Can All Newer Power Supplies Handle Running Straight 208v
Oct 31, 2009
Currently we are running some equipment on a 208v 30amp circuit and using APC step down transformers to take it to 110v.
All the servers running on that circuit are Dell PE1950's so they are pretty new. There is also a newer dell switch and a Cisco Pix 515E on there.
I am getting rid of the step down transformers and everything that I have read says that all the PSU's are auto switching and there will be no problem with them running off of straight 208v power without any step down taking place.
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.
Supermicro power supplies today and found something odd.
There are several 2U chassis that are listed as having 700W redundant power supplies. I thought this meant that there are 2 power supply modules, each rated to 700W.
However, if you look at the power supply matrix here:
[url]
Under 2U, the options for redundant power supplies are 500+500W or 400+400W or 350+350W. Does this mean that each individual power supply is only rated to half of the total power. For example, 700W redundant power supply = 2x350W individual power supplies?
Let me start by saying that we use redundant power supplies for all of our core service nodes, however I am wondering about the failure rate others have experienced.
I have been in the industry for nearly 4 years now, and have yet to see a power supply failure, so I'm considering just going with single power supplies instead of redundant.
I have a client which run an active CMS and the server is utilizing the swap space at the moment. It is running on 6GB memory and a Xeon processor now. Is there anything that I could do before going for hardware upgrade? The apache and mysql keep exhausting the memory during peak hours.
I'm running plesk 11.5.30 and I'm having an issue with the new word doc format (.docx) being recognized as a zip file. I've read several posts that explain what mime types to add, and I've found the spot where I need to enter them. The part I'm not sure about is whether the custom mime types field is an addition to the current mime types or a replacement list. Does that field just needs the new mime types or a full list?
I've only ever had a shared hosting account with Hostgator, plus a few freebie hosts. However, I'm now pulling some heavy traffic and I'm concerned that Hostgator is going to suspend me soon.
My traffic on Saturday for example was ~2600 unique visitors and ~5000 page views. All of this traffic was from WordPress blogs and a small SMF forum. I've since converted one of the blogs to a static site to limit my CPU usage and I've setup caching for my other WordPress blogs. Advice I've heard on the Hostgator forums is that 7000 page views per day for a database driven site is around the time you should be upgrading and based on my traffic from Saturday (which admittedly was a bit of a spike) I could potentially be receiving 150,000 page views/month, so about 20x the point at which they recommend upgrading at.
Anyhows, in a nutshell I need to upgrade, or risk Hostgator throwing a tantrum at me ... but I don't have a lot of cash to pay for an upgrade Due to my lack of cashflow I've been considering moving to a VPS. The company which has interested me the most is HostV.com who offer a 256 MB (with 1000 MB 'burst' RAM) for only US$39.99 which seems quite reasonable to me.
They say that their 256 MB plan should be able to handle over 5000 page views per day for a WordPress run site, but I'm a little suspect. Do any of you know if this is a reasonable expectation from a 256 MB chunk of a virtual server? I have no idea and am always wary of believing the sales pitch of a random company across the other side of the world.
PHPAuction GPL Enhanced V2.51 Auction Software seems to be the perfect solution for my client, but the PHP requirements are very specific and the host we currently are using doesn't allow anyone to play with .htacess which is the usual workaround. Can anyone recommend a host that they know has the following setup?
Minimal server requirements are as follows: - Apache web server - PHP 4.0.6 or later (see below) with safe_mode=Off - register_globals=on - no open_basedir restriction - MySQL Database - 3.0 or higher - "Cookies" MUST be enabled on your computer!
Alternatively, does anyone know of any auction software that restricts sellers to only the admin?
I have a client that asked me to educate myself about web hosting and make a recommendation to him about where he should be. He currently has a shared hosting server at Network Solutions and finds unexplained slow downs and disk corruption reports in his forums DB unacceptable.
I'm glad I found this site-lots of good info but nothing like throwing up some stats and seeing what people recommend. The client told me he wanted to move to a dedicated server but I'm thinking a VPS might do the trick. Especially if upgraded with dedicated Core as well as RAM such as wiredtree is offering.
Looking for a managed, Unix based server that in a typical month serves 100k unique visitors 230k page views 500Gb of downloads
But needs to be easily upgradeable to handle his expected traffic levels in the next year of monthly visits in the order of: 250k unique visitors 600k page views 1.1Tb of throughput As far as features:
*Currently they use about 15 gigs of disk space. Some of that is inefficient disk management but the bulk is them supporting previous software releases.
*needs to be fully managed
*US datacenter with all the features you guys would expect to have as far as backbone access, security, power backups, etc..
*Backups by provider. Let's say 5 gigs worth since the old software versions don't really need to be backed up.(I'll recommend his own backups as well)
*Either plesk or cpanel
*15 minute hardware SLA is what the client is asking for but i'd like to present some comparisons to 1 hour SLA companies to see how much he'd save.
And finally, i tried to search for the answer to this but the keywords kept bringing up lots of hits without good info. The client sells software so the bandwidth needed is pretty consistent until they release a new version. Then it skyrockets to the point they may have 1500 people trying to download a 50Meg file simultaneously. What is the right way to handle that? Use a CDN or negotiate with the hosting provider to provide burstable bandwidth as needed. As a side note while looking at many offerings I was most surprised that bandwidth seems to sold in large chunks with overage costs hidden.
I'm not quite sure how much of Ram I need for my vps, But I'm going to get 1GB Vps from wiredtree.com
Anyone can tell me what kind of website I would be able to run on such an VPS? If it's just wordpress driven website...
Maybe anyone can share how much traffic your site have and how much ram it's using?
At the moment I have website with about 40k uniques/day and ~100k pageloads per day hosted on shared hosting but they have gave me 3days to find another hosting because they say I use to much of their traffic...
I use zoneedit to point my domain to the server, and a few times their servers don't respond for a few minutes that causes my site to be unaccessible. I was wondering if there was any better way of doing this? Please give me suggestions on what to do to have proper dns.
<VirtualHost xxx.xxx.xxx.xxx:80> ServerAdmin cs@reflexnetworks.net DocumentRoot /home/reflextest/public_html <Directory "/home/reflextest/public_html"> Options Indexes FollowSymLinks AllowOverride None Order allow,deny Allow from all </Directory> ServerName test.reflexnetworks.net ServerAlias www.test.reflexnetworks.net ErrorLog logs/test.reflexnetworks.net-error_log CustomLog logs/test.reflexnetworks.net-access_log common </VirtualHost> ( xxx.xxx.xxx.xxx is the correct IP). The <Directory "/home/reflextest/public_html">...</Directory> part does not make any difference
Permissions: Code: ls -lR reflextest/ reflextest/: total 4 drwxr-xr-x 2 reflextest apache 4096 Mar 25 04:50 public_html
reflextest/public_html: total 4 -rw-r--r-- 1 reflextest apache 22 Mar 25 04:50 index.html This is a source compile of apache. See for yourself: [url]
I have mixed feelings on the mail() function in php. I've seen it send out amazing numbers of emails and yet I keep reading that it is prone to problems. I'm wondering if someone can put an approximation on what you could/would send out in say 60 seconds. I know that there are tonnes of variables, so i'll try and remove a few:
- server hardware is typical of a cpanel/WHM shared hosting environment - running apache/linux - email is say 20kb HTML format - mail is sent in a php script loop, one by one; alternatively, mail() could be called in clusters of x emails - like send 5 emails at once - there are 400 recipients
I wanted to host multiple domains on the same hosting a/c and so I bought GoDaddy's economy hosting which supported multiple domains. But now when I try to add multiple domains, it displays this message -
"The domain path cannot be modified for economy hosting accounts."
That means all domains point to the same folder/content which is not what I wanted. So is there way to put a .htacess file or make an index.php file which can read where the request comes from and automatically redirect them to appropriate folders???
How well does ThePlanet.com handle DMCA complaints?
Recently got shafted by a client for over $30K (3 months of work plus our own out of pocket expenses). To make matters worse, this crook took the PHP source code which my company offers as a hosted solution and installed it on a dedicated server at Theplanet.com.
I have sent DMCA take down notices to theplanet, following their procedure (which is the standard legal procedure) but they have not done anything to the perpetrator. He has managed to spring up 2 websites already, and is no doubt planning to launch more.
Not sure if anyone else has been in this type of situation but I need to get something done about this. I have no doubt in my mind that even if theplanet did shut his sites down, or at least wiped the infringing software from the disks, he would jump over to another host and do the same thing again. My company doesn't have time to waste chasing him around, however the software he has contains a lot of proprietary code that we created and was never intended to be public.
So far both of the domains that he is using have Network Solutions as the registrar. Does Netsol assist with this kind of thing? Hopefully someone with similar experience can chime in with some advice.
I have VPS's with two companies that have managed/semi-managed support (depending on how you define it) and rely on them for a fair amount.
Whenever submitting a support request, I have to submit my root and cPanel passwords. Do people in my situation leave their root password as they would normally and just changing it however often they would if it wasn't given to support? Or, do you change your root/cpanel passwords before making a support request, and then change it back after the ticket is closed?
No offense intended to either of the VPS companies or their personell (that monitor WHT), both have been great. But, the reality is that I take it everyone at the company that has access to submitted tickets now have access to the root password, and since as a customer, I don't know when there has been employee turnover, that seems a security risk.
So, I am curious how others handle this. Not really sure if this belongs here or in the VPS forum, but since it could apply to any type of server/hosting account, I figured it belonged here.
if upgrading to that new server that I'll mention will probably solve my problems. Whatever help you can provide would be greatly appreciated. Below are the details:
In the GMT evenings and nights my current server gets so loaded that every page load takes 10 - 30 seconds. Even the pure html pages will be so slow to load. It seems that after a certain treshold it just suddenly becomes that much slower. Not much middleground there. I have high MaxClients and ServerLimit values now and the error log doesn't say that they are exceeded anymore but that didn't help enough.
I have a high traffic website that is using latest version of apache (2.2.x) with the prefork MPM and apache is optimized, PHP 5.2.5 and APC 3.0.15.
I get 160,000 - 210,000 pageloads per day. 32,000 - 45,000 visits per day.
Most of its pages are PHP but shouldn't be too CPU or databes intensive. Mysql isn't used and I mostly used sharedmem (php's shm functions) for databases. 2 semaphores are quite heavily used but that can't explain how a few more users would make the server serve pages so much slower.
Swap usage is practically 0 and CPU user % usage is like 1 - 2 % and CPU system % is also about the same even during peak times. However the Average Load or whatever that "top" reports is 6 - 9.
My current server scecs: 1 GB Ram, Pentium D 3 ghz, CentOS 5 32bit fully updated.
I load all pictures and even the stylesheet from a secondary server by using href="$secondaryserverIP..." in the html code, so the main server practically just serves the pages.
My new server will have apache with the worker MPM and latest versions of every software. Also its specs are: 2 GB of RAM, Intel Dual Core Xeon 2.40GHz, CentOS 5.1 32bit fully updated.
I have a sophisticated netstat based ddos script that is an improved version of DDoS Deflate and while some of these slowdowns seem to have been caused by attacks that it then was able to defend me from, most of them are not. I am even protected from users who constantly have 7+ connections to my site and if someone has a way too high number of connections, the script won't even check if it constantly has it and the script just bans that user outright. It probably is banning a bunch of innocent proxy users too but that is a small price to pay.
