In the purchase of DreamHost, although the above indicated that the MySQL database is unlimited (unrestricted), but the actual use of the time is limited, dreamhost DNS stability is not very good, use the time need to pay more attention.
To my firsthand experience, I use WordPress mu in DreamHost to build a free hosting blog service, because of the characteristics of WordPress mu, each new user will be in the database to establish more than 10 tables, so, only more than 2000 registered users of WordPress Mu has more than 20,000 tables, although the use of WP Super cache can make a lot of access does not need to access the database, and did not cause any performance problems, but DreamHost said this database table too much, will make their daily automatic backup database timeout error, So they asked to migrate this WordPress mu database to other places.
As a control, I used a asp+access based on another Oblog blog hosting service, the number of users has reached more than 13,000, use without any problems, which has made me suspicious of the availability of WordPress mu, there may be some problems in the way of creating multiple tables , the MySQL database management will be inconvenient, of course, their own independent MySQL database should be better.
In addition, I am also more disappointed with the DreamHost, January 15, due to their own operation errors, and automatically from the majority of users including me deducted a year's credit card fee, caused a large-scale oolong incident, Luckily, 16th they returned 238.8 dollars to my credit card, and I removed my credit card account from the DreamHost after that, lest they should withhold money later.
Finally, according to Bemike method, I ssh login after using the following statement to get my use of this server a total of 388 SSH users and 1124 FTP users, a server put so many sites, no wonder I log on the server so slow.
Grep-i/home//etc/passwd grep/bin/.*sh$ wc-l
Grep-i/home//etc/passwd wc-l