We have implemented a new backup system for a client of ours. They insisted to have a LTO-06 tape backup as part of their strategy as they are used to handling tapes. Problem is, that tape backup jobs take literally ages and the customer cannot swap tapes as they (and we'd) like to.
- dedicated VBR Enterprise host (physical, Windows 10 Pro, i5-7400, 16 GB RAM) with default Veeam Backup Proxy, internal LTO-06 SAS drive
- dedicated Synology RS815RP+ NAS, 4 x Seagate 2.7 TB HDD for VBR repository (CIFS)
- Hyper-V Backup with 5 VMs, inremental, "configure secondary destination for this job" is checked and backup to tape jobs are set as secondary target, advanced settings are set to recommended settings
- 4 x Veeam Agent for Windows 2.0 on Windows Server hosts, set to use the VBR host as backup server and its Veeam backup repository on NAS, rest set to default
The primary backup jobs run rather fine.
Problem is when the backup to tape jobs starts. E.g. for one of the agent backups it currently stands at 97% after 12:30 hours with 620 GB processed at 14 MB/s. Looking at the NAS while this part of the tape backup runs, it shows that the volume is at 100% load which, I guess, has to do with lots of movement from the disks' heads (fragmentation?).
What can we configure differently to speed up the tape job?
Our client wants to have a current copy of all full backups on each tape. Ideally - as they are used to this - they would like to have one complete tape backup every day (Mon - Sat). But they'd also be okay with swapping tapes every Mondays at 10 a.m. - if only we coukd make sure it's done by that time and noone had to wait hours for the job to finish, etc.
If possible we'd like to keep the daily full tape backup, but of course it has to be on time every day. They drive to office on Saturdays just to swap tapes. Sitting around waiting hours for a job to complete is no option there