Cejka Rudolf wrote (2017/06/01): > It is too low for LTO-5. It is at the lower limit before tape > shoe shining, problably with some tape stops already here. > The real limit is 47 MB/s for HP and 40 MB/s for IBM, but no > guarantee it is correct.
Small clarification about this: Speeds 47 MB/s or 40 MB/s are physical writing speeds after compression, so uncompressed datas from server to tape drive have to be faster. And because of variable compression ratio over time, typically between 1:1 and 2:1, then you are safe just with much bigger writing speeds. >From the other side, if you have writing speed under 100 MB/s, it is sometimes recommended to switch off compression, so that even speeds between 50-100 MB/s are safe. -- 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
