2283190 - "Unrecoverable I/O or volume error" while loading a backup from HP DataProtector - SAP ASE

• While running a LOAD DATABASE command from a different server
• Backup Server reports errors and the restore aborts:
  
  Backup Server: 4.132.1.1: Attempting to open byte stream device: 'xxxxxx::Time_Stamp::SID::SID::000'
  Backup Server: 4.141.2.24: [109] The 'api_read' call failed for database/archive device while working on stripe device 'xxxxxx::Time_Stamp::SID::SID::000' with error number 246 (Operation would block). Refer to your operating system documentation for further details.
  Backup Server: 6.31.2.4: Volume rejected.
  
  Backup Server: 1.14.2.2: Unrecoverable I/O or volume error. This DUMP or LOAD session must exit.
  Backup Server: 4.125.1.1: Archive API information for device='xxxxxx::Time_Stamp::SID::SID::000':
  
  Vendor application name=Data Protector A.08.10, Library version=221, Message=[Critical] From: xxxxxx@xxx"XXX" ABORT_ON_CLOSE received. Aborting .
  Backup Server: 6.32.2.3: xxxxxx::Time_Stamp::SID::SID::000: volume not valid or not requested (server: , session id: 31.)
  Backup Server: 1.14.2.4: Unrecoverable I/O or volume error. This DUMP or LOAD session must exit.
  Open Server Error: 16144.10.0: Server process '31' is not allocated in 'srv_event'

• SAP Adaptive Server Enterprise (ASE) 15.7
• SAP Adaptive Server Enterprise (ASE) 16.0
• Third party backup tool HP DataProtector

OB2HOSTNAME, api_read, srv_event , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem