I have multiple hard drives with the same directory hierarchy, for example:

 /media/sda/dir1
 /media/sda/dir2
 ...
 /media/sdb/dir1
 /media/sdb/dir2

Two hard drives with similar names and similar directory names.
I want to create separate symbolic links to dir1 and dir2 on every hard drive.
The easiest way I have found is to use `cp -sR`:

 cp -sR /media/sd*/dir1 /somedir/dir1
 cp -sR /media/sd*/dir2 /somedir/dir2

However, this creates new directories in /somedir which has various side effects, for example, the directory timestamps are useless.

How can I create symbolic links named dir1 and dir2 which link to /media/sd*/dir1 and /media/sd*/dir2?