Questions tagged [hardware]

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

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Linux MD RAID with btrfs stuck and consume 100 % CPU

The issue During last several weeks, I am experiencing annoying issue on my physical server with Linux software RAID 6 (md, mdadm) with btrfs file system on it. Once in several days (irregularly, as ...
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3answers
79 views

Intel Xeon E5-2630L Vs E-2124

I have a dedicated web server with a web hosting company and am looking to move to a cheaper (saving about 35%) offering, but am concerned about possible performance issues. It's running FreeBSD/...
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23 views

Why SFP+ adapter is warm up when server is powered off?

I got a new server: Supermicro with installed ASUS PEB-10G/57840-2S SFP+ network adapter. I was surprised to find out that the adapter is hot when server is powered off, just plugged power cables. 1) ...
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24 views

smartctl harddisk check doesn't show Attribute

today i install on my linux server the app smartmontools, after testing my hardrive (raid1) he doesn't show the Attribute. After the command smartctl -a /dev/nvme0n1 ,i get the result without ...
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1answer
35 views

How to log a single-board computer events?

I have a single-board computer, I want to knows whats going on when it boot up and start up because i never get access to its BIOS, can I log the events/activities happening on the board when it get ...
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Windows Server 2019 goes down and loses connection every few day. Ideas on how to diagnose?

I have a hosted dedicated Windows Server 2019 that is going down every few days. Randomly all of the websites that are hosted via IIS/PHP/MySQL will just stop working (going to the www.domain.com will ...
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28 views

FBWC capacitor pack hp Proliant DL380e Gen8 is broken down

I have a HP server Proliant DL380e Gen8 and it presented a problem that does not turn on the server and the system health LED gets flashing red quickly. After searching for information on the internet ...
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44 views

What is the difference between Converged Network Adapter and Server Bypass Adapter?

Intel® Ethernet Converged Network Adapter X540-T2 Intel® Ethernet Server Bypass Adapter X540-T2 I've found an info on CNA but no info on Server Bypass Adapter. What is this? Which one is more ...
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21 views

Upgrading hardware for better performance of API

I was working with a Zabbix, using the API and frontend in a RedHat server in the AWS cloud, I just have access to the machine today, wondering why the server was so slow, both on the API request and ...
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1answer
49 views

SSD does not show up in server without RAID

I have a server Supermicro SuperServer 6017R-72RFTP with the motherboard X9DRW-7TPF. I have a 1TB Samsung SSD. The SSD shows up when the server boots and in the BIOS, but when I go to install an OS it ...
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Control lamp from FreeBSD

I have a webcam connected to a FreeBSD server that I want to collect and email an image on a schedule via a cron job. The room it is in may not always be lit. I am hoping to find some solution where a ...
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Approach for IT Support assistance

Let's say that you are a company that gives IT Support. Your client contact you to have a price quotation to give IT Support for the following areas: Network (Wifi included) Servers Storage Cloud ...
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How can I connect an SAS drive to a server mobo without native SAS port

Here is my motherboard https://www.supermicro.com/products/motherboard/Xeon/C600/X9DRD-iF.cfm I don't see SAS listed which is why it's not reading, or because it isn't using an SAS cable. SATA is ...
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28 views

Are there OCP mezzanine cards that provide more USB ports?

I'm putting together an Epyc workstation, and strongly considering a Gigabyte MZ32-AR0 motherboard which is primarily intended for rack servers. This motherboard has a space for an OCP 2.0 mezzanine ...
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152 views

2020: Why do people use expensive rack servers when desktop/mini pcs are way cheaper? [closed]

First of all, it's 2020... not 2010. A DELL R240 (The lowest end server) costs about $1500. A small/mini desktop pc which is at least 3x faster costs only $500 (Example the Intel NUC) Also to note:...
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How can I tell if RAM sold on the internet is SODIMM size if it is not mentioned?

How do I know if the following RAM is SODIMM size? Manufacturers never make it simple to buy... https://www.scorptec.com.au/product/Memory/DDR4/79106-KD4AGU880-32A160T http://www.klevv.com/ken/...
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79 views

HP Microserver G8 flashing green LED on power button, not booting

Bought the Microserver with the issues described hoping I could make it work based on a few cases I researched upfront where OP got it solved by replacing CMOS battery or otherwise resetting CMOS/...
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Can hardware error make server unreachable?

Hello I have a centos dedicated web server , I run plesk on it with one website with very low traffic. Today I couldnt reach my server over web interface also over ssh. It gave me connection time out ...
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Historical GFLOP/Watt datapoints

In preparation of a business case, I'm looking for any available data on historical GFLOP/Watt performance (preferably with specific gear included); use case here is long-term performance trends (cost ...
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1answer
32 views

Mixing DIMMs in Dell R815

I am about to upgrade RAM of a Dell R815 with 4 AMD 6174. Current working config is 8 x 16GB RAM (2 on each CPU) of unknown specs. I will be adding 24 x 16GB 4Rx4 PC3L-8500R-07-10-F0-D2 M393B2K70CM0-...
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137 views

Memory controller or ECC errors on Xeon server. How to interpret the syslog entries?

I just got an alert from one of my servers, running FreeBSD 11.2 on a Xeon E5-1620 v4 with ECC. Its the first time I've seen an error like this, and there's a lot of detail. But it's also a one-off ...
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97 views

NMI errors on IBM x3650 M3 server - how to determine cause?

Server is IBM x3650 M3 with 144GB ram and two IBM Serveraid M5015 controllers. Running a Windows Server 2012R2 HyperV host. It's been operational with us since early 2017, no problems until just this ...
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110 views

HP ProLiant ML350 Gen9 - Replace SFF cage with LFF cage to use specific HDD

Recently, I was given the task to replace the SFF HDDs in a HP ProLiant ML350 Gen9 (PN: 776973-425, tower version), and use LFF HDDs instead. The HDDs are 4TB SAS 7.2K LFF SC DS HDD (PN: 872487-B21). ...
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86 views

OCZ Revodrive 350 srs interrupts

We built some servers running Windows Server 2016 out of some "spare" parts with the following specs: Supermicro X10DRH-iT Dual E5-2620 v3 256GB Registered ECC DDR4 RAM 1x Adaptec 71685 RAID ...
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1answer
32 views

Programs to monitor CentOS servers and workstations?

Are there programs / solutions that would allow me to monitor the hardware, software, issues, performance, networking and I/O of approximately 100 CentOS/Rhel servers and workstations? Google finds ...
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26 views

File changes rollback. Possible faulty disk cache?

I have dozen hard and virtual machines, windows and linux. Sometimes i have strange rollbacks of recently modified files. Linux configuration files can rollback after reboot. On windows some ...
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13answers
19k views

SSD or HDD for server

Issue I have read many discussions about storage, and whether SSDs or classic HDDs are better. I am quite confused. HDDs are still quite preferred, but why? Which is better for active storage? For ...
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25 views

What's the more decisive server hardware vector for heavy load production webserver performance [duplicate]

I'm about to buy new server hardware and I was wondering, in your opinion, and reducting problem to one machine (that's it, no more complex network infraestructure in play) what's the local server ...
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1answer
607 views

ESXi 6.5: Relation between “expose hardware assisted” and “CPU/MMU virtualization”

I'ms crawling among docs, sites etc. to understood relation between two ESXi parameters of VMs: "Expose hardware assisted" and "CPU/MMU configuration". The first is about to authorize VM to directly ...
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257 views

Supermicro Motherboard won't boot, onboard power LED lights up

I'm having issues getting a Supermicro motherboard to boot. When I switch the PSU on, the Onboard Standby Power LED lights up on the motherboard. Pushing the power switch then has no effect. No beeps, ...
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75 views

2 x Intel Xeon 5645 vs 1 x Intel Core i7 3.9Ghz: what is a fundamental difference?

I would like to understand a fundamental difference between the two following setups: 2 x Intel Xeon 5645 6x2.40 GHz + DDR3 memory 1 x Intel Core i7 4x3.9Ghz + DDR3 memory I am running a ...
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56 views

Increasing chassis fan speeds?

I have a rack-type server whose motherboard is ASUS Z11PG-D16 Series (according to lshw). ipmitool reports 7 front fans, and I would like to increase their speeds. Is there any way to do that? ...
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42 views

How to find out WHICH CPU is damaged?

On one server we keep getting Error ID 19, Internal Parity Error. We already tried temporary disabling the Meltdown/Spectre fixes to no avail, so we think one of the CPUs is broken. The server has 8 ...
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1answer
169 views

Does Xeon Harpertown (E5400 series) support ECC DDR3?

Is it possible to use Xeon E5450 with 8GB (preferably 16GB) DIMMs of DDR3 Registered Buffered ECC RAM? I checked Intel's Spec page for Xeon E5450 and Wikipedia Xeon#Harpertown Harpertown spec table ...
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2answers
505 views

HP ProLiant DL360P G8 stuck on post

My HP ProLiant DL360P G8 started acting wierd after I started it up for the first time since last year. When it turns on it enters POST but gets stuck on "Memory and QPI Initialization Start" with ...
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1answer
112 views

How do I find the Dell controller and pdisk number given a serial number?

I need to blink a drive that I found out had SMART errors using smartmontools. I have omconfig installed and it looks like it can be used for blinking LEDs, but I don't know how to find the controller ...
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13 views

For a PHP Web Server which processor is better an i9 or a Xeon? [duplicate]

Which processor is better for a PHP web server with multiple (50 websites) small to medium size websites? Will use Cloudlinux for this and most of the websites are using PHP 5.6 and below and most ...
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1answer
65 views

Migrating tower servers to a rack sytem

We have a small office but I'm starting to see the benefit of a rack. We have: Windows Server as a DC and for file hosting. Linux machine for the phone communications. DVR for the cameras (rack form ...
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52 views

How Do I Analyse Results of Load Testing to Determine Hardware Requirements

When running load tests for an application server, the average results are as follows for 1.25 concurrent users. I calculated 1.25 concurrent users by taking a peak hour of visitors (5 visitors) for ...
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82 views

WHEA-Logger event 17, PCIe CorretableErrorStatus 0x40

Sometimes I can see WHEA-Logger event 17 in my system log. In the xml tab, I can see: /////////////////// VendorID 0x8086 DeviceID 0x2032 ClassCode 0x60400 DeviceSerialNumber 0x0 ... ... ...
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1answer
187 views

Missing openssl cipher-algorithms on specific VMs/Hoster

I'm trying to use AES-128-CBC-HMAC-SHA256 but this cipher-algorithm isn't available on a VM on a specific hosting provider. The OS, installed packages, Kernel, openssl version, and the like are the ...
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1answer
2k views

Collecting SFP+ attributes in Linux

I need to collect hw component inventory from physical systems running RHEL (6 and 7) and its derivatives. I need to collect the SFP+ attributes along with the rest of the components. I know I can ...
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1answer
58 views

stresslinux hanging on boot at “NMI watchdog enabled, takes one hw-pmu counter. #3”

I have a Gigabyte GA-z170N-WIFI (32GB memory in two 16GB modules) board that refuses to boot, When booting to real media (I.e. Ubuntu 18 live install CD or it's installed OS on SDD) it freezes at ...
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2answers
3k views

Do empty drive bays need to be filled?

I have a Dell R610 server, which has 6 2.5" drive bays. These all came empty. Generally, when I see pictures, all of the drive bays contain either drives or empty mounts. At first, I thought it would ...
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1answer
178 views

If I connect a SATA3 6Gbps SSD to a SAS2 6Gbps port using a breakout cable, will I get SATA3 speeds?

I have 2 SATA3 SSDs in my server, which are currently connected to SATA2 ports. If I wanted to get SATA3 speeds out of them instead, could I buy a SAS2 HBA and use an SFF-8087 to SATA breakout cable ...
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1answer
6k views

What kind of SATA connector is this?

My Supermicro motherboard has a "vertical S-SATA connector". The manual simply says "A vertical S-SATA connector, offers four S-SATA 3.0 connections (S-SATA 0-3)". I took a picture of it and it ...
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1answer
26 views

Are all LFF caddies compatible in a LFF slot?

Is it possible to use, let's say, some Chembro LFF caddies on a HP gen8 server or a Dell?
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26 views

How to read kernel messages from screan at boot time, in case boot crashes?

How can I read the messages of kernel page by page on the screan at the boot time ? I know the "dmesg" command or /var/log ... but my box crashes before booting could have finished. Is there any ...
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2answers
998 views

HP ProLiant DL380 G6 GPU installation

I have a Proliant DL380 G6 and I want to build a Graphics card into it. To be specific, it is a GTX 960 from Asus. The card When I now want to build it in, I am pretty shure I need a pcie slot riser, ...
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61 views

HP ML350 G6 No POST, All Lights Green, previosuly working with ILO2 connection

Greetings and salutations I have a working previously working server which I’ve used for 7 months with no downtime other than updates and OS upgrade, now I purchased another server and removed all ...

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