Questions tagged [hardware]

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

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18 views

Searching for kind of tray to add HDDs to my computer case [migrated]

I have a Zalman Desktop Case and I want to add a new harddisk. In the case is a disk cage and I need some kind of tray or rails to attach the HDD in the cage. I searched a lot on the internet but can'...
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Why are random reads on NVME SSD slower than sequential reads?

NVME flash SSDs can operate on data in parallel. So why is it that random IO is still slower than sequential IO on SSDs?
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Need help connecting Old USB Harmon/Kardon SoundSticks and new 2021 Dell XPS laptop [migrated]

I have some old USB Harmon Kardon SoundSticks that work fine; they were tested with other Windows and Mac laptops, a Windows PC, and even my Android phone (with a USB adapter)! I have a new Dell XPS ...
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1answer
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Does this SMART result indicate brand new drive? [closed]

Bought a Seagate Exos 7e drive from an OEM reseller (no Seagate warranty). Are these SMART results valid for a drive that is supposed to be brand new?
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Best solution to connect 11 3.5" SATA disks (HDD) to Linux in term of hardware

I would like to connect 11 SATA 3.5" (majors 4TB some 3TB) HDD to the same processing unit (same Linux system). I plan to use debian on amd64. Use would be a cloud storage server. I didn't find ...
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Potential Hardware Failure?

This may not be the place to ask, so feel free to point me in the right direction and delete this if need be. I've put together two Desktops before now, and am now attempting to put together my first ...
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20 views

Server not starting, after adding graphisc card

First of all, I want to clarify, that I pretty new to server topics. My server runs on normal ubuntu. I bought a Nvidia Quadro k4000. I built it into the server and connected the PCIe Power cable. - ...
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4answers
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What is 25gb ethernet good for? [closed]

I've come across listings for 25gb NIC cards online, from various companies including Intel, Mellanox, and Broadcom. Can someone explain what these are for? Clearly the bandwidth these cards can ...
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1answer
25 views

10 NICs in 1U box - possible?

I am looking for a device with 10 NICs in one 1U box. The CPU can be anything even a microcontroller as long as it can process TCP packets. I would prefer a sort of Linux on it but is open to other ...
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1answer
87 views

Is there a list of linux compatible RAID/HBA cards?

I purchased an LSI Logic HW RAID controller on ebay without doing much research and discovered the hell of 10-year old proprietary drivers and command line tools with no documentation. I'd like to ...
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How to understand the eeprom dump from ethtool -m for an SFP+?

I have executed ethtool -m on one of the SFPs on a server and now I am trying to interpret it. I get this printout, Identifier : 0x03 (SFP) Extended identifier ...
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dmesg flooded with “ataXX.00: failed to IDENTIFY” for mystery drive

My dmesg is flooded with the following every ~second (note, the following repeat forever; but the exact sequence appears to vary): ata15.00: failed to IDENTIFY (I/O error, err_mask=0x100) ata15: ...
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My system won't boot after reboot

I recently assembled the following system: MOBO: TRX40 AORUS PRO WIFI (1.0) GPUs: 2x EVGA FTW3 ULTRA GAMING RTX 3090 CPU: Threadripper 3990x OS: Ubuntu Server 20.04 RAM: Corsair ...
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Can use Desktop SSD drives for servers front panel bays on SFF

Can I use Desktop SSD drives (example : WD SSD Blue 1TB) into a SFF server bay (Example HP DL360) Exactly : instead of buying a Enterprise SFF SSD drive , buy 16 x of Desktop grade SSD and install it ...
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D-Link DGS-1210-28 factory reset

Have a problem with D-Link dgs-1210-28. Can't get into web interface after reset. I'm holding reset button about 20 sec (until power indicator blinking). After that I'm able to ping default switch IP -...
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Sas HBA failing on most reboots but no failures while running

I recently treated myself to a new server. The case has 2 x sas backplanes with 4 x hot swap bays on each. I've been running proxmox for the month or so since I've put it together, initally using one ...
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USB 3.1 Gen II - if there are two attached Gen I devices, will it allocate 5Gbps to each?

Most USB PCIe add-on cards are single chipset and the ports share the available bandwidth. Theoretically, if I have two USB 3.1 Gen I devices that each can saturate the 5Gbps bandwidth, attaching them ...
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1answer
172 views

Why should I buy a server CPU rather than a standard one? [closed]

I'd like to research the possibilities of migrating some of our servers to newer hardware. Since I was only building personal/gaming PCs up until now, I'm beginning to realise I don't know much about ...
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Poweredge R410 top panel stuck

I recently picked up a used poweredge r410 and I went to pull open the panel, but even though I unlocked the case lock it would not slide at all. I've tried pushing down on the lock and it still does ...
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2answers
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Tool to maintain IBM x3650 - get info from faulty HW

I am have a server IBM x3650 M4 running XenServer and Windows guest. The server have a problem with harddrive, yellow exclamation mark blinking. I am able to turn off the server go to BIOS and get ...
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2answers
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Replacing HP ML30 G10 Processor

Dears, I currently have the HPE ML30 G10 with Intel® Xeon® E-2124 processor installed in it. I wonder if it is possible to replace the processor with Intel® Xeon® E-2288G or Intel® Xeon® E-2236 ...
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389 views

Understanding smartd

I have two servers that are set up exactly the same way (same SSD's, RAM etc.). They both have ESXI running on them. One of the boxes had a quest host that had a lot of complaints about writing to the ...
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1answer
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What is this 4-pin-power probe-like thing?

On the wire, it says (approximately) TSW1104 4305. The power plug looks like a standard desktop 4-pin. I found it in a box of random components. I've no idea where or when I got it, and my attempts to ...
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2k views

Control or reduce fan speed of Dell R820

I recently bought Dell R820 from Amazon. It has 192gb of RAM, 4x Xeon CPUs but Dell Idrac is not working anymore after update firmware from OS. Fan's go full blast and it's very noisy. I tried all ...
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Linux software raid slow until reboot

I am running an debian 10 machine with 3 4tb hdd drives. Each drive has a 1GB partition for a raid1 for the boot and the rest of the disk is configured as a raid 5 for lvm. After a while of running I ...
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Planned reboot of Hyper-V guest caused unplanned Hyper-V host reboot

System: Windows Server 2016 Standard, fully patched, both host and guest(s). A strange thing happened today when I rebooted one of my Hyper-V guests (by RDP-ing to the guest and manually triggering a ...
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1answer
129 views

What are mounted servers? [closed]

What are mounted servers and are there any other types of servers too? What are different configuration? I have heard about RAID. Is this the way multiple servers are connected to form a single server ...
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363 views

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
122 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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1answer
27 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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1answer
103 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
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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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1answer
327 views

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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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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1answer
99 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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1answer
219 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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37 views

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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1answer
33 views

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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1answer
300 views

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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1answer
373 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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1answer
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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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1answer
23 views

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
45 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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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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1answer
273 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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1answer
91 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
33 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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13answers
27k 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
2k 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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