Hi Bruno, I actually missed this setting, and tried setting it up with 200G, as we use LTO-9, and this already increased the speed a lot. so i will keep experimenting like this, to bring the best performance possible. Thank you very much!
Bruno Friedmann (bruno-at-bareos) schrieb am Mittwoch, 21. Januar 2026 um 14:36:28 UTC+1: > Did you ever check and adjust the Maximum File Size parameter > > https://docs.bareos.org/Configuration/StorageDaemon.html#config-Sd_Device_MaximumFileSize > > it should be at least bigger than the buffer of your drive > MaximumFileSize = 100GB > > There's also an ongoing discussion about performance and how to measure it > correctly > https://github.com/bareos/bareos/discussions/2497 > > On Wednesday, 21 January 2026 at 13:03:49 UTC+1 Patrick Winter wrote: > >> Hello, >> >> I have a LTO - Tape system with 3 drives. >> the tapes are able to write with 280mb/s, which i can verify. >> i tested this with a dataset of 500gb of small files, and another test >> with 1 single 200gb file. (from the same, and a different server, to be >> sure the network connection doesnt bottle neck.) >> >> Also with rsync i get the same speed (around 250-280mb/s) >> >> both filesets (the 500gb of small files, and the single 200gb file) are >> backuped with bareos, with only 100-120 mb/s >> >> I already tried to set maximum_block_size to 1M, as i found some hints >> that this could help. >> >> my current device configuration looks like this: >> >> Device { >> Name = Drive-0 >> DriveIndex = 0 >> MediaType = LTO >> ArchiveDevice = /dev/nst1 >> AutomaticMount = yes >> RemovableMedia = yes >> RandomAccess = no >> Autochanger = yes >> Maximum Changer Wait = 600 >> Maximum Open Wait = 600 >> Maximum Block Size = 1048576 >> } >> >> bareos-dir --version >> 25.0.2~pre13.add249aa9 >> >> >> >> Any tips or recommendations are very welcomed. >> >> best regards >> Patrick >> >> -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/bareos-users/2f2223fc-131d-4219-8fca-87348654f689n%40googlegroups.com.
