Et10k-Mounting of Hdd Size Incorrect

[birdman]

As for the file you have requested had been attached here.

Thanks. This contains:

Jan  1 07:30:22 et10000 user.notice kernel: [    7.713000] sd 0:0:0:0: [sda] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
...
Jan  1 07:30:22 et10000 user.warn kernel: [    8.385000] EXT4-fs (sda1): warning: mounting fs with errors, running e2fsck is recommended
...
Oct 14 07:21:13 et10000 user.notice kernel: [  332.768000] EXT4-fs (sda1): error count since last fsck: 8352
Oct 14 07:21:13 et10000 user.notice kernel: [  332.768000] EXT4-fs (sda1): initial error at time 1450938324: ext4_mb_generate_buddy:757
Oct 14 07:21:13 et10000 user.notice kernel: [  332.768000] EXT4-fs (sda1): last error at time 1507906294: ext4_mb_generate_buddy:758

So you might wish to run a filesystem check on that device.
As for the USB device, it shows up as:

Oct 14 08:04:29 et10000 user.notice kernel: [ 2929.610000] sd 2:0:0:0: [sdb] 9767541168 512-byte logical blocks: (5.00 TB/4.55 TiB)
...
Oct 14 08:04:43 et10000 user.warn kernel: [ 2942.801000] EXT4-fs (sdb1): warning: mounting fs with errors, running e2fsck is recommended
Oct 14 08:04:43 et10000 user.info kernel: [ 2942.806000] EXT4-fs (sdb1): recovery complete

So you might like to check that one too. Are you remembering to unmount it before you unplug it?

Anyway - the box is seeing that USB device as a 5TB drive.

The problem now is I am not able to backup files from Et10k to 5Tb hdd because it is not reading the 5Tb as it is but at 3Tb. Please help

No. It is seeing it as 5TB, but for some reason ViX is reporting it to have the same size as the other drive.

I'd suggest running a disk check on both of them, then checking with the mount manager what you have mounted