redirect old site to a new site by keeping our SEO ranking and our current link mapped to the new site

Hi experts,

we redesign our website and moved to a different hosting company, in our old site we have some dynamics url with some SEO attached to that, we would like to make sure we are not loosing are SEO ranking so we wanted to use the htaccess file (with 301 redirect) in order to map the new locations for each one of the link. the htaccess file created is about 36MB so I am pretty sure it is too big to be efficient and for the server to time out. how would you accomplish this task without loosing are ranking and also by making sure all the old links are mapped to the new ones?
Thanks
David
tavernyAsked:
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Lucas BishopClick TrackerCommented:
I'm pretty sure that file size is not too big. However, it may prove to have negative performance implications.

Instead of using htaccess, put those rewrite rules inside of a <Directory> section in your main Apache config file:
http://httpd.apache.org/docs/2.0/mod/core.html#directory

This way the list of rewrite rules is loaded into memory when the server first initializes -- as opposed to the full list of rules being read every time a user visits the root domain.
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David Johnson, CD, MVPOwnerCommented:
if you own the domain changing hosting companies will not affect you SEO/Ranking. You simply change the A or CNAME record at your registrar to the new location and wait for it to synchronize.
i.e.
A www.example.com  123.123.123.123
changed to
A www.example.com 312.312.312.123
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