Ivan Adzhubey wrote (2017/06/01): > b) What is the effect of MaximumFileSize option and what would be its optimal > value for my IBM LTO-5 SAS drives? I have used 8GB value found in one of the > list posts, while the documentation suggests 2GB for LTO-4. But even set at > 8GB this would create lots of EOF marks on a 1.5TB tape, do we really need so > many?
Hi, I do use 16 GB. Every EOF mark means around 3 seconds delay. So if you have over 200 files on the tape using 8 GB, it is around 10 minutes extra per tape. > c) Should I try increasing the tape block size? Set it to fixed? I know this I think that there is no reason to use fixed tape block size. On the other side, increasing tape block size would help, there are many discussions about that. > topic has been rather controversial, so any recent experience from similar > drives/system would be appreciated. I plan to use spooling to a dedicated > RAID > volume, so hopefully hard drives should not be a bottleneck. Hard drives are potential bottleneck, they can not handle several write streams and at the same time one read stream going 150-300 MB/s. Rather use SSD drives. Regards. -- Rudolf Cejka <cejkar at fit.vutbr.cz> http://www.fit.vutbr.cz/~cejkar Brno University of Technology, Faculty of Information Technology Bozetechova 2, 612 66 Brno, Czech Republic ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
