dellock6 wrote:GFS retention makes dedup appliances really helpful. There are high chances many blocks in different VBK files are the same, so a dedup appliance can achieve in this situation a high deduplication ratio. With this kind of appliances, to have several full VIB files is not a huge problem.
GFS works fine, but only for weekly, monthly, quarterly and yearly. Based on the information provided, it will have tons of issues with long term daily backup archival. When you create a backup copy job, it natively creates an incremental chain (VBK + VIBs) for the daily backup copy restore points. For those that need long term retention of daily backups, this could result in a very long chain which means extremely slow restore times the longer the chain gets (not to mention that the chain is deduped and needs to be rehydrated which further impacts restore times). The ideal way to archive daily backups would be VBK files for each day. Right now, it looks like the only way to do that right now is to have a separate backup copy job and then copy it over to a deduped repository using postjob scripts, which is not ideal.