Nobody can guarantee that an Import will work, but your only other option is to call a data recovery service - be prepared to spend upwards of $10,000 for recovery.  Importing the config will NOT damage your ability to recover the data through a data recovery service, but it may save you hours or days of downtime and thousands of dollars.  ALL the import does is tell the controller to use that configuration - it does not erase or overwrite any data on the disks.  If you import and it doesn't work, THEN you can worry about data recovery or restoring from backup (which I'm guessing you don't have). Which RAID controller are you using?  If a PERC 5, what is the firmware version (on the CTRL MGMT screen in CTRL-R)?
I have a Raid 5 array with 8 disk Two of these have "foreign" status and the OS doesnt boot. What can I do in order to get my information, there isn't any physical damage as long S as know but I dont know what to do because I not an expert in this issues.  What happen if I retrieve these disk out from the server? I still can access the resto of the data? If I import the foreign configuration, can I retrieve the data?  
PowerEdge 2950 RAID Failure