Hi A question about ufsdump to LTO tape
When I ufsdump my data to /dev/rmt/0cn it compresses the data, however, when the ufsdump is complete, it gives me the following statistic DUMP: 26508634 blocks (12943.67MB) on 1 volume at 9524 KB/sec DUMP: DUMP IS DONE DUMP: Level 0 dump on 13 September 2008 07:50:26 BST The data size specified above is the 'uncompressed' size of the data, not the size of the data on the tape (compressed) I am trying to work out how many boxes I can get on to a single tape but I cant pre-determine this as the only info i get from ufsdump is for non-compressed data, as such the only time i know ive gone over is when one of the boxes fails to backup (because the tape is full up) Unfortunately, we have many different types of data on our network (binaries, large databases etc) that all have different compression levels so estimating an average compression rate is almost impossible Is there any way of determining the "post compression" size of the data on the tape ? thus enabling me to determine how much (what percentage) of my LTO tape I am actually using I realise that I could compress the data before it goes to the tape but the overhead in CPU and time will reduce my backup window too much and therefore is not an option Any help on this would be greatly appreciated -- This message posted from opensolaris.org _______________________________________________ sysadmin-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/sysadmin-discuss
