the title says it all per month. just curious since this is something in europe that gets a price bump when it comes to power and space. yes i got two colo servers in different locations but never have i asked.
View 8 RepliesJust colocated at HE.NET and the the 15 amp limitation is a challenge. I'm just wondering what tricks there are to reduce power consumption by computer. Maybe people can add their tricks to this thread.
I'm experimenting at home right now. I got one of those KILL-A-WATT meters. (Egghead $18 - they are GREAT) And I'm measuring power usage with different configurations.
One thing I noticed is that the bios "cool and quiet" setting make a big difference. At idle current drops from 0.90 amps to 0.67. Of course if the processor is running 100% this probably goes away but if you have a cabinet of server and not all of them are maxed out all the time this should add up.
I'm using OpenVZ virtualization which allows my to use hardware more efficiently.
Just wondering if any of you have other tricks that cut electrical usage. Might have to put quad core processors in all my servers for expansion. Wish AMD would get their act together and get high speed quads out there.
Everything I have has 8 gigs of ram now.
Any hard drive setting I should know about?
how often does a colo provider's datacenter go down? I'm not talking about resellers or their racks, but the primary provider itself.
This has been the 2nd time (this year I believe) that my datacenter at NAC has suffered a complete power outage [url], their backups failed, and my entire rack of servers were power-cycled.
Luckily I am not a web host but I am running some critical public web services/sites. I have all of the equipment to manage my own colocated machines from afar (monitoring, remote reboot hardware, and KVM/IP hardware for all of my machines) but I'm dead in the water if my datacenter's power is out.
I always ease my pain throughout a network outage or power outage by visiting DSLReports. Their HUGE website is hosted in the same datacenter (probably in the same room) as me and while it is a terrible thing to say, being able to share the downtime with a bigger fish is easier for me to handle.
1U colo, 1 mbps, 1 amp power in major China cities
Must have premium, mulit-homed bandwidth, with great connectivity to the US
Must have local cable TV cross-connect via coax, s-video, etc.
Prefer remote reboot
Some or all of the following:
Shanghai, Beijing, Chongqing, Tianjin, Wuhan, Harbin, Shengyang , Guangzhou
OK to have colo and cctv cross-connect in one or more cities - you dont have to do them all.
We do NOT need colo without the cctv availability.
Will need a /30 address space.
1 year minimum contract
a dell 1750 with redundant power supply that has two plugs on the back.
But...
Looking at 1U colo with only one plug available for the 1U price.
Is the only solution to use only one of the two power supplies in the Dell 1750...?
My company ordered server on 23/10/2009 from LimeStone, and they asked for verification hence i given them all the ID that they need. After that, they told me they couldn't accept AMEX and have to pay through PayPal, i have paid since and NOW again they asked for ID again.
Why i have to verify for second time since i have posted all my ID and utility bill for first time? I don't think i need to give so much verification since PayPal has already verified my account as i owned PayPal Verified Business Account, this kind of "repeating" or double verification never happen when i order from ThePlanet/EV1 where i am looking to migrate to Limestone Networks.
This is very unpleasant experience and I don't want to wait for more than a week to get a server.
what happened not sure really, but asked volumedrive to reboot the machine like an hour ago and it has still not come online, anyone know or has experience with VD and how long it usually takes them to reboot machine? Or is there any outages anyone is aware that VD is facing right now ?
Damn i got some upset users already ready to shoot the bunny, baah this proxy hosting is kinda harder than one would imagine
my previous experience has been shared, all operations are done by panels and ftp.
as some budget unmanaged vps is in my budget range (sub $10), i would really like to give it a go. but as i have no experience at all, i m not sure if i can manage it well. so i m here to ask, what do i need to know, what is the skill set to be an unmanage linux vps admin.
i am not a linux expert, but i've been using suse at work for java development, and trying out ubuntu at home. i know some basic skills like getting packages and install them. use pico to edit configurations files.
what i don't know is: what packages to get, and what config files to edit and how.
but as long as there's some tutorial for me to follow, i think i should be able to do it.
I am running phproxy on my dedicated server.
Sometime some process hangs for long.
I want to kill processes automatically when it takes more than 5 minutes.
And is there any tip you will share to optimize my server best for phproxy?
I've seen many posts in the past few months about people under attack who were not able to handle things themselves, and who made statements along the lines of DDoS mitigation services that one has to pay for are too expensive.
First, I will state that my company does offer those services, and they are not cheap. We offer DDoS mitigation services for hosting/colocation/internet providers who can then resell it to their customers. I state this so that you know that I do have a bias here, though everything I state below is fact.
1. There are free open source tools that can help. Apache modules, IPTables scripts that extract info from netstat or syslog, and I know one guy who is puting together a kernel module. Most of these can stop small scale attacks, and are quite interesting to set up - if you like the technical end of things.
2. Most botnets have more than enough zombies to overpower #1 above.
3. If you have a 100 MBPS pipe to the internet, it doesn't take 100 MBPS of traffic to saturate the pipe and take it down. Enough small packets can overload a router's ability to process, and 10-20 MBPS of traffic can take out the router.
4. There may be a few ways to deal with this, though the best in my experience has been to place an intrusion prevention system (IPS) in front of the router. I have a number of friends in the industry who work at companies where malware is analyzed, and where they work with law enforcement to try and identify the attacking parties. This can be a lengthy process and will not often get a site / router back up quickly, though can be very nice in the long term.
5. Not all IPS are equal. I'm not going to name brands, but I've seen one $50,000 box that had gigabit links die after about 80 MBPS of DDoS traffic. If you're looking into IPS, make sure you compare what they actually do, and talk to people who have implemented them.
6. The majority of the IPS that we manage for our customers and that we implement when we have a new customer under attack are from TopLayer. There are three reasons for this; Their IPS actually works the way you would expect it to (the gigabit model can handle a gigabit of DDoS traffic); If there is something that the IPS can't block, we call their dev team who will work with us to figure out a way to block it; And they give us the best deals.
7. Implementing an IPS is not cheap. The suggested retail price for a gigabit level IPS is about $80,000 USD. Consider that a hosting/colo/service provider who has a two gigabit pipe will need two of these.
8. Managing an IPS takes a special skill set. The people with this skill set are usually expensive to hire as employees, and while I've known a few service providers where the chief technical guy (often a partner in the company) has been the one to manage the IPS, this guy has a lot of other important things to do, and doesn't usually want to be woken up at 2am every few days when there's a significant alert from the IPS.
9. Contracting out IPS management and monitoring can run anywhere between $1,000 and $2,000 per month depending on service options, response times, and contract length. This will usually include remote monitoring of the IPS from a security operations center (SOC), and a lot of escalation options on how to deal with attacks.
10. If an attack is using mechanisms that can get past IPS protections (I will not list them here to give people ideas on how to get around IPS protections, though if anyone is in the field and would like to talk about this I'd be more than happy to do so), then there will need to be escalation options at additional fees from other companies who specialize in that particular area. If subscribing to managed services such as #9 above, then these options should be listed with pricing knowledge available to the customer beforehand. In fact, the company offering the managed IPS service should manage the interface between their customer and the escalation company (we certainly do, and that's one of the things that our customers have been very happy about).
11. Considering #7 through #10 above; the cost of buying/leasing an IPS, managing the IPS and/or paying service fees, and escalating technical work in the event that there is something outside the scope of what can be mitigated using the standard tools, it is more than reasonable for a service provider to charge a significant amount of money to their customers for protection readiness, attack mitigation, and emergency setup fees in the event that there is a situation where a customer is being attacked, needs the service immediately, and has not been paying for protection.
12. A service provider will turn off (null route) their customer when the impact of an attack affects the rest of their customer base. If an attack takes out a full 2 GBPS pipe that they have for all their customers, and null routing one customer is the way to keep the other 1,000 customers up, then that one customer will be null routed. It is a sound business decision. In cases like this, there are options for how to deal with that customer, and that customer will have to decide if they are willing / able to pay for said options.
do dual power supplies use more power than a single supply?
E.g. Say I have a server than uses two amps, powered by a single power supply. Now if I switch to a dual supply (and say each supply has the same efficiency rating as the single), does my server use more power? How much more?
My simple view of this is that it probably does, but maybe not much. The second power supply consumes some power itself, but since its not under load, it doesn't consume much. Therefore, my server with redundant supplies might use 2.1A or 2.2A.
I do a ps aux, and get a bunch of:
/usr/sbin/httpd
Each one takes up like 4% of the available ram - and when the ram is gone, the server dies (it doesn't have a swap file - half the time you can't even log in to it), and you have to reboot Apache.
I thought of limiting maxchilds, but would that break something else?
Should I just make a swap file? Will that defeat the point of creating child processes?
I changed my sites IP address via cpanel, but now it doesn't show up in a web broswer, I check out cpanel's website for information about this issue, and they posted this:
"It may take up to 48 hours for DNS servers to register the change and the site may not be associated with the new IP address during that time period."
is that true? change the sites IP address will take 48 hours to show up? I figured since it was all local IP stuff, it'll be a instant change and working instantly. since the name servers are all the same, ect.
anyone shed some light. I just wanted to know if I should give it a day to start working? or as of right now, I feel like I need to fix a cpanel error... but if its true, then everything is ok
I am running CentOS 5.10 (Final) with Plesk 11.5.30 Update #44 and since a few days have the strangest problem with incoming emails from certain hosts.
The email from known senders produces a relaylock message like:
/var/qmail/bin/relaylock [12345]: mail from 80.80.80.80:59595 (mail.hostname.com)
From what I was able to gather this is regular behaviour with plesk and qmail, indicating that the senders' mailserver has made contact.
Then nothing happens. For hours. 7-10 to be exact. Then the mail is being processed and delivered.
Please give me the difference. Colo in carrier hotel, we can choose our preferred network provider, but should we do that if we cannot have our own tech in datacenter? How about the supporting service from carrier hotel? Just general question, cause I dont address exactly which facility.
And the second would be more expensive? Saying the same number of rack, amount of bandwidth... Who is providing IP addresses then?
Panel-Version11.5.30 Update #38
BSDebian 7.4
Save Web Hosting Settings takes a long time. The Domains (Apache Server) are not reachable for 36 seconds.
Host will only update DNS in batches, takes several hours for a DNS change, is that normal?
Well today my mail stopped working and it turns out the A record for mail was deleted. How it got deleted I don't know.
I called my host and after speaking to 2 techs, they said that have added my request to a batch, and that would update in a few hours.
I said to him, batch? What can't you do it instantly?
He said thats not the way their DNS works and any DNS change would affect thousands of other sites they are hosting.
Does anyone know what kind of dns system these people could possibly have where they can not reload a single zone?
And by affected, I think he means the sites will go down for a minute or so, while it relaods every zone. Is this really the case, or are these people just idiots?
We had many backups stored on our Plesk 12 server about 51 GB in total.
After reducing the backups back to 10 GB by removing old backups through the Backup Manager.
The issue is that Health Monitor still reported that there was low diskspace displayed by color yellow. And it look Health Monitor over 16 minutes to change the alarm level from Yellow to Green
However the statistics at the specific subscription still present the Backup usage of 51 GB's whilest they are no longer there.
What can i do about this in order to speed up the synchronization?
I just signed my agreement for 2 cabinets at Internap's Atlanta CoLo. For now, I will just have 1 120V 20A circuit in each cabinet.
At my office's server room we currently have 8 circuits I am powering my 2 racks from. I am just curious how many servers you can typically put on a 20A circuit. I am also considering adding two additional power feeds (1 more for each cabinet) to have truly redundant power for my dual power supplies.
I am hoping that 20A is plenty for my needs. I have around 20 HP and Dell systems. Mostly HP DL380s and Dell PE2950s.
Any ideas? I am splitting them in half, only filling up a half of each cabinet for now, as we are growing quickly and I wanted to overguy space so I would not be forced to add another cabinet later and have it end up somewhere else in the DC.
I wonder if any colocation providers here have any tips for measuring power. Currently I'm using APC 7900 power strips with amperage meter. I'm not a power expert by any means but I want to be able to calculate whats the cost having a server drawing 2 amps 24/7 365 days week.
Our secondary site gave us a whopping power bill, and at our own data center we never considered charging our customers for power.
I need to know what happens when a rack has capped its (lets say) 5A limit. I'm trying to calculate what exactly I can put into a rack and am considering that not all servers are going to be 100% load, as that would be bad performance anyway.
I guess it could do the following (but really don't know):
Cap performance of all servers
Cause system failures
Trip
The rack would have servers, a switch and perhaps a Remote Power Strip and Firewall. I don't know how they would be affected.
how much power the average hard drive would use? (ie a 1tb drive). I was looking on WDC's website and it said 7.5 watts peak durring writing and reading etc, so assuming thats at 110 voltage, would it be safe to assume that 12 drives @ 7.5 watts each would make a total of .81 amps? I am going off of the equation that Amps = Watts/Volts. So amps = 90/110
View 1 Replies View Related"Can i host a small forum at a 64mb ram vps with lighttpd and mysql? How many users can i have online?" I said that he can do that.Is this answer true?
View 14 Replies View RelatedI've been doing research, and looking around on Google for a list of processors that use little power.
What are some of the processors out now a days that have minimal power usage?
Chassis will be SuperMicro's with 1-4 GB ram, if that's of any use.
We are transitioning from an on-site data center to a collocation facility and are having problems negotiating the right amount of power, the type of connections, and the PDU power strips that we need.
For simplicity lets say that we are going to rent a 10 ft by 10 ft cage area. This should house 4-5 rack cabinets.
The amount of power we are given for this area varies with the lowest being 120 watts/sq. ft and the highest being 175 watts/sq. ft.
With 120 watts per square foot that comes out to about 6.25 circuits that are 20 amps for a 10x10 space.
For the initial setup we would have a Cisco 73xx Router, a HP 26xx switch, an Avocent IP KVM, an EMC CX3-10 SAN, and our Dell PowerEdge 2950 III servers (4).
Using the calculator at: dell.com/calc I show the power requirements for all of the Dell equipment to be:
C13 Power Cord Qty: 12
Amperage on C13 Cords: 26.49 amps
System Heat/Power: 2754.6 watts
Total Current: 13.24 amps
The way I was envisioning this was Rack 1: Router, Switching, KVM on a 20 amp circuit and Rack 2: Dell Equipment on a 30 amp circuit. Is that right?
Additionally, I'm confused about single phase vs. three phase power in the data center and what most people choose to implement. I've heard talk of getting redundant power in each cabinet but that seems like you limit yourself to half of your space doing it that way.
And the last thing is it's confusing about what type of PDU you need to put in your racks to make it all come together. All of our equipment should be using IEC C13 cords and we're thinking about going with Avocent for all of the KVM/PDU so we can centrally manage it.
It seems to me that if the cost is roughly the same we should be pressing as hard as possible for the highest watts/square foot since that seems to be one of the most important commodities in any data center.
How much does a typical quad core Xeon eat, say an E5410 or a E7320? a 2GB RAM stick? A 500-750GB SATA disk? How much is the system overhead for a 1U unit? I tried to find data on this without too much success. For example Intel says the same number (80W) for an 1.6GHz CPU and a 2.4GHz one -- that does not sound too reliable to me.
If this is too abstract, then I would like to ask aobut the real world power consumption of two boxes. 1 E5410, 8GB of RAM, 2 SATA disk maybe 10K RPM. The other will have two E7320, 24-32GB of RAM and 3 10-15K disk.
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.
View 10 Replies View RelatedWhat the difference between high and low power on a PDU?
View 0 Replies View Relatedhow to figure out how much power one would need?
My potential colo provider is saying that a 5A circuit comes standard with a 1/4 cabinet and that they charge $20 per amp over that. I will have (6) Dell 1650's with dual 650W PSU's. Any idea how to calculate how much actual power I will need for this configuration?