Backup of client to DR fails with RDA library load failed (4039130)

Backup of Linux client to DR fails with RDA library load failed

Binary log extract:

Job Message      2017/11/23 16:28:00     84          Media   NVBU01              Job has been assigned device 'Quest DR (DefaultGroup/DR1) - DR01'

Error     2017/11/23 16:28:00     84          Data Plugin        linux_client        Info Function Failed:  'Operation failed'

Error     2017/11/23 16:28:0084 Data Plugin        linux_client        RDA library load failed. Please check vendor's platform requirements

SevereError       2017/11/23 16:28:0084 Data Plugin        linux_client        Failed to initialize backup stream

From NetVault trace :

0   DRLAYER   ???   20109   247   0   143844863333   Unable To Load RDA Library FromDefault And External Install Path

0   DRLAYER   ???   20109   3   0   143844863339   RDA library load failed. Please check vendor's platform requirements

0   PLGLIB   ???   20109   2062   0   143844863665   ForeignRASConnectToDevice() for foreign RAS device failed

From /var/log/librofsDell or /var/log/librofsoca.log logs file:

2017-11-23 16:28:47 nvfs[20131]: [20131] ERROR: [ RDA_OPEN_SERVER ] Failed to resolve server host name: DR01 getaddrinfo error:-3 (c000000100000001)

2017-11-23 16:28:47 nvfs[20131]: [20131] ERROR: [ROFS-OCA] Failed(error c000000100000001) to get server(DR01) info (c000000100000001)