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

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495 views

SSD goes undetected/offline unless cold/hard booted

I've had a SSD for a little over a year on a sever. And once in a while, the server will bluescreen/be completely unresponsive. I've found out that it's the SSD going offline while the system is ...
2
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2answers
601 views

SAS drive to SAS/SATA backplane then SATA cables to SAS/SATA RAID card?

I just got a Supermicro chasis: http://www.newegg.com/Product/Product.aspx?Item=N82E16816101241 That has a backplane that supports SAS and SATA drives but the backplane has SATA ports to be ...
2
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2answers
279 views

Cancel Pending Device Uninstall

Just did something really stupid along the lines of an rm rf but with my hardware devices on a Windows Server 2008 Standard box. The damage was 25 devices either removed or given the status 'remove ...
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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 ...
1
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2answers
432 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 ...
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2answers
642 views

What should I check/replace first in response to mcelog “Memory address parity error” / MEMORY CONTROLLER AC_CHANNEL0_ERR messages

I have a server that kernel panics every few days. mcelog tells me: Hardware event. This is not a software error. MCE 0 CPU 6 BANK 8 MISC 0 TIME 1317928482 Thu Oct 6 15:14:42 2011 MCG status: MCi ...
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2answers
94 views

Server Vs Desktop vs Hosted for RAM Intensive, Low Traffic Application Serving Response to API

We are a startup looking at putting our semantic search system for resumes live. The system needs to provide responses to api queries for resume search by running through inverted index data of size ...
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2answers
356 views

Rules to choose hardware for OLTP systems (sql server)

Ok. We know database size, number of concurrent users, number of transactions per minute; should choose number of processors, RAID, RAM, mirroring and clustering. There are no exact rule.. but may be ...
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2answers
235 views

Highly random PostgreSQL database host

We're working with PostgreSQL very successfully on a moderately large project (approximately 12GB of data in our working set) Currently we're on a 2GB RAM machine with 7200RPM disks. You can imagine ...
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2answers
288 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 ...
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2answers
85 views

MySQL - Service Design - 180+ Queries Per Second

Does anyone have any recommendations or know of any decent guides for a MySQL server infrastructure. We are currently looking to implement a infrastructure that can handle 180+ queries per a second? ...
3
votes
1answer
180 views

Upgrading HP DL185 G5 8LFF, is using a Dell J1520 4-Drop SATA Adapter possible?

The HP DL185 G5 8LFF model supports 8 3.5" drives and 1 optical drive. However, instead of the optical drive, I'd like to have 2x 2.5" drives instead. The problem is that the PSU has no more SATA ...
1
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1answer
62 views

Change Hardware Resources During Certain Times Of Day On Windows Azure Virtual Machine

I thought I read you could change the hardware resources during certain times, days, etc for Windows Azure Virtual Machines. I however don't see this option, am I missing it in the Azure portal or is ...
1
vote
1answer
107 views

HP SL250s will not boot from the network, does not appear to DHCP

I have an HP Proliant SL250s Gen8 (right-hand) server which is apparently not able to boot from the network. If I configure the system to PXE boot in the BIOS, or if I hit F12, it does start up the ...
1
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1answer
80 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
370 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
1answer
165 views

best way to go about cost-benefit analysis on hardware

I'm looking to build a low-end computational server (my jargon in this field is especially limited so if someone can state that better please change that to meet jargon). I'm basically running ...
0
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1answer
76 views

How to determine VMware ESX server requirements for n VMs?

I am going to buy a high-end server for my department's daily usage. On this server, I am planning to launch 2 DB servers, 2 Application Servers and around 10 ordinary development PCs on the VMware ...
0
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1answer
270 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 ...
0
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1answer
38 views

Where can one find good documentation describing memory-rank “sparing”?

Where can I find good documentation describing memory-rank "sparing" (for computer-hardware memory-protection configurations)? I'm seeking to clarify what benefits it provides and how it's typically ...
0
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1answer
39 views

What sorts of hardware exists for doing enterprise level web serving in small packages?

My current project involves sending computers to clients that they will plug into their network. These computers fill the role of a web server, primarily. During a peak hour one of these servers will ...
0
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1answer
74 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
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1answer
275 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) ...
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1answer
302 views

CentOS dedicated server hangs and discovers new hardware every 3 to 10 hours

I have a dedicated server since March 2013 with CentOS release 6.4 (Final) and CPanel 11.38.1 (build 15) with [Apache/2.2.24 (Unix) PHP/5.2.17]. The server has only one website with traffic about 2000 ...
0
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1answer
613 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 ...
0
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1answer
463 views

HP ESXi WBEM Agent Not Showing Power Supply Data

Server: HP ProLiant DL 380 G5 ESXi: 5.0.0 U1 (HP Custom Image) HP SIM: 7.1 (CentOS 6.3 VM) I have my basic hardware monitoring up and running. I cannot see events for power supply failure within HP ...
0
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1answer
186 views

vyatta Server Reboots by itself

I have an issue regarding some hardware, maybe you can help me. First, I set up a Supermicro Superserver SYS-5016I-NTF with a Intel Xeon X3470 and 4 GB of Ram with a Hotlava Card Tambora 64G4 with ...
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1answer
115 views

Can't access BIOS - (NEC Express 5800 140hd)

When i try to enter the BIOS pushing F2 when asked ("Push F2 to enter...") i can see "Entering the BIOS..." for 3 seconds on the screen and then my server continue to start normaly. (notice: i can ...
0
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1answer
79 views

Unsure of the use for 2 spare servers, help us decide

My colleague asked me to cross-post this here to receive input from professionals: We have access to 2 unused servers RX300 S3: Disks: 2x73GB, 2x146GB & 2x300GB CPU: 2x 1,994Ghz (intel ...
0
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1answer
359 views

memcached memory usage difference on 32- and 64-bit

We have a bunch of boxes running memcached. Some are 32-bit and some are 64-bit, but all run a 32-bit install of RHEL due to various Perl-related things. We'll call them type A and B respectively. ...
0
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1answer
84 views

restoring a failed SBS 2000 box

I read a post where you had mentioned you have had a PERC card blow up on you in an SBS box... I've got a similar situation where one of my RAID drives failed and then the power supply failed before ...
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1answer
77 views

Implementing hardware virtualization for custom hardware

When using QEMU/KVM there are certain network adapters that are supported and emulated. If one wanted to emulate the guest OS's original network adapter (e.g - a Broadcom interface that was present on ...
2
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0answers
291 views

HP SNMP Traps signalled every 10 seconds for a NIC

I'm trying to setup SNMP traps on my HP DL160 G6 (Xenserver) to notify me whenever I have issues with the server. Following suggestions from this serverfault post, I've installed the HP SNMP agents ...
2
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0answers
158 views

Hardware Clock (RTC) Stuck / Will Not Increment

After we rebooted one of our servers (RHEL), we noticed that it would hang when entering GRUB. The problem was the countdown in GRUB (Booting in 5... 4......) was not counting down, and was stuck at ...
2
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0answers
324 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 ...
2
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0answers
113 views

Anyone have experience with Silicon Mechanics 4-Node Machines?

I'm taking a look at buying some new servers (small infrastructure, 2 racks, etc), and although I like a lot of the features in blades, I'm looking at the price point for Silicon Mechanics' 4-node ...
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0answers
30 views

IBM X3850 M2 (7233) server hard drives - Novice help needed

We have just bought a used IBM X3850 M2 (7233) server. The plan being to use it for CFD analysis calculations, taking the workload off our workstations. Not being an expert on these matters... Can I ...
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0answers
53 views

IBM Power 750 Express SCAN_ERROR_CHRP message

I'm seeing the following error on my IBM Power 750 Express (8233-E8B) server. From errlog, I see: Sep 15 sysplanar0 P PLAT_DUMP_COMPLETE Sep 15 errdemon T ERRLOG_ON Sep 15 sysplanar0 P ...
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0answers
45 views

SMI generation / detection in GRUB / real mode vs. in Linux

I'm trying to get an idea of the frequency and duration of SMI events on a Supermicro X10SAE C226 board (2.0a BIOS) with E3-1245v3 Haswell CPU. The Intel BIOS Implementation Test Suite (BITS) SMI ...
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0answers
51 views

DIR $file “File Not Found” vs DIR $filedir shows it…not permissions, not USB

I was having this problem before on a USB drive, but now it's happening on my main RAID5-backed hard disk: 2013-10-17 9:37 C:\>dir "C:\Shares\Shared\Reference\Safety Management System\Vid eo ...
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0answers
2k views

How to open ports in Cisco ASA 5505 using ASDM?

am new to cisco and i badly need help in opening ports using ASDM. I already tried natting but it only allows 1 outside and 1 inside rule ex. Inside Static Rules 10.x.x.x outside 72.x.x.x Outside ...
0
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0answers
44 views

E5-2667V3 or E5-2640V3 for HP BL460c Gen9 and Oracle Linux 6 + Oracle 12c

We are currently designing a new shared environment (2-4 nodes cluster) which will have: HP BL460c Gen9; OEL 6.6; Oracle 12c database on Oracle Grid infrastructure (with ASM). The plan is to have 8-10 ...
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0answers
30 views

Additional hard drive not detected in BIOS

So I'm working on a server which has a Tyan S2937 motherboard, and 2 CPUs. I have a drive bay capable of supporting 6 drives, and the motherboard has 6 SATA connectors. I want to setup the system ...
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46 views

Allow Non-Administrators to Install Specific Devices - Classes

I'm automating driver installation with the use of a central driver store. An important part of this approach is to add the Class GUID's of the devices/drivers to the GPO (Allow Non-Administrators to ...
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0answers
18 views

Is it possible to disassemble an APC Netshelter SX enclosure?

I need to move an APC Netshelter SX 48U from one room to another, but the new room is lower than the current one and I cannot install it without disassembling it. According to APC, these enclosures ...
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0answers
20 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?
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74 views

What is the source of the interrupt count in /proc/interrupts

I have a system that should receive an interrupt from a digital I/O card at 10Hz. Every so often the CPU usage will ramp up to about 60%. When I examine /proc/interrupts the count for interrupt ...
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0answers
140 views

adding a 2nd network card to linux

I'm on linux mint. I've just installed a PCIe gigabit network card (from eBay!) into my linux machine. I've already had to follow this guy's instructions to get the onboard NIC working correctly. I ...
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0answers
111 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 ...
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427 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 ...