Our server broke down last Thursday for nearly one hour. The traffic almost went down the minute the server went down. Almost a week passed, the traffic is still down. Should I do something after the server was repaired? Thank you!
Go into Webmaster Tools under site health and fetch your index page with "fetch as Googlebot", if it fetch's, you have no server side issues (also check for other warnings in Webmasters). Then send the page to index. A server side issue (for such a short period of time) should not effect your rankings. The bot would try multiple times to find the URL. And if they couldn't find it, once found your rankings should appear were they were. Google keep a record of your site (safe keeping) for 90 days. You could possibly have fallen pray to an algorithm filter. Send your page to index with fetch as GoogleBot and wait around 2 days. If that was the issue (server side) your site should pop up back to were it was prior to the server side issue. And make sure your page is not blocked (noindex meta and robots.txt) if it is blocked then it WON'T fetch with GoogleBot.