As we do it:
1 - Backup to SOBR (disk backups)
2 - Tape job configure as secondary target. Tape job is scheduled as "as new backup files appear" and in the tape job configuration/Media Pool/Schedule button you select the days when you want your virtual full backup.
But there is an issue (at least in the version we are using now) or probably I am not doing it right. Virtual fulls on tape only appear if there are NOT periodic fulls on the disk jobs. Virtual fulls on tape only appear if we are using a forever forward incremental without full backups (a chain with only one full and all the incrementals you desire, but only one full). So unless I am doing something wrong, which is possble, or there is a fix in newer versions, If you want to configure virtual fulls on tape you will probably have to stop doing the disk synthetic fulls on wednesdays.
Things to be aware:
- Media set creation days (it seems it is fixed, but I do not know, but if a tape exists with data and a media set, and a new media set number is created (in the same tape, i.e. is "rewritten"), old copies prior to the rewritting can be "not accesible".
- Backup to tape "as new backups appear" only works if backup date is "today". If disk copy finishes at 23:59 and tape copy starts at 00:01, Tape job will not find any copy, because dates do not match. 00:00 makes a clear sheet in backup detection. If you have "missing backups", this may be the reason (We had to configure our copies to start at 00:05, and lose the precious hours between "office close" and midnight)... Take into account that "full Wednesday backup" starts on 00:05 on thursday.
There is a bit of trial and error.
Hope it helps.
(And sorry if I am wrong)
Jordi Calvet
1 - Backup to SOBR (disk backups)
2 - Tape job configure as secondary target. Tape job is scheduled as "as new backup files appear" and in the tape job configuration/Media Pool/Schedule button you select the days when you want your virtual full backup.
But there is an issue (at least in the version we are using now) or probably I am not doing it right. Virtual fulls on tape only appear if there are NOT periodic fulls on the disk jobs. Virtual fulls on tape only appear if we are using a forever forward incremental without full backups (a chain with only one full and all the incrementals you desire, but only one full). So unless I am doing something wrong, which is possble, or there is a fix in newer versions, If you want to configure virtual fulls on tape you will probably have to stop doing the disk synthetic fulls on wednesdays.
Things to be aware:
- Media set creation days (it seems it is fixed, but I do not know, but if a tape exists with data and a media set, and a new media set number is created (in the same tape, i.e. is "rewritten"), old copies prior to the rewritting can be "not accesible".
- Backup to tape "as new backups appear" only works if backup date is "today". If disk copy finishes at 23:59 and tape copy starts at 00:01, Tape job will not find any copy, because dates do not match. 00:00 makes a clear sheet in backup detection. If you have "missing backups", this may be the reason (We had to configure our copies to start at 00:05, and lose the precious hours between "office close" and midnight)... Take into account that "full Wednesday backup" starts on 00:05 on thursday.
There is a bit of trial and error.
Hope it helps.
(And sorry if I am wrong)
Jordi Calvet
Statistics: Posted by jcalvetm — May 12, 2025 12:03 pm
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