1Z0-820 · Question #67
The current ZFS configuration on server is: You need to backup the /data file system while the file system is active. Select the option that creates a full backup of the /data file system and stores…
The correct answer is C. Zfs send pool1/data@Monday | ssh system zfs recv backup/monday. zfs send pool1/data@Monday streams the snapshot data to stdout, and piping it through SSH to zfs recv backup/monday on the remote system writes that stream into the backup pool - this is exactly the ZFS native backup workflow for live, active filesystems. Why the distractors…
Question
The current ZFS configuration on server is:
You need to backup the /data file system while the file system is active. Select the option that creates a full backup of the /data file system and stores the backup on server in the pool named backup.
Exhibit
Options
- AMount -F nfs system: /backup / mnt
- BMount -F nfs systemB: /backup/mnt
- CZfs send pool1/data@Monday | ssh system zfs recv backup/monday
- DZfs snapshot pool1/data@Monday | ssh system zfs recv backup/monday
How the community answered
(27 responses)- A7% (2)
- B15% (4)
- C74% (20)
- D4% (1)
Explanation
zfs send pool1/data@Monday streams the snapshot data to stdout, and piping it through SSH to zfs recv backup/monday on the remote system writes that stream into the backup pool - this is exactly the ZFS native backup workflow for live, active filesystems.
Why the distractors fail:
- A & B use
mount -F nfs, which mounts a remote NFS share as a local directory - that grants access to storage, not a backup of/data. Neither creates a copy of the data. - D uses
zfs snapshot, which only creates a local point-in-time snapshot and produces no stdout stream. You cannot pipezfs snapshotoutput intozfs recv- there is nothing to receive.
Memory tip: Think "SEND streams, SNAPSHOT stays." zfs snapshot freezes data locally; zfs send is what actually moves that data across the wire. For remote backups, the pattern is always zfs send ... | ssh <host> zfs recv ....
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