Hello,
Im am posting this, to determine the possible effects of server downtime, and the effects it can cause to the number of indexed pages in google.
What happened is to me is: 1 server had some downtime, total of 3 days with up to 11% downtime per day within the period of 1 weeks.
Summary downtime:
Data from webmaster tools:
day 1: 3% downtime - 12 errors
day 4: 9% downtime - 25 errors
day 11: 11% downtime - 98 errors
The Result: 2 days after the 3rd day with downtime, approx 95% of the pages are deindexed.
By using the "site:" command i have the following data:
site 1: 4900 pages reported on search page 1 -> actually indexed 132
site 2: 700 pages reported on search page 1 -> acually indexed 92
site 3: 21000 pages indexed on search page 1 -> actually indexed 143
8 days have passed with 0 crawl errors, since the last downtime.
For the largest site, the "traffic" details in webmaster report:
10-6 : 280 pageviews {before many pages were dropped}
11-6 : 8 pageviews
12-6 : 10 pageviews
13-6 : 78 pageviews
So, the main question would be:
Can a few hours hours of downtime, spread over multiple days, within the timespan of 12 days week result in deindexing of approx 95% of the pages per domain hosted on the server.
Secundary Question would be:
Is it more likely that this is the result of a penalty.
Regards,
Arjan