Hi
Found these two links about the possibilities to calculate the size of backups.
https://forum.proxmox.com/threads/real-size-of-diskspace-used-in-backups.102664/
https://forum.proxmox.com/threads/how-to-get-the-exactly-backup-size-in-proxmox-backup.93901/
Our challenge is to not use more than two tapes on a full backup due to limitations of the export slots and onsite staff.
We see that roughly 16 TB are fitting on one LTO-9. But it seems to change due to? Backups not getting split at an end of a tape? Anything else?
Oct, 25th tape 0 = 15.96 TB, tape 1 = 15.97 TB
Nov, 1st, tape 0 = 16.39 TB, tape 1= 13.68 TB
Nov, 8th, tape 0 = 16.39 TB, tape 1 =13.87 TB
Nov, 15th tape 0 = 16.39 TB, tape 1 = 14.71 TB
Nov, 22th tape 0 = 16.39 TB, tape 1 = 15.65 TB
Nov, 29th tape 0 = 15.08 TB, tape 1 = 15.26 TB, tape 2 = 1.66 TB
We could use exclude filters to avoid some of the larger and not that essential vms, but we would be glad to predict the size somehow.
Any hint?
Regards, Urs
Found these two links about the possibilities to calculate the size of backups.
https://forum.proxmox.com/threads/real-size-of-diskspace-used-in-backups.102664/
https://forum.proxmox.com/threads/how-to-get-the-exactly-backup-size-in-proxmox-backup.93901/
Our challenge is to not use more than two tapes on a full backup due to limitations of the export slots and onsite staff.
We see that roughly 16 TB are fitting on one LTO-9. But it seems to change due to? Backups not getting split at an end of a tape? Anything else?
Oct, 25th tape 0 = 15.96 TB, tape 1 = 15.97 TB
Nov, 1st, tape 0 = 16.39 TB, tape 1= 13.68 TB
Nov, 8th, tape 0 = 16.39 TB, tape 1 =13.87 TB
Nov, 15th tape 0 = 16.39 TB, tape 1 = 14.71 TB
Nov, 22th tape 0 = 16.39 TB, tape 1 = 15.65 TB
Nov, 29th tape 0 = 15.08 TB, tape 1 = 15.26 TB, tape 2 = 1.66 TB
We could use exclude filters to avoid some of the larger and not that essential vms, but we would be glad to predict the size somehow.
Any hint?
Regards, Urs