Hi Jon, The encryption key is set by drive/tape so of course it is not just copy that block from here to here, it has to be deciphered uncompressed and then goes the inverse. >From my maths (if correct) it look like you have 142MB/s read/write which is ~50% of native speed. Maybe the hba is somewhat limited and can handle more than the native 300MB/s one way?
On Thursday, 10 April 2025 at 15:16:50 UTC+2 Jon Schewe wrote: > I have 2 LTO-8 drives and I'm executing a copy job from one to the other. > I'm using hardware encryption and compression. I have spooling turned off > because it's tape to tape, so I woudl expect one could just read from one > tape and write to the other. The source tape has 16TB of raw data. I would > expect a tape to tape copy to be reasonably fast, however I'm finding that > after 24 hours I've only seen 12TB copied between the 2 tapes. > Is this just how slow the tapes are? Or is there something I can > reconfigure in bareos to speed this up? > -- 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/9f6eb1c5-6497-4200-8461-448f2a501024n%40googlegroups.com.
