Confuse on RAID

[gushim]

Hi,

I have confusing about raid, i have proliant server with 4 hardrive (640) and running RAID 10, and install centos server, some how our space on linux nearly full so we buy 4 the same capacity harddrive.

I try to extend 4 new harddrive to  my existing logical drive via menu logical drive --> extend logical drive, and then process running to long about 4 hours and then finish the process. after i reboot the server our capacity still same as before (1,2TB) not expand teh cpacity.

The question is, what i did it was correct or wrong? and also is it normal expand logical volume take almost 4 hours? and if i was mistaken how to take back the new 4 harddrive  i mean unjoin from existing raid 10.

Appreciate for suggestion

Thanks 

[Torsten.]

Once you extended the virtual drive you need to extend the file system too.