Filesystem still has errors (ReadyNAS 3200)

Hello, I have ReadyNAS 3200 with data volume failures.

 

After a disk failed, the server restarted and after running automatic checks, it was unable to recover the volume data system.

 

I put below part of logs messages. Any ideas to recover it? Thanks.

 

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Inode 6074141 is too big.  Truncate? yes
 
Block #656409612 (2845762991) causes directory to be too big.  CLEARED.
Block #656409613 (1413754900) causes directory to be too big.  CLEARED.
Block #656409614 (710395238) causes directory to be too big.  CLEARED.
Block #656409615 (2605083730) causes directory to be too big.  CLEARED.
Block #656409616 (627206157) causes directory to be too big.  CLEARED.
Block #656409617 (835375234) causes directory to be too big.  CLEARED.
Block #656409618 (1721141576) causes directory to be too big.  CLEARED.
Inode 6074141 has illegal block(s).  Clear? yes
 
Illegal block #656409619 (4210973595) in inode 6074141.  CLEARED.
Error storing directory block information (inode=6074141, block=0, num=200617629): Memory allocation failed
 
/dev/c/c: ***** FILE SYSTEM WAS MODIFIED *****
e2fsck: aborted
 
/dev/c/c: ***** FILE SYSTEM WAS MODIFIED *****
 
 
 
***** File system check performed at Mon Nov 19 09:30:10 CET 2018 *****
fsck 1.42.12 (29-Aug-2014)
/dev/c/c: One or more block group descriptor checksums are invalid.  FIXED.
/dev/c/c: Group descriptor 4 checksum is 0x0000, should be 0xf858.   
 
/dev/c/c: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
    (i.e., without -a or -p options)