Zitat von Rene Arnhold <[email protected]>:
sorry did not see this mail until now And sorry about the missleading LTO5 in my first toppic. We use LTO6 on the bareos Server. i have configured the max blocksize in the device section of my tape drives. At the moment i have switched back to the default values and moved all written tapes to a new pool with the 1M blocksize. HPs documentation about the LTO6 drives says, that you should not go after 256 KB blocksize (https://docs.oracle.com/cd/E38452_01/en/LTO6_Vol5_E1/LTO6_Vol5_E1.pdf). Saddly my Drives are IBM and I can not find writings from IBM about this. Maybe there is something going on at the hardware on some drives and a btape fill will rise errors (sometimes) where btape test does not.
Hello,from what i read the 256K limit is only valid on HP-UX because of limitations of the st driver on that platform. Do you really use HP-UX? Otherwise other block sizes should be fine up to the maximum the tape and the driver supports. We use 1M with LTO 4 since around 3 years without any trouble.
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