Using A Switched PDU To Reboot A Dual-power Server
Nov 29, 2007
at getting PDUs for the new facility where we plan to move our servers to. Our cabinet will have 2*20a circuits, so we're thinking of getting 2 APC PDUs (1 per circuit). Some offer remote reboot capability.
Our servers (Dell PowerEdge) have dual power supplies, and I assume the best thing is to plug one power supply into each circuit, so things stay up even if a circuit fails.
So, how would this work if we want to reboot? The servers can run on only one power supply, so does that mean we have to click reboot on the web interface of each PDU at exactly the same time?
I've never worked with PDUs before.. just cheap power strips and a call to the datacenter
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Jun 30, 2007
on remote reboot switches that will allow us to cycle power on two plugs at once for use with servers that have redundant power supplies.
Brands and models welcome. We should also be able to access the units remotely to cycle power.
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Jun 2, 2008
I would like to buy 5 of the AP7921 APC PDUs. This is the description of this PDU:
AP7921 Horizontal Rack PDU Switched - 1U 16A (8)C13 and 208/230V Output
I have now an offer from PROVANTAGE and from CDW. But even I buy 5 of them, I have to pay the price which they publish on the internet.
Provantage is selling them for 429$ per pice. Can someone recommend a cheaper shop to buy them which is also delivering them to europe?
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Apr 2, 2007
If you have experience with large mysql databases please share your thoughts about a new MySQL server. If all other parameters are the same, what is better for a 6-10 GB MySQL db, dedicated server?
Dual XEON or Dual Opteron 2212 Dual Core Processor?
Also, any advice on suggested RAM, partitioning, OS, etc. are welcome. Current MySQL version used is 4.1.21.
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Apr 26, 2009
What's a better choice DUAL XEON 2.8GHZ 533FSB w/HT or Pentium D 925 3.0 Dual Core?
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May 26, 2008
if these were decent pricing for the following dedicated servers:
DUAL QUAD-CORE XEON
2x XEON 5345 (8x 2.33ghz)
2GB FB-DDR2 667 RAM
250GB HDD
THIS CONFIG - $350 / mo
DUAL DUAL-CORE OPTERON 285
2x OPTERON 285 (4x 2.66ghz)
2GB DDR 400 REG/ECC
250GB HDD
THIS CONFIG - $250 / mo
SINGLE QUAD CORE Q6600
1x Core 2 Quad (4x 2.40ghz)
2GB DDR2 1066 RAM
250GB HDD
THIS CONFIG - $200 / mo
They are all listed as 10mbit unmetered and they show the following for their providers:
Qwest, MCI/Verizon, Savvis and BTN
Does it seem about right? I'm new to hosting and just wanted to make sure that it is decent pricing.
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Mar 13, 2008
We are going to buy 2 servers. One will be a Apache webserver (PHP, ZendPlatform) and other will run MySQL.
which one is better Dual Xeon or Dual Opteron? Below are the available options.
[url]
Dual Xeon E5335 Quad Core (Clovertown)
Dual Xeon E5420 Quad Core (Harpertown)
[url]
Dual Opteron 2212 - 4 CPU cores, 2.0 GHZ each
Dual Opteron 2344HE (Barcelona)
Dual Opteron 265
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Feb 20, 2007
I want to colo dual xeon 3ghz/ 2 x 250 sata drive and Dual core 3.0 / 2 x250 Sata drive.
How much amp these server need? One colo company said 4amp for dual and 2 for dual core. Do I need 6amp for 2 servers? Rack comes with 15amp so I need half rack?
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Aug 6, 2009
APC seems to be the golden standard for switched PDU.
We are looking at a Tripplite B060 IP KVM
For all you KVM gurus, that have played with various brands, love to hear feedback on the various makes out there.
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Jan 23, 2008
Which one you suggest for running database server and VPS's?
Dual Xeon3ghz 1mb dual core vs Quadcore 6600 2.4ghzx4 core 8mb.
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May 28, 2007
I have a couple of these and we are looking to throw them into our rack but I have a question, is it possible to monitor the amp usage on a certain port or is it only possible to monitor the whole device?
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Jan 8, 2008
I had to reboot my server and about 20 minutes later I tried to access the web site but the page was not found... I am able to login to SSH. However, I am not familiar with *nix or the workings of CPanel... What should I do to get the sites back online?
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Apr 16, 2008
I'm worried a server is dead, and I haven't made any backups of the database
Server went down last night, submitted a reboot request and now the server is not responding to SSH.
It does respond to ping, so I'm assuming Linux might have booted up OK
Has anyone experience with this type of issue?
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Sep 4, 2007
I have a dual processor server and today I was monitoring CPU usage using the ‘top’ command
There was a mysql process I was tweaking around with where the CPU % kept jumping over 100%.. It went up to 155%, 175%, 180% on numerous occasions.
My question is on a dual processor machine does ‘top’ measure CPU usage between 0% and 200% or does the usages I saw earlier mean my server was getting REALLY overloaded?
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Mar 29, 2009
Have an issue that I am dealing with, APC support couldn't really help me get anywhere either.
Here is the story:
I am leasing a rack at Equinix in Sunnyvale.
It came with 3 APC Switched rack PDUs.
By the looks of it, they were used by the previous customer.
APC sent me a serial to RJ11 programming cable, and I have been trying to use HyperTerminal, but I get a blank screen when I attempt to connect.
I have tried arp commands, but, again, it looks like the device was previously configured.
I downloaded this: [url] hyper terminal software.
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May 28, 2008
I have a Switched Rack PDU AP7921 in use and it was working now for several months without any problems. But sice yesterday I have a problem with the network connection. I was not able to connect to the PDU anymore, after pressing the reboot button it was working again. But after a few minutes, the problem appeared again.
Is this a common problem of this APC PDUs? Is there a fix, for example a firmware upgrade or is it broken?
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Sep 8, 2008
I ordered a leaseweb express server 4 box with windows server 2003 and have been running it, installed some software etc which worked out fine.
Anyways, I wanted to disable tcp/ip filtering which I did and afterwards it prompted me that I would have to reboot the server for the changes to take place, I clicked ok and it rebooted. Now I just can't connect with remote desktop, I tried everything.
I'm guessing it either shut down or didn't reboot properly? I tried sending an email to leaseweb support 2 days ago but still no shadow of any reply..
It says that I can reboot the server using the SSC but when I log in there, I can't really find any reboot option.
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Mar 26, 2007
How can I see the logs for my server before doing reboot to see why was high load in my server?
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Nov 26, 2008
I have been interested in setting up my own server for hosting a website and a small online game I created. My only problem is how good of a server I would need to get.
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Jun 9, 2008
I have been hosting boxcheats.com with HostGator for a few months, and two days ago I ordered a dedicated IP address to see if it would help with seo. Traffic and Adsense revenue significantly dropped immediately after the dedicated IP was assigned to my account.
Is this normal when switching to a dedicated IP address and what is the cause for the instant drop in traffic?
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Jul 4, 2012
I have a working PHP on the server, it is enabled and the sites are working. However they are not synced with the plan. If I try to sync it it shows:
PropertySubscription valuePlan valueAvailable valueAffected sites PHP supportswitched off switched onswitched off mydomain.com
Now how do I change the available value to be switched on?
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Jul 7, 2009
I was searching google when I saw this => [url]and decided to sign up and post my issue...
I've been plagued over the past few weeks when I noticed the server keeps rebooting randomly ...
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Jun 7, 2009
my datacenter says that they have not had power failures(lol yeh right) but i cant seem to figure out why my server seems to be rebooting randomly. so far its happened early 3-5am my times today and yesterday, just its happened 4x more times this morning.
im not sure if cpanel is sending me bind start failures because its not set to auto start up on reboot or if it might be related... but the server seems fine.
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May 11, 2009
anyway to auto reboot server every 6 hours?
will this effect on the server?
i'm running on CentOS 5 and whm
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Jun 17, 2009
i have a dedicated server at theplanet.I dont have a remote reboot option.
a friend of mine said,that all dedicated servers have remote reboot options.he says that since i dont have a remote reboot option,i am probably on a shared server.is that correct.does theplanet have shared or vps offerings in the first place ?
i cannot reboot the server,but i can log in through shell as root type in shutdown - and turn the damn thing off.....
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May 25, 2008
I have Plesk 8 installed I would like to create Scheduled Task as root to reboot the server in every 8 hours.
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Sep 3, 2008
Given the choice which is more beneficial. Some of the things I've read say Database servers use up more RAM and others say they use up more CPU power. I'm just not sure.
Also, what HDD should be used for the database server? I have a choice for SATA or SAS.
Some benchmarks are showing SATA as faster I believe, but that SAS is more reliable? Can anyone comment intelligently regarding that as well?
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Apr 13, 2008
how to go about spec'ing the power consumption of a server. below are the specs of the two servers I'm interested it.
Dual Xenon 2.8Ghz Processors with 2MB cache
1 250Gig SATA Hard Drives
1 500Gig SATA Hard Drive
4 Gigs of Ram
------
Dual Xenon Quad Core 2.66Ghz
1 80Gig Hard Drive
2 320Gig Hard Drives
1 1T Hard Drive
8 Gigs of RAM
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Apr 20, 2015
I have one domain (just one?) that has a serial of 0 (on my server 5.9.57.170 , latest plesk)
Because of that, dns updates don't happen, dns servers don't respond , and my domain issuer is threatening to revoke the domain as it is not working as it should.
> dig auringostaitaan.fi @5.9.57.170 soa +short
robotns3.second-ns.com. torsten.ruger.gmail.com. 0 10800 3600 604800 10800
You can see the test here [URL] .... when you enter the domain auringostaitaan.fi
In trying to fix this i have switched the dns off,changed the mode, enabled RIPE, but i get what it says [URL] ....
Note: See the sample of SOA serial number generated with the selected format. If the resulting number is less, than the current zone number, the modification may cause temporary malfunction of DNS for this domain. Zone updates may be invisible to Internet users for some time.
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May 4, 2009
different opinions on dual cpus and dual core.
But say: I have 2 servers, one with a dual CPU and another one with a single CPU but dual core. The CPUs have all the same specification (bus speed, cache, frequency, etc). Which one would perform better for web hosting (php, mysql)?
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May 8, 2008
What is the fastest server Dual Xeon 3.06(HT) or Pentium D 3Ghz ?
to select the fastest one?
Dual Xeon 3.06 with HT
512K cache [1MB total on 2 processors]
533FSB
2GB Ram
Pentium D 3 Ghz (Dual Core)
2MB cache
800FSB
2GB Ram
==================================
My second question is,
Pentium D 3GHz mean
1.5GHz X 2 = 3GHz or
3GHz X 2 = 6GHz ?
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