2477935 - [70012001] connection refused, [110046] Communication failure with service 'nameserver' in HANA Backup

When performing a backup, the following error occurs in the traces:

[15843]{349699}[-1/-1] 2017-05-22 15:06:23.489659 i Backup BackupMgr_Manager.cpp(00956) : SAVE DATA started
[8864]{349699}[-1/-1] 2017-05-22 15:06:23.498268 e Backup BackupMgr_ExecutorJob.cpp(00158) : Sending PrepareGlobalSavePoint xxxxxxxxx:34201: exception 1: no.70012001 (TrexNet/EndPoint.cpp:341)
connection refused
exception 1: no.110046 (Backup/Manager/impl/BackupMgr_ExecutorJob.cpp:153)
Communication failure with service 'nameserver' at 'xxxxxxxxx:34201' responsible for the volume '1'
exception throw location:
[8865]{349699}[-1/-1] 2017-05-22 15:06:23.502841 e Backup BackupMgr_ExecutorJob.cpp(00158) : Sending PrepareGlobalSavePoint xxxxxxxxx:34207: exception 1: no.70012001 (TrexNet/EndPoint.cpp:341)
connection refused
exception 1: no.110046 (Backup/Manager/impl/BackupMgr_ExecutorJob.cpp:153)
Communication failure with service 'xsengine' at 'xxxxxxxxx:34207' responsible for the volume '2'
exception throw location:
[8864]{349699}[-1/-1] 2017-05-22 15:06:23.498268 e Backup BackupMgr_ExecutorJob.cpp(00158) : 1: 0x00007f9e28a31c33 in TrexNet::NetException::NetException(TrexNet::NetException::_ExceptionType, char const*, unsigned int, char const*, char const*)+0x50 at Exception.cpp:93 (libhdbbasement.so)
2: 0x00007f9e28a2edbe in TrexNet::ServerRep::openNewChannel(char const*, ltt::smartptr_handle<Crypto::Configuration>&)+0x1da at EndPoint.cpp:341 (libhdbbasement.so)
3: 0x00007f9e28a4125a in TrexNet::Requestor::getChannel(char const*, unsigned short, char, ltt::smartptr_handle<Crypto::Configuration>&)+0x116 at Requestor.cpp:132 (libhdbbasement.so)
4: 0x00007f9e28a358ea in TrexNet::Request::init(char const*, TrexNet::HostAndPort const&, char, ltt::smartptr_handle<Crypto::Configuration>&)+0xe6 at string.hpp:589 (libhdbbasement.so)
5: 0x00007f9e28a36968 in TrexNet::Request::Request(char const*, char const*, unsigned short, char)+0x244 at Request.cpp:706 (libhdbbasement.so)
6: 0x00007f9e39c775ac in Backup::BackupMgr_ExecutorJob::run(Execution::JobObject&)+0x238 at BackupMgr_ExecutorJob.cpp:114 (libhdbbackup.so)
7: 0x00007f9e2769711b in Execution::JobObjectImpl::run(Execution::JobWorker*)+0x1217 at JobExecutorImpl.cpp:1098 (libhdbbasis.so)
8: 0x00007f9e276a2794 in Execution::JobWorker::runJob(ltt::smartptr_handle<Execution::JobObjectForHandle>&)+0x3b0 at JobExecutorThreads.cpp:217 (libhdbbasis.so)
9: 0x00007f9e276a4ff7 in Execution::JobWorker::run(void*&)+0x1f3 at JobExecutorThreads.cpp:436 (libhdbbasis.so)
10: 0x00007f9e276fd5f7 in Execution::Thread::staticMainImp(void**)+0x743 at Thread.cpp:463 (libhdbbasis.so)
11: 0x00007f9e276fec88 in Execution::Thread::staticMain(void*)+0x34 at ThreadMain.cpp:26 (libhdbbasis.so)
[39941]{349699}[-1/-1] 2017-05-22 15:06:23.507783 e Backup BackupMgr_ExecutorJob.cpp(00158) : Sending PrepareGlobalSavePoint xxxxxxxxx:34203: exception 1: no.70012001 (TrexNet/EndPoint.cpp:341)
connection refused
exception 1: no.110046 (Backup/Manager/impl/BackupMgr_ExecutorJob.cpp:153)
Communication failure with service 'indexserver' at 'xxxxxxxxx:34203' responsible for the volume '3'
exception throw location:
[8865]{349699}[-1/-1] 2017-05-22 15:06:23.502841 e Backup BackupMgr_ExecutorJob.cpp(00158) : 1: 0x00007f9e28a31c33 in TrexNet::NetException::NetException(TrexNet::NetException::_ExceptionType, char const*, unsigned int, char const*, char const*)+0x50 at Exception.cpp:93 (libhdbbasement.so)
2: 0x00007f9e28a2edbe in TrexNet::ServerRep::openNewChannel(char const*, ltt::smartptr_handle<Crypto::Configuration>&)+0x1da at EndPoint.cpp:341 (libhdbbasement.so)
3: 0x00007f9e28a4125a in TrexNet::Requestor::getChannel(char const*, unsigned short, char, ltt::smartptr_handle<Crypto::Configuration>&)+0x116 at Requestor.cpp:132 (libhdbbasement.so)
4: 0x00007f9e28a358ea in TrexNet::Request::init(char const*, TrexNet::HostAndPort const&, char, ltt::smartptr_handle<Crypto::Configuration>&)+0xe6 at string.hpp:589 (libhdbbasement.so)
5: 0x00007f9e28a36968 in TrexNet::Request::Request(char const*, char const*, unsigned short, char)+0x244 at Request.cpp:706 (libhdbbasement.so)
6: 0x00007f9e39c775ac in Backup::BackupMgr_ExecutorJob::run(Execution::JobObject&)+0x238 at BackupMgr_ExecutorJob.cpp:114 (libhdbbackup.so)
7: 0x00007f9e2769711b in Execution::JobObjectImpl::run(Execution::JobWorker*)+0x1217 at JobExecutorImpl.cpp:1098 (libhdbbasis.so)
8: 0x00007f9e276a2794 in Execution::JobWorker::runJob(ltt::smartptr_handle<Execution::JobObjectForHandle>&)+0x3b0 at JobExecutorThreads.cpp:217 (libhdbbasis.so)
9: 0x00007f9e276a4ff7 in Execution::JobWorker::run(void*&)+0x1f3 at JobExecutorThreads.cpp:436 (libhdbbasis.so)
10: 0x00007f9e276fd5f7 in Execution::Thread::staticMainImp(void**)+0x743 at Thread.cpp:463 (libhdbbasis.so)
11: 0x00007f9e276fec88 in Execution::Thread::staticMain(void*)+0x34 at ThreadMain.cpp:26 (libhdbbasis.so)
[39941]{349699}[-1/-1] 2017-05-22 15:06:23.507783 e Backup BackupMgr_ExecutorJob.cpp(00158) : 1: 0x00007f9e28a31c33 in TrexNet::NetException::NetException(TrexNet::NetException::_ExceptionType, char const*, unsigned int, char const*, char const*)+0x50 at Exception.cpp:93 (libhdbbasement.so)
2: 0x00007f9e28a2edbe in TrexNet::ServerRep::openNewChannel(char const*, ltt::smartptr_handle<Crypto::Configuration>&)+0x1da at EndPoint.cpp:341 (libhdbbasement.so)
3: 0x00007f9e28a4125a in TrexNet::Requestor::getChannel(char const*, unsigned short, char, ltt::smartptr_handle<Crypto::Configuration>&)+0x116 at Requestor.cpp:132 (libhdbbasement.so)
4: 0x00007f9e28a358ea in TrexNet::Request::init(char const*, TrexNet::HostAndPort const&, char, ltt::smartptr_handle<Crypto::Configuration>&)+0xe6 at string.hpp:589 (libhdbbasement.so)
5: 0x00007f9e28a36968 in TrexNet::Request::Request(char const*, char const*, unsigned short, char)+0x244 at Request.cpp:706 (libhdbbasement.so)
6: 0x00007f9e39c775ac in Backup::BackupMgr_ExecutorJob::run(Execution::JobObject&)+0x238 at BackupMgr_ExecutorJob.cpp:114 (libhdbbackup.so)
7: 0x00007f9e2769711b in Execution::JobObjectImpl::run(Execution::JobWorker*)+0x1217 at JobExecutorImpl.cpp:1098 (libhdbbasis.so)
8: 0x00007f9e276a2794 in Execution::JobWorker::runJob(ltt::smartptr_handle<Execution::JobObjectForHandle>&)+0x3b0 at JobExecutorThreads.cpp:217 (libhdbbasis.so)
9: 0x00007f9e276a4ff7 in Execution::JobWorker::run(void*&)+0x1f3 at JobExecutorThreads.cpp:436 (libhdbbasis.so)
10: 0x00007f9e276fd5f7 in Execution::Thread::staticMainImp(void**)+0x743 at Thread.cpp:463 (libhdbbasis.so)
11: 0x00007f9e276fec88 in Execution::Thread::staticMain(void*)+0x34 at ThreadMain.cpp:26 (libhdbbasis.so)
[15843]{349699}[-1/-1] 2017-05-22 15:06:23.546638 i Backup BackupMgr_DeltaBackupTracker.cpp(00759) : [DBT] received BackupCatalog_DataBackupFinishEntry for 1495458383488
[15843]{349699}[-1/-1] 2017-05-22 15:06:23.546652 e Backup BackupMgr_Manager.cpp(01264) : SAVE DATA finished with error: [447] backup could not be completed, [70012001] connection refused, [110046] Communication failure with service 'nameserver' at 'xxxxxxxxx:34201' responsible for the volume '1'

SAP HANA 1.0, platform edition.

SAVE DATA, error 447, error 70012001, error 110046, connection refused, communication failure, nameserver, blocked port, wrong configuration parameter, internal_hostname_resolution, multi-host system. , KBA , HAN-DB-BAC , SAP HANA Backup & Recovery , Problem