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

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0answers
16 views

What are the potential pitfalls of using a L3 switch as a router at an IX? [on hold]

TL;DR: Is there any direct pitfalls to using a switch as a BGP router? We obviously have routers for a reason, so what would be some comparison points between the switch and a proper router? What ...
3
votes
2answers
65 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 ...
1
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4answers
9k views

HP Compaq 8200 Elite SFF won't boot from USB drive

Can't get an HP 8200 Elite Small Form Factor to boot from USB. It's done so in the past & the USB boot drive works in a different machine (HP 8440p laptop). Have tried upgrading BIOS (from 2.09 ...
-4
votes
2answers
82 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. ...
-1
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0answers
25 views

USB drives for Symantec Backup Exec 2012 [closed]

I am curious to know what USB drives our community has had success with when using Backup Exec 2012? I am using unsupported Toshbia drives at the moment with periodic success (I found out afterwards ...
9
votes
4answers
317 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 ...
5
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2answers
3k 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 ...
0
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3answers
1k views

Is it possible to use a blade server without the chassis?

Call me stupid, but is it possible to use an IBM BladeCenter HS20 server as a standalone unit without the BladeCenter?
0
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1answer
29 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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0answers
17 views

RAID 1 without cache protection - ZCMP/backup battery

I'm running RAID 1 on an Adaptec 6405. I'm trying to decide if I need to install the ZCMP on the card to provide Cache protection. Adaptec's ZCMP is the equivalent of a BBU - battery backup for the ...
0
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0answers
19 views

LSI SMC2108 hardware to HBA

I have SMC2108 (LSI controller) hardware controller, which I want to replace with LSI SAS 9207-4i4e (it's HBA - fakeraid). Can I switch the controllers and to access my data (even with readonly). I ...
0
votes
1answer
815 views

Upgrading a PERC h310 to a PERC H710 mini RAID controller on a Dell R620

I have an ESXi 5.0 Free license host using an internal Datastore (RAID 5, 5 Disk) that was configured with a Dell PERC h310 RAID controller. The disk performance was very poor, so I upgraded to the ...
0
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0answers
59 views

Linux dmesg errors, motherboard issue? [migrated]

When doing heavy disk IO on my system (16GB RAM, 6 cores, RAID0 PCIe SSD), the system stalls and eventually crashes. Normal day-to-day disk IO is fine, just prolonged read/write such as a database ...
26
votes
2answers
475 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 ...
2
votes
2answers
75 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
votes
1answer
188 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 ...
1
vote
2answers
220 views

Are there different kinds of Mini SAS to 4x SATA reverse breakout cables?

I have an RPC-4224 case that has 24 bays with 6 Mini SAS ports. I needed a cable to break out one of them into 4 SATA ports, so I went down to my local Fry's Electronics and bought one. The cable came ...
2
votes
3answers
66 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 ...
1
vote
1answer
393 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 ...
1
vote
2answers
2k 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): ...
2
votes
2answers
158 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. ...
18
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2answers
811 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 ...
10
votes
2answers
208 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
1k 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
62 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
39 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 ...
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votes
2answers
52 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 ...
27
votes
2answers
5k 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
84 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
881 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.
0
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0answers
27 views

What is the source of the interrupt count in /proc/interrupts

I have a system that should receive an interrupt from a digital I/O card at 10Hz. Every so often the CPU usage will ramp up to about 60%. When I examine /proc/interrupts the count for interrupt ...
0
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0answers
34 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
10 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
39 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 ...
10
votes
3answers
2k views

What happens when the USB key or SD card I've installed VMware ESXi on fails?

An SD (SDHC) card installed in an HP ProLiant DL380p Gen8 server running VMware ESXi just failed :( I encountered some rather ominous looking messages on the vCenter console and in the HP ProLiant ...
1
vote
1answer
65 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 ...
1
vote
1answer
296 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 ...
1
vote
0answers
41 views

Can NetApp filers/shelfs be directly connected to Linux?

I have a NetApp FAS2050 which is no longer in production. It have 4 disk shelfs. So I wonder: Would it be possible to connect the disk shelfs directly to a Linux host with a LSI adapter, and then ...
19
votes
4answers
822 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 ...
4
votes
2answers
193 views

2012R2 Storage Spaces Memory and CPU requirements

I am looking at possibly using Storage Spaces in Server 2012R2 to build a NAS off of. I am looking to build a fairly large unit, 12-14 HDDs, in a "RAID10" like setup (I know storage spaces does not do ...
1
vote
2answers
61 views

Red hat reporting more NICs than are physically present

We just deployed several servers (hp dl360p g8), and after the initial boot we're noticing that none of the network devices are showing up as cabled. Ethtool shows no link anywhere. Even more weird is ...
2
votes
3answers
724 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 ...
6
votes
1answer
3k views

How exactly does a SAS SFF-8087 breakout cable work? + RAID/connection questions

Please let me know if my question does not makes any sense as I am not sure if I am interpreting it correctly from my thoughts due to my lack of technical knowledge on this. If I am using a ...
0
votes
3answers
459 views

Buying servers and a server rack

I'm faced with the task of buying some servers (3) and a server rack on which to store them all. Our main requirement is that the server rack is enclosed and lockable so no one can easily walk off ...
5
votes
2answers
410 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 ...
0
votes
1answer
58 views

How to perform Hardware disaster recovery with backup server

I have a two windows server 2003 R2 servers with same configuration(same processor,same motherboard etc). One is original server and another one is backup server(Not to store backup files,it is a ...
0
votes
1answer
33 views

What sorts of hardware exists for doing enterprise level web serving in small packages?

My current project involves sending computers to clients that they will plug into their network. These computers fill the role of a web server, primarily. During a peak hour one of these servers will ...
0
votes
1answer
177 views

HP ProLiant DL385 G6 - “Fan Solution Not Sufficient” error

I have a HP DL385 G6 that is acting up. Weeks ago it stopped booting with an error of Fan Solution Not Sufficient. The front panel indicating that fans 3 and 4 were down though both these fans are ...
0
votes
1answer
27 views

How are BLKIDs Assigned?

Suppose I have a situation like I have installed /etc and /boot in two separate partition which belongs to an USB device , and the rest of the system / and /home in the HDD. Now my question is I need ...
5
votes
9answers
3k views

Why DELL PowerConnect and Juniper are so rare ? Why do enterprises stick with Cisco? [closed]

I have a little question, I'm actually studing IT in France, and when looking on alternative on the very [...] very expensive Cisco equipments, I've found Juniper and DELL PowerConnect pretty ...