disk failure?

[L]

Hi
The disk utility shows one of my disks are failling. I check it using

sudo e2fsck -f -c -v /dev/sdb1
e2fsck 1.42 (29-Nov-2011)
Checking for bad blocks (read-only test):   0.00% done, 0:00 elapsed.
(0/0/0 errdone
500G: Updating bad block inode.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information

500G: ***** FILE SYSTEM WAS MODIFIED *****

  124186 inodes used (0.41%)
    2600 non-contiguous files (2.1%)
     195 non-contiguous directories (0.2%)
         # of inodes with ind/dind/tind blocks: 0/0/0
         Extent depth histogram: 120688/867
52973023 blocks used (43.39%)
       0 bad blocks
       1 large file

  118955 regular files
    2148 directories
       0 character device files
       0 block device files
       0 fifos
       0 links
    3074 symbolic links (2623 fast symbolic links)
       0 sockets
--------
  124177 files

I am confused if this disk is really failing??

Yuan

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