[4.3-3810][ERR] Bad state for SHR Volume

RAID volume marked as bad fit on each start.

My configuration : ESXi 5.5, 4 RDM disks attached to main SCSI controller.

/var/log/messages tells me:

Nov 29 07:35:42 Neo-Diskstation kernel: [   16.273149] md: invalid raid superblock magic on sdc5                                                
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.273323] md: sdc5 does not have a valid v0.90 superblock, not importing!                      
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.294797] md: invalid raid superblock magic on sdc6                                   
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.294970] md: sdc6 does not have a valid v0.90 superblock, not importing!                                     
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.394868] md: invalid raid superblock magic on sdd5                      
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.395057] md: sdd5 does not have a valid v0.90 superblock, not importing!                          
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.417764] md: invalid raid superblock magic on sdd6                                
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.417935] md: sdd6 does not have a valid v0.90 superblock, not importing!                                   
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.474752] md: invalid raid superblock magic on sde5                                      
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.474925] md: sde5 does not have a valid v0.90 superblock, not importing!                                               
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.534772] md: invalid raid superblock magic on sdf5                                                           
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.534943] md: sdf5 does not have a valid v0.90 superblock, not importing!                                   
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.535681] md: sdb2 has different UUID to sdb1                                                               
[...]
Nov 29 07:35:42 Neo-Diskstation kernel: [   16.805774] set group disks wakeup number to 4, spinup time deno 7                                                        
[...]
Nov 29 07:35:44 Neo-Diskstation synodiskpathparse: disk_path_parse.c:101 Unknown diskType                                                                            
Nov 29 07:35:45 Neo-Diskstation kernel: [   21.814675] md: md1: set sdb2 to auto_remap [0]                                                                           
insmod: can't insert '/lib/modules/acpi-cpufreq.ko': Input/output error                                                                                              
insmod: can't insert '/lib/modules/aesni-intel.ko': No such device

When I try to repair it via DSM Storage Manager:

Nov 29 10:11:42 Neo-Diskstation storagehandler.cgi: raid_add.c:56 Failed to '/sbin/mdadm /dev/md0 -a /dev/sdd1 > /tmp/raid_add.log 2>&1', WEXITSTATUS(err) = 1, ret =
Nov 29 10:11:42 Neo-Diskstation storagehandler.cgi: raid_add_robust_check.c:62 Failed to add /dev/sdd1 into /dev/md0, errno=No such file or directory
Nov 29 10:11:42 Neo-Diskstation storagehandler.cgi: raid_system_repair.c:26 Fail to add disk to system raid
Nov 29 10:11:42 Neo-Diskstation storagehandler.cgi: raid_system_repair.c:68 Fair to repair system raid(Root)
Nov 29 10:11:42 Neo-Diskstation storagehandler.cgi: space_lib.cpp:964 Fail to repair system raid
Nov 29 10:12:31 Neo-Diskstation kernel: [ 9427.910041] md: md0: set sde1 to auto_remap [0]                                    
Nov 29 10:12:31 Neo-Diskstation kernel: [ 9427.910173] md: md0: set sdf1 to auto_remap [0]
Nov 29 10:12:31 Neo-Diskstation kernel: [ 9427.910290] md: md0: set sdc1 to auto_remap [0]
Nov 29 10:12:31 Neo-Diskstation kernel: [ 9427.910404] md: md0: set sdd1 to auto_remap [0]
Nov 29 10:12:31 Neo-Diskstation kernel: [ 9427.910520] md: md0: set sdb1 to auto_remap [0]

Contents of /tmp/raid_add.log :

mdadm: Cannot open /dev/sdd1: Device or resource busy

Thanks.