[j-nsp] cannot see hard disk

[Erol KAHRAMAN]

Hi all,

I have m7i box. It restarted today and hard disk went off. I cannot see 
it in my storage devices.

Router1> show system storage
Filesystem              Size       Used      Avail  Capacity   Mounted on
/dev/ad0s1a             217M        61M       139M       30%  /
devfs                    16K        16K         0B      100%  /dev/
/dev/vn0                 16M        16M         0B      100%  
/packages/mnt/jbase
/dev/vn1                 65M        65M         0B      100%  
/packages/mnt/jkernel-8.4R1.13
/dev/vn2                8.5M       8.5M         0B      100%  
/packages/mnt/jpfe-M7i-8.4R1.13
/dev/vn3                2.6M       2.6M         0B      100%  
/packages/mnt/jdocs-8.4R1.13
/dev/vn4                 22M        22M         0B      100%  
/packages/mnt/jroute-8.4R1.13
/dev/vn5                8.0M       8.0M         0B      100%  
/packages/mnt/jcrypto-8.4R1.13
/dev/vn6                 14M        14M         0B      100%  
/packages/mnt/jpfe-common-8.4R1.13
mfs:136                  62M       1.0K        57M        0%  /tmp
mfs:150                  62M        16M        41M       28%  /mfs
/dev/ad0s1e              24M        18K        22M        0%  /config
procfs                  4.0K       4.0K         0B      100%  /proc

How i can get it back. Any idea?