Error getting index: Previous backup index is offline

Question

You can see the error log below, how do I get my previous backup index back online?

07/30/2020 06:15:38 
 99 
 77 
 Jobs 
 NETVAULT 
 Finished job 99, phase 1 (instance 77)

07/30/2020 06:15:38 
 99 
 77 
 Jobs 
 NETVAULT 
 Job Status: Backup Failed

07/30/2020 06:15:38 
 99 
 77 
 Jobs 
 NETVAULT 
 Job manager lost message channel unexpectedly

07/30/2020 06:15:38 
 99 
 77 
 Media 
 NETVAULT 
 Job has been assigned device 'Quest QoreStor (DefaultGroup/RDS-QORESTORCORP-ALLSERVERS) '

07/30/2020 06:15:38 
 99 
 77 
 Data Plugin 
 NETVAULT 
 Will attempt a backup suitable for Direct Access Restore

07/30/2020 06:15:38 
 99 
 77 
 Data Plugin 
 NETVAULT 
 Will attempt a 'dump' Backup

07/30/2020 06:15:37 
 99 
 77 
 Data Plugin 
 NETVAULT 
 NDMP Client 12.2.0.8 Backup

07/30/2020 06:15:37 
 99 
 77 
 Data Plugin 
 NETVAULT 
 Host 'Unknown', ID 'abc1997', OS 'DartOS', Version 'EMC File Server.T.8.0.1.112'

07/30/2020 06:15:37 
 99 
 77 
 Jobs 
 NETVAULT 
 Error getting index: Previous backup index is offline

07/30/2020 06:15:37 
 99 
 77 
 Jobs 
 NETVAULT 
 Previous backup index for set 'NDMP VNXe - Archives' is offline

07/30/2020 06:15:36 
 99 
 77 
 Jobs 
 NETVAULT 
 Error getting index: Previous backup index is offline

07/30/2020 06:15:36 
 99 
 77 
 Jobs 
 NETVAULT 
 Previous backup index for set 'NDMP VNXe - Archives' is offline

07/30/2020 06:15:35 
 99 
 77 
 Jobs 
 NETVAULT 
 Starting job 99 'NDMP - VNXe - Archives - FULL' (Phase 1 , Instance 77) for UID 2

Muthuraman.D · Answer

As we see from the backup selection is looking for a previous index, my guess is it could be Dump1, etc ( incremental ) these are the jobs which needs previous Full backup indexes to be online 
 My followup question would be whether the indexes of the Full backup or DUMP0 is it still online and not expired, if not expired you can 
 
 To load offline indexes: 1 In the Navigation pane, click Create Restore Job, and then on the Choose Saveset page, click Manage Indexes. 2 Click Choose Client, and select the client for which the backup was created. -or quickly locate the client (s), you can use the Search box at the upper right corner of the table. The data in the table is filtered as you type the search text into the box. 3 Click OK to close the dialog box. 4 Optionally, click Choose Plugin, and select the plug-in that was used to create the backup. Click OK to close the dialog box. 5 Click the View icon to list the savesets for the selected client and plug-in. 6 In the savesets list, all items are selected by default. To load indexes for specific savesets, clear the checkmarks for the savesets that you want to exclude. Alternatively, click the checkbox in the header row to remove all checkmarks, and select the individual savesets. 7 Click Load, and in the Load Index dialog box, configure the following option: Days to Keep Index: Type or select the number of days you want to store the index in the NetVault Database. By default, the index is retained for one day. 8 Click OK to close the dialog box 
 Refer https://support.quest.com/technical-documents/netvault/13.0/administration-guide/45#TOPIC-1432700