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

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1answer
42 views

“Core Charge” on defective server HDDs

I have collected a pretty decent amount of SAS and SCSI disks over the years that have a predictive failure warning. I was just about to throw them all out, but wondered if any of the manufacturers ...
0
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1answer
76 views

How big are my disk arrays?

On my SunOS 5.10 host are there 3 Sun 6140 disk arrays, and I would like to know the disk capacities. According to zpool list do I have a 5TB and 16TB pool. format shows me only 12 disks c2t1d31: ...
14
votes
2answers
1k views

What RAM options do I need to know before buying Server RAM?

This is a proposed Canonical Question about Server Memory. I have to buy a Dell R420 server and there are various combinations (1600 and 1333 MHz RDIMMS and UDIMMS) and Performance Optimized vs. ...
4
votes
3answers
5k 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 ...
1
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2answers
82 views

Encrypted partition and hardware failure

I have a kind of philosophical question. I'm about to set a new backup server and as time is passing encryption of data seems more and more reasonable. However what if the harddrive goes bad. I know ...
4
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2answers
621 views

Is there a way to check that the hardware of one server is the same as that of another?

We have three Ubuntu (trusty) servers taking requests. One of them is having a variety of weird problems that we are trying to find the cause of. Firstly, we want to rule out hardware differences. So ...
-2
votes
1answer
559 views

Why does a low level format take very long time?

I can write ~100MB/s on a particular 4TB SAS drive when it have a file system on it, but a low level format on this drive took >16 hours. That's ~70kB/s. Since there is not filesystem and only zeroes ...
0
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0answers
71 views

How to get VmList from CiscoUCS?

We are using XML API to connect CiscoUCS Manager and get all the hardware components. We are in the requirement of getting all the VM deployed in the bladeServer. But not able to find these ...
2
votes
1answer
87 views

Cisco switch, white residue in switch ports

I have 2 cisco small business switches, unknown age and provenance, both have developed a white residue on some of the switch ports as below image: Any ideas what causes this? It looks a little ...
0
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2answers
73 views

Is it safe to put non-standard units inside racks?

Is it unsafe or might the request be denied by some companies that offer colocation to put non-standard units inside a full rack? This is my case and, speaking of dimensions, it fits. Also, as you ...
4
votes
1answer
3k views

Proliant DL380 G7 won't boot, solid amber power LED

I have a problem with an HP Proliant DL380 G7 that leaves me without much in the way of troubleshooting approaches. This server will not boot. It was stored in a datacenter, and I went to retrieve it ...
-2
votes
1answer
62 views

Hardware solution for small IT company [closed]

I'm starting up a small programming company for web development soon, so I have couple of questions and dilemmas in my mind. First of all should I go for standalone machines for each programmer or ...
0
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0answers
30 views

Can I Use Different Versions of CME and CUE

I am running CME 8.6 on a Cisco 2811. I would like to install NM-CUE and run CUE 7 with this. It this possible, even with a version mismatch?
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votes
2answers
408 views

Are AMD Opterons more reliable than AMD FX CPUs?

AMD Opteron CPUs are marketed for servers, and FX CPUs for desktops. However, both support ECC, and while only Opterons support registered RAM, the issue is unrelated to reliability. So, what makes ...
0
votes
2answers
900 views

RAID consideration for 24 Disk Array

I have here a 24 Disk Array with 3.7 TB disks in it. What would be, performance wise a good configuration when using a RAID 6: RAID 6 over all 24 disks or should I use 2x12 disk RAID 6 and than a RAID ...
-3
votes
1answer
68 views

Commodity hardware related, i'm searching for a ILO, BMC, ALOM and in general IPMI alternate solution [closed]

I'm searching for a composite solution to have the same features of an IPMI controller on commodity hardware independently from arch/model and without excessive device dependencies. Essentially the ...
8
votes
5answers
813 views

Hot spare host vs cold spare host?

We have several hosts where we have an identical hot spare host, which is patched and updated so it is very close to have to same software and config. In case of failure the network cable is switched ...
2
votes
3answers
1k views

Performance of HP SSDs in HP servers

I am trying to find performance data about the official SSDs offered by HP for their servers. I can hardly find any specifications on the HP website or somewhere else on the Web. The device I am ...
1
vote
1answer
146 views

Box to create a VNC to multiple servers' VGA output and keyboard

My boss has ordered me to find a box that we can connect to our 8 servers, so that we can view the VGA output and use the keyboard as if we were sitting directly in front of the server (i.e. see that ...
0
votes
1answer
82 views

DHCP server hardware [closed]

I have a user who needs to set up a DHCP Server for about 8000 users. Can I set it up on regular PC hardware. So far we have not set it up for more than 200-300 users. Are there anything which I need ...
3
votes
3answers
879 views

How many power circuits do I have in a rack?

I'm planning to get some colocation space from someone in my area, and like most companies that offer colocation, ask about power supplies (of course) in the quote form. I'll need a power of 1000W ...
5
votes
2answers
3k views

CentOS not detecting Intel 10G (ixgbe) interface

I have a server with CentOS 6.5 installed with 2x 1Gbps Ethernet Cards, I have added a new interface (Intel(R) 10 Gigabit PCI Express Network) but the problem. is the system is not detecting the ...
3
votes
2answers
614 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
216 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
90 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 ...
1
vote
0answers
83 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
624 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 ...
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votes
1answer
711 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
68 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
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0answers
42 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
250 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
489 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
102 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
987 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
711 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
86 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
56 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
516 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
197 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
406 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
485 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 ...
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votes
1answer
419 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
365 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
441 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
862 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 ...