I am leasing a dedicated server with 1 tb of space. Server has been imaged. Now I need to partition.

I am not an IT professional and while I can manage SSH commands, I do not know what criteria I should use to allocate space on the drive. I think I have provided some relevant data on the server below. Any suggestions would be greatly appreciated. Thank you!

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 4.0G 374M 3.7G 10% /
/dev/mapper/vg00-usr 4.0G 1.4G 2.5G 36% /usr
/dev/mapper/vg00-var 4.0G 323M 3.5G 9% /var
/dev/mapper/vg00-home 4.0G 136M 3.7G 4% /home
none 3.9G 0 3.9G 0% /tmp
 3.9G 0 3.9G 0% /tmp

 fdisk -l

Disk /dev/sda: 1000.2 GB, 1000204402688 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xbd30f77d

 Device Boot Start End Blocks Id System
/dev/sda1 1 523 4200966 83 Linux
/dev/sda2 524 785 2104515 82 Linux swap / Solaris
/dev/sda3 786 121601 970454520 8e Linux LVM

Disk /dev/mapper/vg00-usr: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg00-var: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg00-home: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

# pvs
 PV VG Fmt Attr PSize PFree
 /dev/sda3 vg00 lvm2 a-- 925.50g 913.50g