"Google started in in 1998 with a few AIX servers".
Well not really, using the Wiki we get this, and running Linux from the very beginning of course.
"Original hardware
The original hardware (circa 1998) that was used by Google when it was located at Stanford University included:[3]
Sun Microsystems Ultra II with dual 200 MHz processors, and 256 MB of RAM. This was the main machine for the original Backrub system.
2 × 300 MHz dual Pentium II servers donated by Intel, they included 512 MB of RAM and 10 × 9 GB hard drives between the two. It was on these that the main search ran.
F50 IBM RS/6000 donated by IBM, included 4 processors, 512 MB of memory and 8 × 9 GB hard disk drives. ......................."
https://en.wikipedia.org/wiki/Google_Data_Centers