Looks like it started here:
Feb 4 20:44:21 ramiii unassigned.devices: Mount of '/dev/sda2' failed. Error message: ntfs_attr_pread_i: ntfs_pread failed: Input/output error Failed to read NTFS : Input/output error NTFS is either inconsistent, or there is a hardware fault, or it's a SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows then reboot into Windows twice. The usage of the /f parameter is very important! If the device is a SoftRAID/FakeRAID then first activate it and mount a different device under the /dev/mapper/ directory, (e.g. /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation for more details. Failed to sync device /dev/sda2: Input/output error Failed to close volume /dev/sda2: Input/output error
Looks to be a hardware error came up before you converted from ntfs.
It also appears you removed the disk while it was mounted:
Feb 6 00:21:53 ramiii unassigned.devices: Partition 'Home' could not be mounted.
Feb 6 00:21:53 ramiii unassigned.devices: Running device script: 'Home.sh' with action 'ERROR_MOUNT'.
Feb 6 00:21:54 ramiii mount.exfat: failed to read cluster 0x12
Feb 6 00:21:54 ramiii mount.exfat: failed to open directory '/TV Shows'
Feb 6 00:21:54 ramiii kernel: Buffer I/O error on dev sdp1, logical block 2816, async page read
Feb 6 00:21:56 ramiii mount.exfat: failed to read cluster 0x13
Feb 6 00:21:56 ramiii mount.exfat: failed to open directory '/Movies'
Feb 6 00:21:56 ramiii kernel: Buffer I/O error on dev sdp1, logical block 2848, async page read
Feb 6 00:21:57 ramiii mount.exfat: failed to read cluster 0x4419a
Feb 6 00:21:57 ramiii mount.exfat: failed to open directory '/ebooks'
Feb 6 00:21:57 ramiii kernel: Buffer I/O error on dev sdp1, logical block 8928256, async page read
Feb 6 00:23:12 ramiii webGUI: Successful login user root from 192.168.11.95
Feb 6 00:23:39 ramiii kernel: usb 16-1.1: USB disconnect, device number 24
Reboot your server to clear the improper mount and then figure out what is wrong with the USB disk.