This has to be Raid-ed though. I would suggest you are using some sort 
of hardware Raid as I've never heard of a disk that is 10TB. I thought 
the max we are up to these days is 3.

On 06/06/11 12:25, Sunil M. Dogra wrote:
>
> Hi,
>
> Here is output pf fdisk -l. aslo I am not using any RAID.
>
> With Best Regards
> sunil
>
> fdisk -l
>
>
>
> Disk /dev/cciss/c0d0: 146.7 GB, 146778685440 bytes
> 255 heads, 63 sectors/track, 17844 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>             Device Boot      Start         End      Blocks   Id  System
> /dev/cciss/c0d0p1   *       14001       15000     8032500   83  Linux
> /dev/cciss/c0d0p2               1        4000    32129968+  82  Linux
> swap / Solaris
> /dev/cciss/c0d0p3            4001       10000    48195000   83  Linux
> /dev/cciss/c0d0p4           10001       14000    32130000    5  Extended
> /dev/cciss/c0d0p5           10001       14000    32129968+  83  Linux
>
> Partition table entries are not in disk order
>
> Disk /dev/cciss/c0d1: 10001.7 GB, 10001711325184 bytes
> 255 heads, 63 sectors/track, 1215972 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>             Device Boot      Start         End      Blocks   Id  System
> /dev/cciss/c0d1p1               1      267350  2147483647+  ee  EFI GPT
>
>
> On Mon, Jun 6, 2011 at 11:38 AM, jdow <[log in to unmask]
> <mailto:[log in to unmask]>> wrote:
>
>     Can you cut and paste the fdisk -l output into an email? It can tell
>     you a lot about what the drives really amount to.
>
>     Are you running it as a RAID with checksum or simply striping? Your
>     numbers suggest something like RAID 6.
>
>     This is the system I am currently prepping to use as a name server,
>     firewall, and email tool for a two person multi-computer (and a lot
>     of "gadgets") network here.
>
>     Disk /dev/sda: 500.1 GB, 500107862016 bytes
>     255 heads, 63 sectors/track, 60801 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: 0x00007e83
>
>
>        Device Boot      Start         End      Blocks   Id  System
>     /dev/sda1   *           1          64      512000   83  Linux
>     Partition 1 does not end on cylinder boundary.
>     /dev/sda2              64       60802   487873536   8e  Linux LVM
>
>     The header portion is REALLY interesting. It's a 500 gigabyte
>     drive. But, it's only 488386584 1k blocks, 476940 1 meg blocks, or
>     465 1 gigabyte blocks when speaking of 1024 byte entities rather
>     than 1000 byte entities.
>
>     Your 12 1 terabyte disks striped array is only 10.91 TeraBytes
>     in computer speak - 1024 per K rather than 1000 per k. Could
>     that explain your discrepancy?
>
>     {^_^}   Joanne (First explained this to others in 1986. IMAO
>            disks should be advertised both ways for clarity.)
>
>
>     On 2011/06/05 22:11, Sunil M. Dogra wrote:
>
>         Hi,
>
>         Ans: / = ~45GB
>         /boot =~2GB
>         /swap =~16GB
>
>
>         I have another question
>
>         why gparted, fdisk -l, system-config-lvm are giving different
>         outputs for
>         12TB but giving the same output for 500GB
>
>         With Regards
>         sunil
>
>
>         On Mon, Jun 6, 2011 at 3:28 AM, jdow <[log in to unmask]
>         <mailto:[log in to unmask]>
>         <mailto:[log in to unmask] <mailto:[log in to unmask]>>> wrote:
>
>             On 2011/06/03 06:47, Alec T. Habig wrote:
>
>                 James Holland writes:
>
>                     Don't know why this is... But check how big your
>         other partitions
>                     are using gparted.
>
>
>                 Could it be that he's comparing the "1TB" drives he's
>         bought (which are
>                 marketed as decimal 1x10^12 bytes) with the expected
>         (binary) 2^40
>                 bytes?
>
>                 That's a 10% reduction in perceived space.  If the disk
>         format has also
>                 reserved the traditional (and now obsolete) 10% for root
>         use only, then
>                 suddenly we're 2.5 TB down from what one would naively
>         expect after
>                 clicking on "Newegg, please send me 12 terabyte drives".
>
>                 gparted will show the whole capacity (ignoring this root
>         reserve), but
>         "df" won't.
>
>
>             How big are /, /boot, and /swap?
>
>
>
>
>
>
>
>             (I'm old fashioned and silly, I like "/dev/fdisk -l /dev/sda
>          >foo" as
>             a way of exporting the actual partitioning. I am not sure
>         fdisk would
>             be happy with 12 TB, though. But showing us the actual
>         partitioning
>             might be a good idea.)
>
>             {o.o}   Joanne. (Imprinted on the old tools back in about
>         '88 on of
>                    all things "Amiga Unix.")
>
>
>