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Dedicated servers are much more expensive vs. shared servers. I'm just wondering if Google will rank you better (much better?) if my site was on a dedicated server with dedicated IP address?
Does Google rank you better if you have a dedicated IP address vs. sharing the same IP address with 200 other sites?
This subject has been discussed quite a bit over the years on WebmasterWorld. Here's a particularly good thread on the question...
Is a dedicated server / IP address better for SEO
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...with 200 other sites?
Considerations for Google can be slightly different, depending on how much you have to do with the 200 other sites, how they're linked, how you're linked, etc. Are the other sites yours? Will you be linking to them? If so, note the comment on the thread above about "class C proximity," which is indeed a whole other discussion.
Dedicated servers are much more expensive vs. shared servers....
A dedicated server and a dedicated IP are very different things. You can get a dedicated IP on a shared server for only a couple of dollars more per month than a shared IP account would cost... at least from those hosting companies that offer them. Some hosting companies are very reluctant to offer dedicated IPs, though, and others offer them freely.
Say you had a site about Apple or Sony products, and you had other sites hosted on the same server that were about iPods or Playstation 3. Google isn't going to rank you down because you are sharing an IP or a server with those other sites.
There are plenty of sites that are PR 7-8 that have sites sharing IPs/servers with them. I won't mention specific links since it's against the TOS, but there are plenty if you poke around.
That said, if you were sharing with spammers or MFAers and Google doesn't like them, then yes, I could see some kind of condition kicking in that might penalize you.
The only reason I would see going to a dedicated server is if the traffic justified it. If you are getting enough traffic to require a dedicated server, you could probably afford to (and you can always dump your other sites on there).
I would also add, and this is very important, if your IP is associated with spammers/MFAers/etc., you could find yourself having email/contact problems because of providers barring email/etc., from your IP. That's all at your ISP though, but it's something to be aware of.
Google isn't going to rank you down because you are sharing an IP or a server with those other sites.
gendude - I didn't say that Google necessarily would "rank you down" for sharing a class C. I simply said that "'class C proximity'... is indeed a whole other discussion," referring to caveman's comment...
As for how the SE's are approaching the issue of C class proximity these days, that is a topic that might warrant a new thread all by itself.
I've have personally observed numerous times that sharing the same class C can have significant adverse effects on rankings of sites with subject matter similarities and overlapping linking patterns. This doesn't apply to all sites on the same class C that share similar topics, but it often applies to sites of common ownership. It is a potential complication that deserved a mention in answering maha's question.
All I can say, when you search in SE for their specific keywords, they are all can still return in page 1 of SERP.
But, when it comes to sending email then I have a problem because it seems like they are some domains with the same IP have been marked as spammer. And most mail servers check email sender based on IP address before do the receiving.
gendude - I didn't say that Google necessarily would "rank you down" for sharing a class C. I simply said that "'class C proximity'... is indeed a whole other discussion," referring to caveman's comment...I was responding directly to the OP and not your post (your post popped up in between the time I hit "Reply" and the time I hit "Submit"), but coming directly after your's, it would seem I was responding to you.
I agree with what you said and with what was in caveman's comment.
I think the OP will be okay sharing as long as they aren't stuck on a server/IP with spammers, etc., and as pointed out, as long as they don't have sites that closely resemble one another - i.e. having a site about iPod Shuffles and a seperate site about iPod Nanos is probably not going to fly with Google.
I went with a dedicated IP/server(s) because I had enough traffic that would cover the cost (barely at first), and I had decided that at some point I would have to have my own, because I didn't want to worry about what another site on the same IP/server was doing, and more importantly, I knew I'd have the traffic at some point that would require it.
I decided it would be easier to move to a dedicated IP/server as quickly as possible, when I could afford some downtime (as minimal as it was), rather than later on when a few hours of downtime could have a much more noticeable impact on things. I also didn't get in a situation where I had to worry about any kind of hard limits forcing me to have to change quickly.
Basically I'm growing into my setup. I could have saved a lot the first six months or so, but the peace of mind I got was more than worth it.