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

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1answer
975 views

Is Dell Poweredge 2950 faster than Dell Poweredge R820? [closed]

I have a 10 year old Dell Poweredge 2950 that will be replaced with a Dell Poweredge R820. Both of these machines are set up as a Virtual Machine Host Running Hyper-V. Both Operating Systems are ...
0
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1answer
152 views

How to determine VMware ESX server requirements for n VMs?

I am going to buy a high-end server for my department's daily usage. On this server, I am planning to launch 2 DB servers, 2 Application Servers and around 10 ordinary development PCs on the VMware ...
0
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0answers
72 views

False flag multibit errors on highest populated DIMM socket on second CPU of Sunfire x2200. Faulty CPU or faulty motherboard?

I'm testing 2GB ECC Registered DIMMs in a Sunfire x2200. Recently the system event log (SEL) began logging Multibit Errors on the highest populated DIMM socket on CPU1. With 8 DIMMs on CPU1, the SEL ...
0
votes
1answer
381 views

Benefit of Dell PERC Card for SSD

I bought a dell workstation for using with mysql and python. It came with a single HD and PERC 310 controller. I then installed the OS on an ssd instead to speed things up. However, there seems to ...
4
votes
3answers
4k views

How to diagnose repeated “Starting up database '<dbname>'”

I have a SQL 2008 server which is predominantly used as a development server, in the last two weeks it has been having occasional "fits", I have isolated the cause of these fits as CHECKDB being run ...
0
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1answer
197 views

PCI Extender and 1GB Ethernet Performance

One of my server has 2 PCI slots which has already plugged with 1GB Ethernet cards. I want to add two more 1GB NIC to this server. I've found on ebay this pci extender. I want to ask, because I ...
4
votes
1answer
729 views

DDR3 10600 memory running at 533mhz

I bought a second-hand HP ProLiant DL160 G6 a year ago with 48GB configured in it. I discovered checking with cpu-z and doublechecked with speccy the memory runs at only 533Mhz. I checked the ...
0
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2answers
162 views

Building vs buying a server for an academic lab [duplicate]

I'm looking for advice on the classic build vs buy question. We need a new linux server to run Matlab computation on in our lab (academic). Matlab parallel computing toolbox licence allows up to 12 ...
4
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8answers
293 views

Buy or Build systems? [duplicate]

Should I be buying workstations and servers from Dell/HP or build them myself? What exactly are we paying these companies extra for?
47
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7answers
8k views

Why do we still use power supplies on datacenter servers?

Computers mainly need three voltages to work : +12V, +5V and +3,3V, all of them are DC. Why can't we just have a few (for redundancy) big power supply providing these three voltages to the entire ...
7
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2answers
6k views

Why are “sectors per track” still relevant on a modern OS with modern drives?

I am building out a new machine and the raid controller is asking me for sectors per track. I haven't had to deal with disk math in a long time (1998?), and I can't find anything that pertains to ...
1
vote
1answer
61 views

If I connect an interface which is not set up in operation system to a switch, should the link LED light up?

Patch-cords are checked with a tester and they are OK. LEDs are not burning neither on switch ports, nor on the blades' interfaces. Interfaces on blades are NOT set up, so the question is: should they ...
0
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1answer
93 views

Is it possible to make KVR800D2D4P6 memory work on Intel DQ45CB

We have a self-made Intel DQ45CB based server/workstation in a server case in a datacenter. The system works just fine for it's purposes, but would do perfectly with a small memory upgrade. I've ...
3
votes
0answers
44 views

is there a better PROCESS for picking office printers? [closed]

I run a small Mac/Linux/Android network and finding options for our new printer has been difficult. We have a few criteria, and as you all know, the market is pretty convoluted, with long feature ...
3
votes
8answers
20k views

HP ProLiant DL180 G6 Fan Noise?

Recently i did bought an HP ProLiant DL180 G6 Everything is OK except fan noise , it's too loud. I did some research but found nothing useful , I just wanted to know if there is anything I can do ...
3
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2answers
1k views

Intel Xeon E7-4807 vs Intel Xeon X5690

We replaced our main line of business server with a new one. The old server had dual Xeon X5690s in it (2 generation old chip), the new server has quad Xeon E7-4807s. We expect processor performance ...
-4
votes
2answers
292 views

Stacking Servers on top of each other without a using a rack [closed]

I have ten 19" servers each with 4 hard drives and an average 160W usage. For a 2 month test run of a service i want to put them just on a table without purchasing a rack. Maybe in two stacks 5 each. ...
10
votes
4answers
478 views

How Serviceable are Tape Drives?

I'm contemplating an auto-loading tape drive as part of a backup strategy. This would be my first experience with tape backup. The cost-effectiveness of tape drives seems to depend on the assumption ...
0
votes
1answer
763 views

Minimum Processor Requirements to set up Openstack on a Laptop/Desktop(not for Devstack setup)

I am planning to do a POC and setting up OpenStack in nonCommercial setup.I do not want to go with Devstack.I am confused as to how much is the minimum processor requirement if i plan to setup ...
8
votes
2answers
11k views

Can I mix Low Voltage (LV) ram wiith Regular Voltage RAM?

I heard from our vendor that it is okay to put Low Voltage ram with regular voltage RAM. They said all that would happen is that the LV RAM would ramp up to match the 1.5v ram (in other words, the ram ...
2
votes
1answer
997 views

HP ProLiant DL360p Gen8 how to choose correct heatsink? [closed]

We purchased a new HP Proliant DL360 gen8 server (670640-425) (HP DL360p Gen8 E5-2620 Base EU) at the same time we purchased the cpu/heat-sink package for a 2nd CPU (654782-B21) (HP DL360p Gen8 ...
0
votes
1answer
1k views

Difference of HP network adapter types?

HP have a special type of cards they call FlexibleLOM, and I can't figure out what the differences are of the following HP Ethernet 10Gb 2-port 530FLR-SFP+ Adapter HP Ethernet 10Gb 2-port ...
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1answer
133 views

Consumer level motherboards that play nicely with large numbers of drives [closed]

I currently have a system with 25 hard drives - 24 for data and one for OS. This machine is built on a budget, featuring a cheap Gigabyte motherboard (GA-990FXA-D3), a four port LSI SAS controller, a ...
2
votes
2answers
603 views

RAID 0 InnoDB speed - Comparing 8 x 7,200 RPM drives or 4 x 15,000 RPM drives

I am planning to set up a RAID array for scratch space use in a computational server (16 cores, 128 GB RAM). The users will routinely be creating large (500GB) MySQL InnoDB databases and storing these ...
2
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1answer
9k views

ESXi host losing connection to vCenter

I'm having a very odd issue with a single ESXI host. I have 2 identical hosts, core i3, 6 nics, 16g ram. 4 of the nics are used for Management, vmotion, vm network, all on different vlans. They ...
2
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3answers
2k views

Windows Server TCP sockets random disconnect: how to reproduce?

We rented 10 Windows servers from a large provider in Europe. They all work as expected. One server suddenly crashed and customer care found that both disks were broken. They replaced disks and also ...
0
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1answer
655 views

Intel SSB temperature sensor

I have an Intel server motherboard that is reporting an issue with the SSB temperature sensor. I have searched for the acronym but cannot find a definition. What does SSB stand for?
4
votes
2answers
6k views

ECC errors in L3 cache - critical or not?

On a linux server (8x Quad-Core AMD 8378), I'm getting the following errors: [Hardware Error]: MC4_STATUS[-|CE|MiscV|-|AddrV|CECC]: 0x9c294c00001d018b [Hardware Error]: Northbridge Error (node 4): ...
4
votes
2answers
969 views

Difference between SAS multilane, direct-attached HDD and expander backplane?

What's the difference between multilane, direct-attached HDD and expander for SAS backplanes? Supermicro chassis description page Direct attached HDD backplane (TQ version), multilane ...
2
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2answers
173 views

Small computer that can run on power provided from CAT5e or USB? [closed]

I am wondering if such a thing exists. I am looking for a small computer (board, etc..) that I can literally just put a usb drive on in order to boot from, and then it get its power from USB or CAT5e. ...
4
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0answers
758 views

Adaptec pm80xx Driver Drops Drives Randomly

I'm building a ZFS NAS using an Adaptec ASA-71605H HBA on Ubuntu 12.04.4. Modern Linux kernels ship with the open-source version of the required pm80xx kernel module. Adaptec provides a driver for ...
21
votes
2answers
1k views

Protecting Servers from Dust

I have a single server rack (31 of the 42U occupied) in a small (about 10'x10') basement room in a building that is seeing some light renovation... nothing huge, but some non-load-bearing-walls going ...
4
votes
1answer
146 views

Can a properly wired reset switch fail to reboot a frozen system?

Context: We rent unmanaged server hardware. The hoster's web dashboard offers a "automatic hardware reset" command (next to a "send ctrl-alt-del" command), but it fails to reboot the machine when the ...
11
votes
2answers
763 views

Linux kernel detecting wrong processor frequency

After a cold boot of a 6.0.8 Debian server (HP ProLiant), ntpd played havoc with system time: offset and jitter with respect to the usual and reliable reference time servers growing without limit. ...
4
votes
2answers
5k views

HP ProLiant DL360 G6 reporting missing fan

I have several refurbished HP ProLiant DL360 G6 servers and several of the systems are reporting fan failures - possibly incorrectly - on fan #2. When running: hpasmcli -s 'SHOW FANS' I get the ...
2
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0answers
924 views

HP SNMP Traps signalled every 10 seconds for a NIC

I'm trying to setup SNMP traps on my HP DL160 G6 (Xenserver) to notify me whenever I have issues with the server. Following suggestions from this serverfault post, I've installed the HP SNMP agents ...
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1answer
190 views

Implementing hardware virtualization for custom hardware

When using QEMU/KVM there are certain network adapters that are supported and emulated. If one wanted to emulate the guest OS's original network adapter (e.g - a Broadcom interface that was present on ...
-1
votes
2answers
833 views

No advantage from SSD boot drive for 24/7 server? [closed]

Since my OS and applications are loaded into memory upon boot, isn't there no advantage from having my OS on an SSD boot drive for a server that is kept up 24/7? I know there are several assumptions ...
36
votes
1answer
21k views

HP ProLiant DL360 G7 hangs at “Power and Thermal Calibration” screen

I have a new HP ProLiant DL360 G7 system that is exhibiting a difficult-to-reproduce issue. The server randomly hangs at the "Power and Thermal Calibration in Progress..." screen during the POST ...
0
votes
3answers
99 views

Development DB server with dedicated hardware [duplicate]

I'm planning to move one of my development database servers to its own machine. I'm currently running it on my laptop, which is not very convenient. DB Servel is PostgreSQL 9.0.1, OS is Gentoo. ...
10
votes
1answer
987 views

What is the term for this piece of hardware?

This is a silly question but what is the "official" term for what is carrying this hard drive? I need to know if I can purchase it separately from the hard drive.
9
votes
3answers
640 views

General Advice about an archive solution. ~15tb and growing.

I need a better storage and archive system for my small business's files. Specifically the files are completed video projects. Beyond time and cost limitations what is holding me back is I don't ...
0
votes
0answers
381 views

adding a 2nd network card to linux

I'm on linux mint. I've just installed a PCIe gigabit network card (from eBay!) into my linux machine. I've already had to follow this guy's instructions to get the onboard NIC working correctly. I ...
0
votes
1answer
117 views

Where can one find good documentation describing memory-rank “sparing”?

Where can I find good documentation describing memory-rank "sparing" (for computer-hardware memory-protection configurations)? I'm seeking to clarify what benefits it provides and how it's typically ...
1
vote
1answer
804 views

Dynamics CRM 2013 hardware requirements [duplicate]

What is the estimated hardware requirements for a Dynamics CRM Implementation that will be accessed by about 30 users with about 200K to 500K contact data? The implementation most likely will use ...
2
votes
2answers
593 views

SAS disk and intel motherboard

What kind of Cable shall I use to connect [ http://www.amazon.com/SAS-Enterprise-Hard-Drive-WD1001FYYG/dp/B0090UELTW ] and server board: http://ark.intel.com/products/56334/intel-server-board-s2600cp4 ...
1
vote
1answer
751 views

Fastest server ram configuration for 48GB?

I have an HP ProLiant DL160G6 server, with 2 CPU's and 48GB ram, with following modules: 4x 8GB Module - DDR3 1066MHz (KTH-PL310Q8/8G) 4x 4GB Module - DDR3 1333MHz (KTH-PL3138/4G) I'm re-purposing ...
0
votes
1answer
3k views

Configure raid for IBM x3200 M2

I have a x3200 server and I have planing to use raid 1 for mirroring Sata Hardisk . I am searching on google to find raid server manager for x3200 , but no luck . Is there another way to configure ...
23
votes
4answers
1k views

What to look for in a datacentre ethernet switch

This is a Canonical Question about choosing a network switch for a datacentre When shopping for a networking switch that's going to be going into the top of a datacentre rack, what specific ...
2
votes
1answer
3k views

Can't find fan speed setting on Supermicro X9DRW

I have one Supermicro server with a X9DRW board, BIOS v1.0a, that does not seem to have any way of controlling fan speed. I've looked through the entire BIOS, including the usual location of ...