When a VTL is created on the NetVault server or SmartClient but the VTL is created using NAS storage on the same LAN or a different LAN the large backups fail.
Looking at the binary log , NetVault trace and the wire shark all at the same time we see a network error “STATUS_OBJECT_NAME_NOT_FOUND” causing a data channel failure in NetVault as seen below. As we can see this error is logged while accessing the share \\10.100.0.32 that the VTL is created on from the NetVault server “NVserver01”.
From binary log:
Job Message 2017/02/21 16:41:40 85 Media NVserver01 (C001-Storage) Media in 'DRIVE 1:FAMED-BCKPRD01' assigned to job ready for data transfer
Error 2017/02/21 16:42:09 85 Media NVserver01 NVserver01 \\10.100.0.32\tbu2jk99si\VTL01\C001\drives\1: had channel error
NetVault trace extract:
4 NET :03368 2 0 164209.882353 TRUE = NetClose(0138A138) 516
0 DEVMGR :03368 776 0 164209.882364 Data Channel Connect: FAILURE
2 DEVMGR :03368 812 0 164209.882369 DevMgrChannelError() - FALSE = bChannelError, FALSE = bMediaError, FALSE = bAbort, FALSE = bStop
from wireshark trace:
12773 2017-02-21 16:42:38.840286000 10.100.0.100 10.100.0.32 SMB 186 Trans2 Request, QUERY_PATH_INFO, Query File Basic Info, Path: \VTL01\C001\slots\2\.media
12774 2017-02-21 16:42:38.841861000 10.100.0.32 10.100.0.100 SMB 93 Trans2 Response, QUERY_PATH_INFO, Error: STATUS_OBJECT_NAME_NOT_FOUND
12775 2017-02-21 16:42:38.842107000 10.100.0.100 10.100.0.32 SMB 198 NT Create AndX Request, FID: 0x0042, Path: \VTL01\C001\drives\1\.media
12776 2017-02-21 16:42:38.845871000 10.100.0.32 10.100.0.100 SMB 193 NT Create AndX Response, FID: 0x0042
12777 2017-02-21 16:42:38.845932000 10.100.0.100 10.100.0.32 SMB 130 Trans2 Request, QUERY_FILE_INFO, FID: 0x0042, Query File Internal Info
12778 2017-02-21 16:42:38.846335000 10.100.0.32 10.100.0.100 SMB 126 Trans2 Response, FID: 0x0042, QUERY_FILE_INFO
12779 2017-02-21 16:42:38.846407000 10.100.0.100 10.100.0.32 SMB 130 Trans2 Request, QUERY_FILE_INFO, FID: 0x0042, Query File Basic Info
12783 2017-02-21 16:42:38.847521000 10.100.0.100 10.100.0.32 SMB 150 Delete Request, Path: \VTL01\C001\slots\2\.media
12784 2017-02-21 16:42:38.848313000 10.100.0.32 10.100.0.100 SMB 93 Delete Response, Error: STATUS_OBJECT_NAME_NOT_FOUND
