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

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HP MICROSERVER GEN8 819185-421hard drives not recognized in the front bay

I bought that server and a SEAGATE ST1000DM003 1TB Hard drive. I've installed ubuntu 14.04 LTS on a SD card on the server. It seems that the server doesn't recognise the 1TB hard drive in the front ...
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0answers
14 views

Installing Centos 7 on HP N54L [on hold]

I already opened a thread here. But no one could help me. I have an HP Microserver N54L (Gen7). I started with Debian and switched to Scientific Linux 7.1, now I want to install Centos 7.2 After ...
6
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10answers
3k views

Do I need some kind of power conditioner or UPS?

In one of my boxen, both my power supply and network card died while in overnight hibernation - why? And: What must I do to appease the electricity Gods so that I don't lose more hardware? In ...
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6answers
2k views

Understanding NVMe storage and hardware requirements

I'm a bit confused about the recent developments in PCIe-based storage, particularly as it relates to the NVMe specification and its hardware compatibility. While I've worked extensively with SSDs in ...
9
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4answers
20k views

Controlling HP ProLiant DL380 G6/G7 fan speed

I'm having fan speeds and noise level issues from my most recent batch of HP ProLiant DL380 G7 servers. Most of the systems are nearly silent with low fan speeds (as reported by hplog -f). The ...
22
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3answers
2k views

What is this wiring panel and what are these Ethernet “ports?”

In my office's building there is a stone-age LAN rack with some Ethernet ports I've never seen before. I need to find the name of this ports, if they have one, and then buy some cables or adapters. ...
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3answers
12k views

Problems with DL380 Gen9 Smart Array

I recently bought a ProLiant DL380 Gen9, i've had some trouble getting it up and running...I ran the ProLiant SPP ISO to uprade firmwares but felt the system became less stable as a result, at one ...
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4answers
1k views

Can Running a Server's Redundant PSU on Different Circuits Damage It?

So I've been tasked to document and review the status of the UPSes for my current employer and identify any changes that need to be made. Generally easy stuff, however I came across a few units that ...
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0answers
30 views

Hardware choices for one Hyper-V host and 2 Server 2012 VMs? [closed]

Our old server setup used removable RDX disks which we'd rotate and take offsite. Unfortunately, our internet connection is too slow to perform a backup over the wire, while the RDX drive is too slow ...
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1answer
28 views

How to hook up a Supermicro JBOD expander to an HP DL380

I'm totally new to the subject of high-availability / distributed storage, and have to figure out a solution for a particular project. I am looking at using Windows Server 2012 R2 Storage Spaces to ...
4
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7answers
124 views

Machines for Warehouse Environment?

Here's a doozy. We have about 10 workstation clients in our warehouse. The units only need to run the web and a middleware windows client. Problem is, I'm running into problems with dust and heat ...
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1answer
23 views

Installing 2x16GB + 2x8GB ram in Dell R410?

In Dell's memory guide for the R410, they only give examples when using 16GB modules. So my question is, how do I install 2x16GB + 2x8GB modules when having 2 CPU's?
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3answers
2k views

Can “enterprise” drives be safely replaced by near/midline in some situations?

When specifying servers, like (I would assume) many engineers who aren't experts in storage, I'll generally play it safe (and perhaps be a slave to marketing) by standardising on a minimum of 10k SAS ...
11
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3answers
3k views

Why are Large Form Factor (LFF) disks still fairly prevalent?

Small Form Factor (SFF) / 2.5" disks seem to have become more popular than LFF disks now due to them being preferable over LFF disks in many scenarios (lower power consumption, higher density, etc). ...
2
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2answers
320 views

How to Power on Remote System Remotely?

Lot's of time I have received call form Developers/QA to Power on their office machine. And I am trying to do R&D on this, Searched over the internet and trying to use the suggested tool in LAN ...
5
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2answers
361 views

HP ProLiant DL365 G5 fan noise

I have an HP Proliant DL365, I know it is an old thing. But it works fine for what we have here. But the last time this thing makes a lot of noise and a few lights glow up: When I search in the ...
0
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1answer
46 views

How to dump usb stick with corrupt partition table?

Question at the bottom. When I insert the 8GB usb stick I get this in dmesg [168699.879019] usb 1-4: new high-speed USB device number 24 using ehci-pci [168699.994177] usb 1-4: New USB device found, ...
3
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2answers
332 views

ZFS 100TB hardware setup

We received a quote for the following server setup : Intel Xeon E5-2609V2 2 x WD RE 2TB SATA III 34 x WD RE 4TB SAS II 32 GB memory (ECC) LSI MegaRAID 9271-8i bulk, 8 x SATA III/SAS II internal ...
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0answers
9 views

Hardware required to setup WLAN access in large house [migrated]

A house has 3 floors, with thick floors and around 350m^2 total. The person responsible for setting up the electricity and networking in the house recommended to have the router and then 3 ZyXeL NWA ...
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0answers
5 views

Is Xeon E3-1230LV3 vendor locked? [migrated]

I've bought a Xeon E3-1230LV3 1.8 GHz CPU, and a Asus H97M Plus motherboard. When I power it up it makes three short beeps. I tested the motherboard with a different Core i7 and a Celeron, and both ...
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1answer
5k views

Removing raid metadata from drives

Normally when I have a drive which contains raid metadata e.g. from fakeraid or a hardware raid card I can get rid of it with: dmraid -r -E /dev/sdX Or if that doesnt work, doing a simple dd ...
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0answers
7 views

How to calculate Hardware requirements to send push notifications to GCM [duplicate]

I am gathering hardware requirements for system (up to 100M users) that would be firing Push notifications and nothing more. It would receive a signal to send message and then would select all users ...
3
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0answers
22 views

SAS expander or better controller?

In the past, servers I've put together have all had 8 or fewer disks, so I've not had to give the storage controller much thought - a standard controller like the P440ar (my experience is with HP) ...
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votes
1answer
46 views

How fast should a web server be? and why StackExchange uses all that hardware? [closed]

Okay so I have been making my very first website, I am using Apache server on Windows 10 Pro I can see my website is loading very fast, however, when I browse my website like anyone would do, I can ...
6
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3answers
15k views

What is the difference between a HBA card and a RAID card?

I thought I knew the difference between HBA and RAID. In my mind, HBA is offloading from the main motherboard/CPU and is simply JBOD... usually has an external SAS ports, whilst a RAID card does the ...
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2answers
222 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 ...
6
votes
4answers
1k views

Hardware checks for Dell R820 Servers through Nagios using SNMP

We use Nagios for monitoring. Is there a way to create hardware checks using SNMP MIB for R820 servers running ESXi5.x on them? Right now we are using this python plugin: current python plugin But ...
141
votes
6answers
21k views

Are SSD drives as reliable as mechanical drives (2013)?

SSD drives have been around for several years now. But the issue of reliability still comes up. I guess this is a follow up from this question posted 4 years ago, and last updated in 2011. It's now ...
0
votes
1answer
194 views

How to find a Chromebook's bluetooth address? [closed]

I want to quickly find the bluetooth device address (a.k.a. bluetooth address, BD_ADDR, bluetooth mac address) of a Chromebook laptop. So far, the only way I've found is slow and not always reliable ...
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0answers
35 views

Intel S3200SH sudden system freeze with Caps and Scroll Lock Blinking

I have a server based on Intel S3200SH board with Ubuntu Server 15.04 running on it. It ran 24/7 for a year and had no problems at all, but in a few recent days it started to freeze randomly when ...
2
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4answers
1k 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 ...
2
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9answers
6k views

Can a motherboard that supports multiple CPUs run with fewer CPUs than it supports?

I'm looking at building out a pretty beefy server, and I was wondering if I were to get a motherboard that supports multiple CPUs such as this one, can it run with only one or two CPUs temporarily? ...
3
votes
1answer
51 views

Decreased performance of Mysql after superior hardware upgrade

I am quite new to Percona/database servers and i dont know how to approach the following issue. Couple of days ago i upgraded the hardware of a percona cluster (3 nodes) servers with a much more ...
11
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2answers
5k views

Alternatives to Dell's mirrored SD card module for booting a small OS from flash?

Dell offers an add-on hardware card for some of their servers that provides a poor man's RAID1 between two SD cards (one card gets all the reads until it dies, writes are mirrored) for booting a ...
1
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2answers
162 views

Does any SATA drive work in any SATA port?

I was under the assumption (apart from restrictions due to old operating systems not being able to read large drives) that as long as a hard drive was of the same type as what is available for the ...
0
votes
1answer
18 views

Finding out which is the failed drive on Intel SRCASRB RAID Controller

There is very old server with Intel RAID SRCASRB Controller with 4 x WD5003ABYX-0 500GB drives connected to it in RAID5 array. One of those drives has failed and I want to replace it. Since server is ...
4
votes
2answers
8k views

How to mount an USB drive under VMWare ESXi 5.5?

I want to mount an USB drive to VMWare ESXi 5.5 host. The USB drive is visible with lsusb : Bus 01 Device 03: ID 154b:0095 PNY But not under /vmfs. Under /dev/disks/ I see many entries, but dunno ...
4
votes
6answers
8k views

MegaRAID JBOD substitute

It seems that certain MegaRAID chips don't support JBOD (unfortunately). I've read online that to make these controllers act as a pass-through, I should configure the disks in RAID0. What RAID0 ...
29
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2answers
3k views

HP plan to restrict access to ProLiant server firmware - consequences?

I've been a longtime advocate for HP ProLiant servers in my system environments. The platform has been the basis of my infrastructure designs across several industries for the past 12 years. The ...
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votes
1answer
956 views

How many hours of SMART power on hours use should a new hard drive have?

Purchased a new HGST hard drive. Using smartctl on OS X the new drive shows 71 hours of power on hours Does this make sense or is this a sign of a refurbished drive? I can't imagine why the ...
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0answers
19 views

Minimum hardware requirements for ElasticSearch in docker [duplicate]

I am developing a search application using elasticsearch and I would like to keep the development cost as low as possible. What are the minimum requirements for elasticsearch to run properly inside a ...
0
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1answer
149 views

S.M.A.R.T. error , 190 Airflow_Temperature_Cel , Is it a risk?

Please, I received this report by S.M.A.R.T Checking /dev/sdb.... Errors: Please note the following marginal Attributes: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED ...
2
votes
1answer
65 views

Side-effects of having different Memory (RAM) in a server? Example 1600 Mhz and 2100 Mhz [closed]

I know that you should always have the same memory clock speed and in best case even the same manufacturer meaning the same RAM Module. But what happens if you use for example the following setup: ...
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2answers
37 views

80 pin SCSI Raid Controller to SATA SSD's on IBM e336

I have an Old IBM e336 1U Sever. Currently the only Hard drive in the system is a Ultra160 SCSI drive. This drive is old and making some noises indicating that its life is going to end soon. Though ...
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0answers
15 views

Is my disk gone?

My linux workstation just recently crashed. It now boots into a login screen and from there, if I log in, it logs me back out. Also, the resolution is much lower than it used to be. I think that it ...
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0answers
34 views

USB Barcode scanners Redirect order RDP on windows 2008r2

I'm trying to get barcode scanners (usb, Motorola LS3578 is my test model) so re-direct over RDP, but i cant seem to get very far. The scanner works ok locally on the client, if i plug it into the ...
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2answers
308 views

R610 PERC 6iR - Incompatible with SATA

I purchased a couple R610 servers which has been a constant source of frustration lately. I got a heck of a deal on them with a single 2.93 Ghz processor and 96GB RAM, so I cannibalized one and got a ...
0
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1answer
155 views

HP DL360 G7 4K native sector disk size compatible?

I have a HP DL360 G7 server with a P410i drive controller which don't accept 4K native sector size disks (Seagate ST2000NX0263). LED on drive bay is red. Is there any controller (Adaptec, LSI, Intel ...
2
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4answers
3k views

IBM Xseries 3400 only working while power button holding pressed

I have an IBM xSeries x3400 Intel Xeon server which only works while someone holds in the power button. My server stopped working and I sent it to IBM Service. After a few hours they told me I could ...
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1answer
1k views

ECC CE (Correctable Error) occuring every 5 minutes exactly

On one of our computing nodes I am getting ECC CE (correctable errors). What is a little bit peculiar about is is that errors are not massive, just a single occurrence exactly every 5 minutes. ...