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Questions tagged [hardware]

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

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Does Network Card slow down when there are a lot requests

App1 makes 100k+ requests/minute. App2 on same PC/different CPU core, occasionally doing some requests. The bandwidth is 10Gb/s both NIC and network and is not a problem here. Would App2 experience a ...
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1 answer
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How to isolate devices on a subnetwork? [closed]

I am an electrical engineer working for a university. Our network infrastructure does not allow static IP. Only DHPC devices can be connected to the wired network. I am responsible for an industrial ...
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1 answer
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How can I know how many free RAM and CPU slots are on my hpe proliant dl380 gen10 host

I need help with knowing how much free RAM and CPU slots I have on my Proliant DL380 Gen10 server. Is there any software I can deploy to the server that enables me to know what specs do I have on the ...
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0 votes
1 answer
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Dell R815 power button does not turn off

I have powered my R815 on/off using DRAC. That works fine. But today I had some physical maintenance, and wanted to use the power button. I can turn on the server using the button, but I cannot turn ...
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If a hard drive caused "bus errors", should its SMART attributes show problems?

The machine shows "ATA bus errors" occasionally, and has to be rebooted: [24028.505239] ata1.00: exception Emask 0x10 SAct 0x0 SErr 0x48d0002 action 0xe frozen [24028.505249] ata1.00: ...
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What DDR3L PC4 means ( stands for )?

I read a bit and found that DDR3L is a low voltage ram (1.3 something ) and on the most of the boards i am usually seeing DDR3L PC3. But i stumble upon DDR3L PC4. What this PC4 stands for?
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HPE Server Memory - Will any model be fine?

I need to upgrade our HPE ProLiant DL380 Gen9 server with some more RAM. Before I buy anything I just wanted to confirm that it is okay to mix brands/models of memory as long as the type/frequency is ...
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How much does CPU and RAM matter for a files only sever? [duplicate]

Let's say I want to host 100000 tiny image and video files between 50kb - 2mb It's obvious that SSD would be better than HDD because of file access speed. But how much does CPU and RAM matter? What ...
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2 answers
61 views

Hardware errors in either CPU or RAM, what to do?

I have a server that, every now and then reports Hardware Errors to the OS, but otherwise runs without any noticeable issues. Today I found this while walking by the monitor attached to it. Can anyone ...
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111 views

IBM X3650 M3 occasional PCIe-related errors on reboot

Intermittently, this system will fail to POST and boot loop repeatedly (sometimes for hours) without making it past the BIOS screen. The errors appear to be PCIe related, but no additional PCIe cards ...
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271 views

Server stuck on "Intel Reference Code Execution"

Setup - Supermicro X10DRU-i+ motherboard, 2x Intel e5-2630v4: server started rebooting at random times had memory modules reseated and replaced, reseated CPUs reset CMOS, updated BIOS changed ...
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6 votes
2 answers
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Force one drbd node to StandAlone

I need to take a box that is part of 2-node DRBD cluster offline for hardware servicing. How do I force the primary (the other?) DRBD node to StandAlone so that I can turn the other node down? Just ...
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0 votes
1 answer
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What kind of slide rails do I need?

I need to install two servers from Supermicro in a 19" rack with round holes on the vertical rails. The Repon slides that came with the servers typically install in a 19" rack with square ...
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0 answers
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HP Proliant ml350 Gen9 don't start

I have an HP Proliant ML350 Gen9 server but it won't boot. It has two power supplies, its pilots turn green as soon as I plug in the power cable. The mother board pilot also turns green. On the front ...
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0 votes
1 answer
117 views

Connecting an SFP+ port to a QSFP28 switch

Background - I am working with a client trying to get a new Dell R540 server onto the client's network. They provided me with a single port on their Cisco Nexus 93240YC-FX2 Switch to connect the ...
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1 vote
1 answer
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Why does server throw Q Code 19 only when both CPUs installed?

I've got two identical intel CPUs in an Asus board with one stick of ram each. On power up, board immediately throws code 19 ("SB initialize before installed memory"). I've tested each CPU ...
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vcenter/vsphere health - how to monitor and find details

I see the below when i log in to a vCenter (7.0.1). Tried clicking around but cant really find any detailed info about this. So how do i find out more about this alert? how do people usually get a &...
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1 vote
0 answers
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Using (dual) ATS for dual PSU server?

There's two parts to my question: Does it make sense to hook up a dual PSU server to an ATS to speed up failover to the secondary circuit? If yes, does it make sense to use two separate ATSes to ...
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Proxmox gpu passthrough seen on the wrong machine

I have a very unique issue that might have a simple answer but I can't really find it anywhere. I currently have two nodes on my rack running proxmox. One is an old gaming PC that doesn't have IOMMU ...
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1 vote
1 answer
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Has anyone cloned an HDD for a Macintosh IIvx?

Where I work as a sysadmin, we have an old Macintosh IIvx that is the only one left in the world with an obscure program on it that will cost the company a ton of money if they can't use it. Well, the ...
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-1 votes
1 answer
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What are the recommended specs for deploying IIS on Windows Server 2019? [duplicate]

So I've been looking around google and other sites for recommended specs for an IIS server, but I haven't found any information that matches my simple use case. What would be the recommended ...
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1 answer
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Network interface naming

Hello I would like to know how the kernel is naming the network interfaces. I have a automated installation for Rhel with predefined network interface names for the dedicated hardware. I would like to ...
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1 vote
1 answer
101 views

Unplugged a working UPS by mistake. UPS made a bang noise and never turned on again

I unplugged my running UPS by mistake. The UPS was new so the batteries were fine, also the load was very low. Could it be that the breaking of the ground path lead to the destruction of the UPS? Now ...
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0 answers
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Locating "Timeout on hotplug command"

I have a set of machines identical in hardware, and almost identical in softare setup. But one of them is filling up /var/log/messages with: Jun 16 09:41:37 h0stname kernel: pciehp 10000:00:00.0:...
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-1 votes
2 answers
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Bunch of SAS disk and want to wipe all of them

I have 40 SAS disks. The model number is HUS156060VLS600. 600 GB 15K 3.5 inch SAS disk. It came from a customer. And the customer wants to wipe all data inside of SAS disks. Customer said the disk was ...
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-1 votes
1 answer
293 views

What are the risks of using old server hardware?

I bought a used Supermicro server (2011) to host my own web services. I installed Debian 10 Buster and setup the LAMP server. Ports 80 and 443 are only accessible from the internet behind NAT. The ...
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1 vote
2 answers
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Hardware token/UUID for authentication of software

Is there a unique hardware token or a UUID on every computer motherboard/BIOS that can be used to create a "strongly coupled" software? I am working on writing a proprietary software for a ...
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Odd pfSense Throughput Behaviors

I've got an old desktop that I've recently attempted to commission as a pfSense box. It's an ancient HP desktop with an AMD Athalon processor and about 2G of RAM, but it comes with gigabit ethernet (...
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1 answer
160 views

What to do with a Poweredge 1950 with a failed fan speed sensor? [closed]

For some reason (and it's possibly coincidentally suspicious that I needed to get a bit of extra slack on the SATA cable that is wrapped around/under fan module 1, so I gave it a firm pull..) my 1950 ...
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0 votes
1 answer
161 views

Required PSU Power for 12 HDD SATA 7200RPM (i have 20 A on my PSU peripheral channel)

I have a Tower server with today many hard drives and i would like to add hard drives for securing a raid group and also to extend storage capacity. Hardware spec before adding everything else : PSU :...
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-2 votes
1 answer
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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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3 answers
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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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0 votes
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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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0 answers
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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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-5 votes
4 answers
157 views

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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0 votes
1 answer
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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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1 vote
1 answer
613 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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2 votes
2 answers
1k views

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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0 answers
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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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0 votes
0 answers
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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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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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-2 votes
1 answer
314 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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1 vote
2 answers
67 views

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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2 votes
2 answers
140 views

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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0 votes
1 answer
860 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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-1 votes
1 answer
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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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1 vote
2 answers
6k 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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0 votes
0 answers
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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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1 vote
0 answers
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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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