I am trying to backup a large zfs file system to two different identical hard drives. I have therefore started two commands to backup "myfs" and when they have finished, I will backup "nextfs"
zfs send mypool/m...@now | zfs receive backupzpool1/now & zfs send mypool/m...@now | zfs receive backupzpool2/now ; zfs send mypool/nex...@now | zfs receive backupzpool3/now in parallell. The logic is that the same file data is cached and therefore easy to send to each backup drive. Should I instead have done one "zfs send..." and waited for it to complete, and then started the next? It seems that "zfs send..." takes quite some time? 300GB takes 10 hours, this far. And I have in total 3TB to backup. This means it will take 100 hours. Is this normal? If I had 30TB to back up, it would take 1000 hours, which is more than a month. Can I speed this up? Is rsync faster? As I have understood it, "zfs send.." gives me an exact replica, whereas rsync doesnt necessary do that, maybe the ACL are not replicated, etc. Is this correct about rsync vs "zfs send"? -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
