'DataVolume' doesn't exist!

how to recover my data back?

[Volume Status] Data Volume ‘DataVolume’ doesn’t exist!

Version       2.2.9

Volume              Type              Disk       Usage       Size               Status      
DataVolume     Span             Unknown                  Unknown     Failed

Disk         Volume              Size                 Description                                Status      
HDD 4     –     –     –     Not Installed     
HDD 3     DataVolume     931.51 GB     WDC WD10EADS-65L5B1     Good     Safely Remove Disk Clean Disk
HDD 2     DataVolume     931.51 GB     WDC WD10EACS-00D6B1     Good     Safely Remove Disk Clean Disk
HDD 1     DataVolume     931.51 GB     WDC WD10EACS-00D6B1     Good     Safely Remove Disk Clean Disk

Seems that HDD4 is broken. If you have an destop PC you can try to connect the disk with it. When it says that there’s no HDD you know that you must replace it.

How old is your ShareSpace?

Which RAID mode are you using?

i have only 3 hdd, all ok. Raid=span. All data on 1`th hdd. <1tb