NetWorker: Windows client BBB restore fails "An existing connection was forcibly closed by the remote host"
Zusammenfassung: NetWorker 19.9 windows client Block Based Backup (BBB) restores failed with error: "nsriscsi: Unable to get ISCSI Header. An existing connection was forcibly closed by the remote host". ...
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Symptome
NetWorker 19.9 windows client Block Based Backup (BBB) completed successfully, however BBB restore failed with error:
nsriscsi: unable to get ISCSI Header An existing connection was forcibly closed by the remote host.Ursache
Windows ISCSI timeout caused NetWorker BBB restore failure.
Lösung
In the Windows registry:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}\Microsoft iSCSI Initiator\Parameters]
Increase the following parameter from default value to max value:
FirstBurstLength: The default value is 65536 (64 KB); Increase to 262144 (256 KB)
MaxBurstLength: The default value is 262144 (256 KB); Increase to 327680 (320 KB)
MaxRequestHoldTime: The default value is 60 s; Increase to 90 s.
MaxTransferLength: The default value is 262144 (256 KB); Increase to 327680 (320 KB)
After increasing windows ISCSI parameters, the Windows client BBB restore completes successfully.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}\Microsoft iSCSI Initiator\Parameters]
Increase the following parameter from default value to max value:
FirstBurstLength: The default value is 65536 (64 KB); Increase to 262144 (256 KB)
MaxBurstLength: The default value is 262144 (256 KB); Increase to 327680 (320 KB)
MaxRequestHoldTime: The default value is 60 s; Increase to 90 s.
MaxTransferLength: The default value is 262144 (256 KB); Increase to 327680 (320 KB)
After increasing windows ISCSI parameters, the Windows client BBB restore completes successfully.
Betroffene Produkte
NetWorkerProdukte
NetWorker FamilyArtikeleigenschaften
Artikelnummer: 000223519
Artikeltyp: Solution
Zuletzt geändert: 20 Mai 2026
Version: 3
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