Questions tagged [hardware]

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

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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 ...
Trevor's user avatar
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-1 votes
1 answer
1k 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 [...
user1821484's user avatar
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0 votes
1 answer
2k 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 ...
user1821484's user avatar
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-1 votes
2 answers
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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? ...
initial05's user avatar
0 votes
2 answers
81 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 ...
Jamexcb's user avatar
3 votes
2 answers
3k 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. ...
user1007727's user avatar
3 votes
1 answer
4k 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 ...
user160227's user avatar
1 vote
2 answers
4k 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 ...
Loïc MICHEL's user avatar
2 votes
2 answers
119 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 brand ...
Soviero's user avatar
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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 ...
Chris's user avatar
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2 votes
4 answers
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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 ...
mr.b's user avatar
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2 votes
2 answers
6k 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 ...
TryTryAgain's user avatar
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4 votes
1 answer
9k 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 ...
Deep Thought's user avatar
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1 vote
2 answers
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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 ...
Pavel's user avatar
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0 votes
2 answers
4k 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 ...
skuda21's user avatar
  • 173
2 votes
2 answers
10k views

Can IBM System x3650 passthrough SAS?

I am looking at the specs and manual for the IBM System x3650. According to the specs a ServeRAID-8k-l hardware RAID comes standard, but there's an option to upgrade to ServeRAID-8k. If I understand ...
Deep Thought's user avatar
  • 1,628
0 votes
1 answer
215 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 ...
Vort3x's user avatar
  • 149
-3 votes
1 answer
221 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 E5-...
Baloo's user avatar
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3 votes
1 answer
2k 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 ...
grs's user avatar
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2 votes
4 answers
7k views

IBM Xseries 3400 only working while power button holding pressed

I have an IBM xSeries x3400 Intel Xeon server which only works while someone holds in the power button. My server stopped working and I sent it to IBM Service. After a few hours they told me I could ...
adopilot's user avatar
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45 votes
1 answer
51k views

HP ProLiant DL360 G7 hangs at "Power and Thermal Calibration" screen

I have a new HP ProLiant DL360 G7 system that is exhibiting a difficult-to-reproduce issue. The server randomly hangs at the "Power and Thermal Calibration in Progress..." screen during the POST ...
ewwhite's user avatar
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2 answers
266 views

Hardware Diagnosis: Different Ram, Same Memtest Failure

Trying to diagnose random hardware freezes and did the natural thing; started memtesting everything. DDR400 DDR2 Ram CAS 5-5-5-18 Four sets of sticks; 2x2GB PNY's and 2x1GB Elixirs So far I've ...
Andrew Bolster's user avatar
-1 votes
1 answer
120 views

Detect laptop model from a script [closed]

I have portable homedir. I want to include some code to .bashrc, but I want it to be executed on specific models only. It is keybindings code (xmodmap) which reassigns some of keys, so it should be ...
Max Kolesnikov's user avatar
9 votes
4 answers
4k views

DIY Hadoop Cluster - Heat & Dust issues?

Following are links of my DIY 6-Node Hadoop Cluster using i3 Machines, What is the best possible way to protect my design from dust & provide better heat transfer? What should I use to cover four ...
yogesh.panchal's user avatar
-1 votes
2 answers
634 views

What server specs would be needed to handle an ASP.NET website with the following usage? [closed]

I'm currently re-developing an ASP.NET website for a client and they want to upgrade their server hardware, but they're not sure to what. The current server specs are: AMD Athlon 3200+ with 2GB RAM, ...
Adnan's user avatar
  • 115
8 votes
2 answers
2k views

10GBASE-T shielded cable switch-to-server connection

I'm venturing for the first time into the 10 gigabit (over copper) realm. Likewise, I have never worked with shielded CAT-5/6 cables previously. From my own research, I understand the types and ...
VokinLoksar's user avatar
0 votes
2 answers
11k views

How do I upgrade my HP ProLiant ML150 G6 server RAM?

I want to upgrade the RAM on two HP ProLiant ML150 G6. They currently have 2 dimms labeled 2GB 2RX8 PC3-10600E-9-10-E0. I believe these are UDIMMs? The servers have a total of 12 memory slots. In ...
Enrique Soto's user avatar
-1 votes
3 answers
476 views

Mysql crashes. Bad hard drive or hardware?

I've seen high loads and mysql crash 2 times in 1 week now. Could this be the cause? Any idea? Jan 3 09:49:19 HOST kernel: [2272100.568769] res 51/40:38:78:7f:f1/40:00:35:00:00/e0 Emask ...
Mike Janson's user avatar
30 votes
2 answers
16k 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 Enterprise Storage so expensive?. My question is specifically about SAS drive enclosures, and justifying their expense. ...
Sam Elstob's user avatar
12 votes
1 answer
8k views

what's the purpose of SMART's captive test?

When testing hard disk with SMART (for instance using smartctl tool) I can do tests (for instance long test) in two modes: captive (also called foreground mode) or non captive. Non captive mode is ...
user983447's user avatar
  • 1,157
-2 votes
2 answers
90 views

SQL Server: Network pauses after installing cheap SATA card: Is there a solution?

At the risk of being assigned to the "bad DBA" club... I did something desperate, and may have to undo it. Problem: After installing a low cost eSATA board, my SQL Server is intermittently ...
Jonesome Reinstate Monica's user avatar
6 votes
2 answers
11k 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?
XOR's user avatar
  • 163
1 vote
1 answer
632 views

Intel server board S1200BTL: KVMoverIP?

Do I need to buy AXXRMM4LITE module in addition to server board S1200BTL to get KVM over IP functionallity, or is it already built in?
Dmitri Pisarev's user avatar
3 votes
1 answer
2k views

moving raid 10 to another identical server both on Smart Array 6i controllers

I have dead HP DL 380G4 with RAID 1+0 with 1 logical volume from 4x72GB drives on built-in Smart Array 6i 128Mb BBWC. It was shut down properly. It seems it was usual death for Proliant with ILO led 2,...
SalimQrdl's user avatar
7 votes
3 answers
3k 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 ...
kockiren's user avatar
  • 886
4 votes
1 answer
38k 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 ...
Temnovit's user avatar
  • 1,127
2 votes
1 answer
365 views

ProLiant DL360 ASR

I have several ASR events on my DL360 G4p without any reason. There is nothing in the log file. I installed a remote syslog server. There I only see the rebooting messages. In the iLO nothing is ...
Stephan's user avatar
  • 31
0 votes
1 answer
110 views

ReadyNAS 1100 Disk 3 keeps getting bad sectors

I am using a ReadyNAS 1100 and have had to replace the disk in slot 3 4 times over the past 1.5 years. The other disks have been perfect. Disk 1 Power on hours: 26538 Disk 2 Power on hours: 26538 ...
webnoob's user avatar
  • 465
3 votes
1 answer
2k 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 ...
Jost's user avatar
  • 31
13 votes
2 answers
3k views

Is post-sudden-power-loss filesystem corruption on an SSD drive's ext3 partition "expected behavior"?

My company makes an embedded Debian Linux device that boots from an ext3 partition on an internal SSD drive. Because the device is an embedded "black box", it is usually shut down the rude way, by ...
Jeremy Friesner's user avatar
3 votes
2 answers
3k views

Are SAS Drives really worth their money and are they much better than todays latest SATA?

The price difference between SATA and SAS is really very big. Of course I understood, that SAS drives have their advantages, but does this really legitimate a price difference of 100% or more? Should ...
ChrisZZ's user avatar
  • 737
21 votes
5 answers
53k views

How to make my HP server boot faster?

I have an HP ProLiant DL370 G6 server that I am using as a workstation. It takes 60 seconds during reboot and cold boot before screens post with a discrete Radeon HD6xxx GPU. What can I do to make ...
GregC's user avatar
  • 889
1 vote
2 answers
4k views

If I have computers linked through a switch, will they communicate directly? [closed]

If I have a network like: Group1 -> Switch -> Switch -> Server (configured as gateway by DHCP) Group2 -> Switch -----^ (Hope that makes sense...) When computers in each group send ...
user61832's user avatar
48 votes
7 answers
15k 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 ...
ChrisZZ's user avatar
  • 737
7 votes
3 answers
13k views

ECC errors in L3 cache - critical or not?

On a linux server (8x Quad-Core AMD 8378), I'm getting the following errors: [Hardware Error]: MC4_STATUS[-|CE|MiscV|-|AddrV|CECC]: 0x9c294c00001d018b [Hardware Error]: Northbridge Error (node 4): ...
L3error's user avatar
  • 71
1 vote
1 answer
184 views

Motherboard rejects identical hard drive, one works the other doesn't

I have an interesting situation. I have a Dell XS23-SB server that has four blades in it. The blades use Supermicro X7DWT motherboards, and interface with the sata drives through a backplane. I took ...
Payson Welch's user avatar
0 votes
1 answer
79 views

Server upgrade configuration - raid vs. multiple drives vs. combo raid / backup

We're upgrading our Linux box, and moving from CentOS (quad core AMD, 8GB RAM, SATA drive) to RedHat OS (dual quad core Xeon, 8GB RAM, SAS drives) and was wondering... what will provide the best ...
FurryWombat's user avatar
0 votes
3 answers
4k views

How can I remotely tell what brand/model internal SCSI card is installed in a machine?

I am doing some consulting work for a previous employer upgrading and migrating old servers to new hardware. There is an existing file server (HP ProLiant DL380) that has an tape backup drive ...
Peter Tirrell's user avatar
1 vote
2 answers
224 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 ...
Chris Vesper's user avatar
5 votes
2 answers
7k views

Is my hard drive about to die?

I have two hard drives set up as a RAID 1 array on my server (Linux, software RAID using mdadm) and one of them just got me this "present" in syslog: Nov 23 02:05:29 h2 kernel: [7305215.338153] ata1....
Hristo Deshev's user avatar

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