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

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3
votes
2answers
628 views

Are transceivers hot swappable?

Are transceivers in general hot swappable, and if not, how do I find out if these are? Using these adapters 665243-B21, HP Ethernet 10Gb 2-port 560FLR-SFP+ 665249-B21, HP Ethernet 10Gb 2-port ...
1
vote
2answers
230 views

Pros and cons of virtualization [closed]

I'm aware of many questions here discussing similar topic, but in this case, I'll try to be much more specific. One target scenario is small to mid-size ISV, the second scenario is an enterprise ...
-2
votes
2answers
91 views

Windows laptops similar to macbook pro [closed]

My employer provides a macbook pro with core i7, 16GB ram and an SSD drive. It is an awesome laptop. I am able to run 2 VMs, glassfish, mysqld, IntelliJ IDEA at the same time. Is there a equivalent ...
5
votes
2answers
4k views

HP ProCurve 2920 switch stack topology for TWO switches? Ring vs. Chain vs. trunk?

I have a customer whose two HP ProCurve 2910al PoE switches have failed. This was backing a VoIP deployment for a small call center. They are interested in replacement PoE switches, but there's a ...
1
vote
0answers
90 views

SMI generation / detection in GRUB / real mode vs. in Linux

I'm trying to get an idea of the frequency and duration of SMI events on a Supermicro X10SAE C226 board (2.0a BIOS) with E3-1245v3 Haswell CPU. The Intel BIOS Implementation Test Suite (BITS) SMI ...
3
votes
1answer
667 views

Determine what MAC addresses are connected to a given port on a Netgear GS724T via SNMP?

In looking through the output of an snmpwalk against our GS724T Netgear switch I was surprised that it doesn't list what MAC address(es) are connected and/or using a given port on the switch. This ...
-2
votes
1answer
754 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 ...
1
vote
1answer
70 views

Change Hardware Resources During Certain Times Of Day On Windows Azure Virtual Machine

I thought I read you could change the hardware resources during certain times, days, etc for Windows Azure Virtual Machines. I however don't see this option, am I missing it in the Azure portal or is ...
0
votes
0answers
43 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
270 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 ...
2
votes
1answer
513 views

HP Proliant DL380 G3 not booting. Error “1611 fan 7 not present” after changing power supply

I inherited an HP proliant DL380 G3 some years back and it's been working faithfully as a games/web/build server. At some point during the past year where I haven't been using it the power supply ...
0
votes
1answer
110 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 ...
3
votes
2answers
1k views

Upgrading RAID controller to 4kn - do I have to reinitialize the array to use 4kn?

I have an enterprise-grade workstation with an Adaptec 6405E RAID controller in it. According to Adaptec, this RAID controller does not, and will never be able to, natively support 4K disk sectors. If ...
0
votes
1answer
868 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. ...
45
votes
7answers
7k 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 ...
1
vote
1answer
60 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 ...
6
votes
5answers
3k views

SW SSD Raid 1 over HW RAID 10

A provider(data center) recommended I go with 1TB SSDs in a software RAID 1 over HW RAID 10 with mechanical drives. Their quote: Typically SSDs are most reliable than RAID cards and since you ...
-4
votes
1answer
88 views

Recommend between workstation and tower server? [closed]

I'm planning to buy a computer for my office. What i want is a computer that strong, stability, can run 24/7 for hosting my website with tens of thousand people visit per day. Because it's placed in ...
0
votes
1answer
60 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
2answers
579 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
203 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. ...
0
votes
1answer
453 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 ...
2
votes
1answer
534 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 ...
-1
votes
1answer
504 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 ...
0
votes
1answer
389 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 ...
2
votes
2answers
452 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 ...
1
vote
2answers
2k views

Uncorrectable Machine Check Exception on HP DL360 G7

i have about every hour in IML (hplog) from HP DL360 G7 record: CRITICAL: CPU - Uncorrectable Machine Check Exception (Board 0, Processor 1, APIC ID 0x00000003, Bank 0x00000005, Status ...
2
votes
3answers
929 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
votes
1answer
359 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?
-2
votes
1answer
100 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 ...
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
106 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 ...
2
votes
0answers
493 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 ...
0
votes
2answers
579 views

HP ML150 G6 upgrading RAM/CPU beyond specs?

I am being told that some limits on some HP servers can be crossed. Do any of you have any experience with that? A ML150/G6 is limited to 48GB RAM but I have been talking to a German company that ...
-1
votes
1answer
124 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 ...
3
votes
0answers
507 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 ...
4
votes
1answer
2k views

HP ProLiant Gen8 Health Agents and EL6.x - cpqHoMibHealthStatusArray has changed to the value: x

I've noticed that my HP ProLiant Gen8 servers report the following message via email to root (or the destination configured in /opt/hp/hp-snmp-agents/cma.conf) upon restart. Trap-ID=11020 ...
-1
votes
2answers
509 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 ...
10
votes
1answer
954 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.
4
votes
2answers
577 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 ...
8
votes
3answers
523 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
232 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
74 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
530 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
1answer
609 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 ...
26
votes
2answers
2k 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
1answer
6k 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 ...
5
votes
2answers
3k 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
1answer
149 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 ...