Commands to use to partition a new 3TB disk with parted.

[ ~]# parted /dev/sdg
GNU Parted 2.1
Using /dev/sdg
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                            
Error: /dev/sdg: unrecognised disk label                                  
(parted) mklabel gpt                                                  
(parted) mkpart primary ext3 1 -1                                         
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? C                                                          
(parted) print                                                            
Model: ASMT 2105 (scsi)
Disk /dev/sdg: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start  End  Size  File system  Name  Flags

(parted) mkpart                                                           
Partition name?  []?                                                      
File system type?  [ext2]? ext3                                           
Start? 0%                                                                 
End? 100%

Using percentages worked better than trying to specify the start/stop sectors. Not sure why.

[ ~]# mkfs.ext3 /dev/sdg1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
183148544 inodes, 732566272 blocks
36628313 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
22357 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
	32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
	4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 
	102400000, 214990848, 512000000, 550731776, 644972544

[ ~]# tune2fs -c0 -i0 /dev/sdg1