StephanF wrote:backup mode is Incremental with an active full once a week
StephanF wrote:daily one full backup to tape of the last backed up state of all VMs (minimum retention: some days, maybe 3-5)
Shestakov wrote:It`s not necessary to do active fulls that often. Once a month is more than enough.
Shestakov wrote:Backup copy GFS retention should, but I`d suggest to schedule monthly jobs on "First Sunday of month" to save more space on the repository.
Shestakov wrote:For now there is no native GFS support on tapes(working on it), but there is good workaround:
Shestakov wrote:Do you need a full backup every day and to keep 3-5 most recent full backups? If yes, you can either switch backup jobs to reverse incremental mode and make tape job run daily or work with Virtual Full Backup.
StephanF wrote:I know about this fact. I think doing active full backups "just give a good feeling" instead of beeing really necessary. I will look to do them less frequent and maybe switch to incremental forever after setting up some SureBackup jobs.
StephanF wrote:Can you give me the point why "First Sunday of month" saves more space on the repository than "First day of month"? Is it because the first sunday matches one weekly GFS restore point and so only one point is created? This makes sense.
I will think about this though I am not scared about space requirements thanks to large disks and deduplication.
StephanF wrote:I don't think incrementals on tape (especially long chains) are a good thing to do because of the risk of one tape failing.
Shestakov wrote:In fact, there is nothing to be afraid of about increments on tapes.
Shestakov wrote:I would suggest 2 plans and you can choose one you like more.
1. Not to be afraid of increments on tapes and leave backup jobs as they are, create GFS-tape jobs as was described + backup-to-tape job running daily with full on Sunday, retention(protection period) = 7.
2. If you need those full backups on tapes, switch backup jobs to reverse incremental method and create a backup to tape job with desired retention(protection period). Also create GFS-tape jobs as was described.
By the way, this scenario is why I suggested to allow Virtual full to tape also for incremental jobs with active fulls in this thread.
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