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Questions tagged [hardware]

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

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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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1answer
35 views

Manually control fans on an HP Proliant server

I have an HP ProLiant DL380 Gen 5 server. I want to adjust the "fan curve" to allow the fans to be switched off while the CPU and the RAM are cool enough. Is this even possible, and if so how would ...
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Is it possible to check drives SMART attributes from a USB/eSATA enclosure?

I use USB external drives on a daily basis and I would like to be able to check on their integrity. I recently happened to discover I was unable to read SMART attributes from them. I wonder if there ...
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What could be Wordpress CPU requirements compared to its RAM requirements? [duplicate]

Im not asking how much RAM/CPU my website(s) will need to run, but if it is possible to determine a relation between CPU and RAM. Is there a relation? When I want more CPU and when I want more RAM to ...
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41 views

Examine contents of unused space on the HDD

When using managed dedicated services, either virtual or physical, where you're presented with complete control to an operating system installed on some piece of hardware you don't have physical ...
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1answer
28 views

Can I replace one Intel Xeon e5-2603v3 with dual E5-2690v4 on HPE server?

I've got an entry level HPE SRV 778640R-B21 which supports dual CPU but comes with an E5-2603v3 (LGA2011-3 / DDR4). It has also 550W power supply. I want to remove the current cpu and add a pair of ...
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1answer
34 views

How to use more than 3 hardrives with Supermicro X9DRT-HF board?

I got a 4 node supermicro 2U unit which has 12 how swapable caddies, 3 for each node. The problem is that I want to connect at least 4 if not even 6 drives to a single node. The BIOS reports 3*2 ...
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1answer
61 views

Why same disk model but different capacity?

I'm trying to replace an old disk on a JBOD that I inherited. I bought exactly the same model but it seems it has a different capacity (resulting from different number of disk sectors), preventing me ...
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UPS for HP ProLiant DL180 G6

I inherited HP ProLiant DL180 G6 model supposed TB used for some additional (non mission-critical) work and need to buy the UPS for it. I've read that PSUs for HP servers tolerate pretty much only the ...
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hdd vs ssd for php/mysql dedicated server [duplicate]

I'm migrating a server and I have to choose between: SoftRaid 2x4TB sata SoftRaid 2x450GB SSD nvme The server will basically run nginx+php7.2+mysql8 The response time is very important for our ...
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1answer
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Server not powering on after upgraded to Intel Xeon E5-2695 v2 [duplicate]

Have a ProLiant DL360p Gen8. Old CPUs were E5-2670. Upgraded HP latest ROM Server does not power on any more. See amber LED light on the CPU in the Systems Insight Display. As far as I know this CPU ...
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2answers
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PowerEdge T610 H700 controller upgrade

I have a PowerEdge T610 server with Perc H700 RAID controller. I wanna use the controller for non-raid, but I read some posts and the H700 controller doesn't support the non-raid operation. The ...
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Figuring out how much VMWare hardware capacity I need during the planning phase [duplicate]

So, I know there are a lot of great tools for analyzing current resource utilization and so on, but that's not what I'm looking for. What I'm trying to figure out is the best way to plan how much ...
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Hardware for virtualization [duplicate]

I need to choose appropriate hardware for virtualize with vmware - 1 windows server 2016 (active directory, wsus, centralized antivirus software...) - 1 windows server 2008 (run 2 server software) - 1 ...
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1answer
120 views

Does the MSI H55M-E33 motherboard support the xeon L3426?

While searching for this myself I found there were quite some other people online searching for the same answer, but nobody replied with their results. As such, I found it only fair since I have been ...
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What PSU form-factor do I need?

So I finally got my Fantec SRC-2080x07 2U server chassis replacement. Only to find out that the Be Quiet TFX Power 2 300W Gold PSU that I ordered, is too small to fit. Here's a picture of the PSU ...
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1answer
314 views

DL580 G7 not booting / posting

I have two DL580 G7 and I cannot get any of these to boot. What happens is that the internal health LED flashes red and it displays all four CPU-LEDs in amber. There is no post code, exactly nothing ...
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NFV-grade server hardware configuration [duplicate]

Interested to know how to spec my servers for high performance networking applications and to perform real-time processing of many packets. (servers to be equipped with 100Gb/s NICs) Currently I'm ...
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1answer
47 views

What is a 4x 10gbe QSFP-QSFP cable?

I was looking for QSFP cables on Ebay and came across a Brocade 58-0000033-01 marked as 4x 10GE even though it has one QSFP connector on each end. I don't understand what this cable is for, will it ...
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1answer
36 views

Hardware Checks after Air Conditioning Failure

We had an overnight air conditioning failure. We discovered that the temperature in the server room had reached about 110-115°F (43-46°C). We powered off everything that hadn't already and had the A/C ...
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1answer
60 views

Why does the server chassis backplane have multiple SFF8087 connectors?

On the backplane, there are 5x SFF8087 connectors on a 20x SATA disk setup. Why are there 5x connectors? Do all 5x need to be connected to the motherboard via a SAS Controller, or only one? And does ...
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Does it make sense to connect a redundant power supply to a C14 splitter?

Recently visiting a small data room, I noticed that redundant power supplies of a server are connected through a C14 splitter which, in turn, is connected to a single socket of a UPS. I told the ...
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1answer
135 views

Detect the hard drive sector for 4k vs 512

Some of the hard drive in Virtual machines moved from legacy sector size of 512 bytes to a larger, more efficient sector size of 4096 bytes, generally referred to as 4K sectors. Operating system ...
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1answer
48 views

SSDs same bandwidth as HDDs now? (2018)

I am looking at different storage options for a new server. I've noticed that both HDDs and SSDs claim 6Gb/s throughput: https://www.newegg.com/Product/Product.aspx?item=N82E16822232558 https://www....
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What should I need to do after a CPU/IGP change in Ubuntu 18.04?

On the next week I'd like to change my cpu from an Intel G3930 to G4600. What should I need to do and why? Can I change without reinstall anything? Linux can handle this automatic? Do I need for ...
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1answer
47 views

Can a standard PCIe card fit on top of VLP (Very Low Profile) memory?

I am dealing with a motherboard https://b2b.gigabyte.com/Server-Motherboard/MZ31-AR0-rev-1x#ov where multiple memory slots are situated right in front of several PCIe slots and hence a full-length ...
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1answer
32 views

Where to get Hardware info about Routers

I have been trying to get information about the hardware itself from Cisco routers but I was unable to find that on Google. It seems weird I cant find that info neither on Cisco page itself. My ...
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279 views

DHCP not working on RTL8111 NIC (DHCP Offer not arriving at receiver)

I'm experiencing some strange behaviour with a Dual Gigabit Ethernet NIC; I've setup a computer which has multiple network interfaces to connect some industrial cameras and setup a DHCP Server (isc-...
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2answers
29 views

Why am I losing all of my drives when one tray is inserted?

I recently moved my Dell C2100 and when I went to power it up, none of the drives came on (no LED activity at all). After some diagnosing, I noticed one of the trays (no drive) had a solid red LED. I ...
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1answer
36 views

What can a RAM failure provoke on a cluster of computation units

I am interested in some technical clues on how a failure on a RAM that is shared between multiple computation units (this could be virtual machines managed by hypervisor or two (or more) OSes running ...
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1answer
376 views

Optimal memory configuration on Dell R610 - 4 x 4GB and 2 x 8GB?

I'm trying to install memory into a Dell R610 server, and am honestly at wit's end. The DIMMS I have are: 4 x 4GB DDR3 2 x 8GB DDR3 I tried putting in the 4 x 4GB sticks in A1, A2, B1, B2 and the 2 ...
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1answer
72 views

HP DL360 G5. Doesn't start if power cable plugged in PSU1

I bought an used server. When I plugged in a first PSU (the one near sidewall) a power cable, some fans turned on, a led on the front panel light orange, on mobo green leds works. When I press a power ...
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1answer
22 views

What hardware is important for an image (picture) hosting server. Should handle lots of http requests [duplicate]

I'm setting up a server that is being used as a hosting server that gets about 500 - 1000 new images per day. Most images are in jpg format, around 200kb - 2mb big. These images are being embedded ...
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2answers
37 views

Power server when power is on (No Bios access)

I have 3 servers and one is old hardware. I have frequent power outage due a Kw limit. I know there is an option in the BIOS to power on a machine when there is power. 2 servers does have this AC ...
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1answer
22 views

Intel 1U R1304BB4DC fails to boot

I own an Intel 1U R1304BB4DC server, with Windows Server 2013 on it. After installing latest Windows Updates I was forced to reboot it. Since then I am not able to boot to my OS + I get no output at ...
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1answer
88 views

VGA monitor blinks with KVM

Tried using several computers with a KVM switch that uses the 25th port on the VGA connection for USB (for the keyboard and mouse - StarTech.com SV1631DUSBUK). Manufacture says the cable they use to ...
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1answer
97 views

Consumer grade UPS – safely provide more outlets/extensions for wall warts?

I am helping a small business redo their networking, and one of the items I recommended was an APC BR1500MS. Their setup would be Wall outlet (standard "home" outlet) -> UPS -> UPS Battery backes ...
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1answer
39 views

How quickly do NVRAM-N DIMM's restore their information?

New servers have NVRAM-N DIMM's which allow for their information to be saved to flash when the system loses power. I've read that it takes about a minute to save the information and the built in ...
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1answer
433 views

Why are NVRAM-N DIMMs Reliant on RDIMMs within Dell PowerEdge Servers?

Hardware questions! Watching some tech reviews about the newest and bluest Dell Poweredge servers and I noticed in this link that NVDIMM's for the new Dell Poweredge 740XD servers require R-DIMM's to ...
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1answer
128 views

Intel Scalable Processors

this should be a pretty straight forward question but might come out as ambiguous (might also be the wrong place to ask). I've been researching the newest and bluest Dell Poweredge and HPE server ...
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2answers
2k views

What does it mean, if all LEDs of an LTO-6 drive are flashing? [closed]

All LEDs of an half height LTO-6 drive are flashing with ~ 4 Hz. An LTO-5 tape is still inside, the drive does not react on commands, the flashing continues after a power cycle. I could not find the ...
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1answer
3k views

What is this column in /proc/interrupts?

Can someone assist me in analyzing the data in this output from my /proc/interrupts file? $ cat /proc/interrupts CPU0 CPU1 0: 22 0 IR-IO-APIC 2-edge timer ...
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1answer
188 views

What factors affect the speed of a VPN connection?

What hardware/software factors affect the speed of a VPN connection between two computers (1 Gbps network cards) on a lan with just a 1 Gbps switch between them ? More vague : Is it possible to ...
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2answers
190 views

Updating broadcom NIC drivers on a Dell Poweredge R430

I've got a couple of Dell Poweredge R430 hypervisors that have Broadcom NetXtreme Gigabit Ethernet NIC's. I've never updated the drivers on these NIC's away from those which the OS installed... They ...
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1answer
78 views

What replaced vol_id in Debian 9.x “stretch”?

I was reading this link and tried the vol_id command. From my research, it was part of the udev package, and I see it was removed long ago. What replaced vol_id in Debian 9.x "stretch"? As a bonus ...
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2answers
152 views

Identifying the physical drive on a dell PowerEdge R320

We have a PowerEdge R320 with four drives and the front indicator panel is saying there is a fault on 'Bay 1 Drive 2'. There is an orange indicator blinking on the third drive from the left. I'm ...
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1answer
713 views

Hardware requirement for video serving to 1000 concurrent users [duplicate]

Can someone help us, we are looking to roll out a video on demand platform to provide internal staff the ability to view content. we will need to stream to 1000 users, the video files will be 720p ...
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1answer
461 views

MTTF, MTBF, MTBR and MTBF for HP ProLiant Gen9

I have been looking into MTTF, MTBF, MTBR and MTBF for out HP Gen9 servers running in our production environment. Root of my question, should be worried or not. I cannot seem to get any good data as ...
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2answers
1k views

Why do servers boot up so slow in general?

Why do servers in general boot so slow? If there is 1-2 TByte RAM in them, it could take 10-20-30-40 minutes to cold boot a server..Why is that? Isn't memory extreme fast in average? Why do the "...
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2answers
871 views

Are Dell PERC H200 H700 RAID cards supported by “.deb” based Linux distros?

For a Dell PowerEdge T310 that I haven't yet, I was wondering if its RAID cards are supported by distributions using ".deb" packages like Debian or Ubuntu. On Dell's web site, I could only find ...