i can't format long time Unit S0
adapter ARECA

log:

Jul 5 10:23:28 nas Manager: Can't add unit sda with sector size 4096! Sector size must be 512!
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 0
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 56
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 48
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 40
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 32
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 24
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 16
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 8
Jun 25 10:58:18 nas kernel: end_request: I/O error, dev sda, sector 0
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 25 10:58:18 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 0
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 56
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 48
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 40
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 32
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 24
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 16
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 8
Jun 24 14:11:47 nas kernel: end_request: I/O error, dev sda, sector 0
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:47 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 0
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 56
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 48
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 40
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 32
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 24
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0
Jun 24 14:11:45 nas kernel: end_request: I/O error, dev sda, sector 16
Jun 24 14:11:45 nas kernel: arcmsr0 block 'read/write' command with gone raid volume Cmd=28,TargetId=0,Lun=0