hello i have a dell poweredge 1950 2x xeon and 4gb of ram and 1x 146gb sas 15k hdd perc 5/i raid card

i am trying to install any operating system mainly linux and all i get is this over and over:

the ext4 file system creation partition #1 of scsi6 (2,0,0) (sdc) failed‏ 

this was while trying to install debian and failing i have checked my raid settings and its is as follows:

vd 0 = 117.187 gb

free space 19392

i cant see whats wrong help please

thanks callum