reServer J2032 disc mounting error

I am trying to mount the disc back to the server but getting exception. Any help will be appreciated.

root@abhishek-desktop:/home/abhishek# fdisk -l
Disk /dev/sda: 238.5 GiB, 256060514304 bytes, 500118192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

root@abhishek-desktop:/# sudo mount -t auto -v /dev/sda1 /mnt
NTFS signature is missing.
Failed to mount ‘/dev/sda’: Invalid argument
The device ‘/dev/sda’ doesn’t seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
root@abhishek-desktop:/#