC-SAS2LP-MV8 on Ubuntu 12.04 when attached drive doesn't show?

I have a Supermicro AOC-SAS2LP-MV8 controller card that I am trying to get to work on Ubuntu 12.04 server (x86_64). The card is based on a Marvell 88SE9485. So far lscpi and lshw see the card but the ...
1
vote
2answers
83 views

VMWare Worksation hardware

I'm gonna spec a new computer, used for running VMWare Worksation. The computer will be running a few virtual machines - A dev machine running VS-2010, a build machine, a version-control machine, a ...
4
votes
3answers
4k views

What is the difference between a HBA card and a RAID card?

I thought I knew the difference between HBA and RAID. In my mind, HBA is offloading from the main motherboard/CPU and is simply JBOD... usually has an external SAS ports, whilst a RAID card does the ...
1
vote
2answers
82 views

Encrypted partition and hardware failure

I have a kind of philosophical question. I'm about to set a new backup server and as time is passing encryption of data seems more and more reasonable. However what if the harddrive goes bad. I know ...
4
votes
2answers
616 views

Is there a way to check that the hardware of one server is the same as that of another?

We have three Ubuntu (trusty) servers taking requests. One of them is having a variety of weird problems that we are trying to find the cause of. Firstly, we want to rule out hardware differences. So ...
6
votes
4answers
839 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 ...
44
votes
7answers
5k views

Probability of Blade Chassis Failure

In my organisation we are thinking about buying blade servers - instead of rack servers. Of course technology vendors also make them sound very nice. A concern, that I read very often in different ...
-2
votes
1answer
540 views

Why does a low level format take very long time?

I can write ~100MB/s on a particular 4TB SAS drive when it have a file system on it, but a low level format on this drive took >16 hours. That's ~70kB/s. Since there is not filesystem and only zeroes ...
3
votes
1answer
5k views

Server responds “bus error” to every command

I have a linux machine dedicated to MySQL server with a pretty high load. Today I woke up and was terrified to see that database server is down. I could connect to it via SSH, but it was responding ...
0
votes
2answers
844 views

RAID consideration for 24 Disk Array

I have here a 24 Disk Array with 3.7 TB disks in it. What would be, performance wise a good configuration when using a RAID 6: RAID 6 over all 24 disks or should I use 2x12 disk RAID 6 and than a RAID ...
-1
votes
5answers
2k views

How to monitor where system is writing/reading disk? [closed]

My system is ubuntu. I want to find out what uses my disk. In fact, I want to see not exactly what uses it, but which parts of it are used. Which files are written and read. I am building home ...
0
votes
1answer
51 views

10 Screen, Two Separate PC day trading setup - Questions [closed]

Currently i have 6 monitors on one PC (4 are data streaming, 1 for trade execution, 1 for web browsing) I would like 10 monitors, however, to reduce lag id like one PC to deal with data streaming, ...
0
votes
0answers
70 views

How to get VmList from CiscoUCS?

We are using XML API to connect CiscoUCS Manager and get all the hardware components. We are in the requirement of getting all the VM deployed in the bladeServer. But not able to find these ...
2
votes
1answer
85 views

Cisco switch, white residue in switch ports

I have 2 cisco small business switches, unknown age and provenance, both have developed a white residue on some of the switch ports as below image: Any ideas what causes this? It looks a little ...
0
votes
1answer
417 views

How to find L1, L1i, L1d cache from dmidecode output?

How to find L1 , L1d, L1i cache from dmidecode output ? (NOTE: dmidecode file is from different server for which I do not have access, So I can not run lscpu command to find the same) ...
0
votes
2answers
70 views

Is it safe to put non-standard units inside racks?

Is it unsafe or might the request be denied by some companies that offer colocation to put non-standard units inside a full rack? This is my case and, speaking of dimensions, it fits. Also, as you ...
4
votes
1answer
3k views

Proliant DL380 G7 won't boot, solid amber power LED

I have a problem with an HP Proliant DL380 G7 that leaves me without much in the way of troubleshooting approaches. This server will not boot. It was stored in a datacenter, and I went to retrieve it ...
0
votes
2answers
381 views

Are AMD Opterons more reliable than AMD FX CPUs?

AMD Opteron CPUs are marketed for servers, and FX CPUs for desktops. However, both support ECC, and while only Opterons support registered RAM, the issue is unrelated to reliability. So, what makes ...
-2
votes
1answer
62 views

Hardware solution for small IT company [closed]

I'm starting up a small programming company for web development soon, so I have couple of questions and dilemmas in my mind. First of all should I go for standalone machines for each programmer or ...
0
votes
0answers
30 views

Can I Use Different Versions of CME and CUE

I am running CME 8.6 on a Cisco 2811. I would like to install NM-CUE and run CUE 7 with this. It this possible, even with a version mismatch?
8
votes
5answers
787 views

Hot spare host vs cold spare host?

We have several hosts where we have an identical hot spare host, which is patched and updated so it is very close to have to same software and config. In case of failure the network cable is switched ...
-3
votes
1answer
67 views

Commodity hardware related, i'm searching for a ILO, BMC, ALOM and in general IPMI alternate solution [closed]

I'm searching for a composite solution to have the same features of an IPMI controller on commodity hardware independently from arch/model and without excessive device dependencies. Essentially the ...
0
votes
1answer
347 views

LSI SMC2108 hardware to HBA

I have SMC2108 (LSI controller) hardware controller, which I want to replace with LSI SAS 9207-4i4e (it's HBA - fakeraid). Can I switch the controllers and to access my data (even with readonly). I ...
5
votes
3answers
1k 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 ...
2
votes
3answers
968 views

Performance of HP SSDs in HP servers

I am trying to find performance data about the official SSDs offered by HP for their servers. I can hardly find any specifications on the HP website or somewhere else on the Web. The device I am ...