1Z0-580 · Question #31
Which term describes a read-only copy of a file system or volume, which can be created quickly easily, and initially consumes no additional Space within the pool?
The correct answer is C. snapshot. A snapshot is a read-only point-in-time copy of a file system. The copy-on-write design of ZFS makes them essentially "free" - They are space efficient and instantaneous, providing an invaluable part of backup strategies and synchronizing data between systems. Not A: A ZFS vdev…
Question
Which term describes a read-only copy of a file system or volume, which can be created quickly easily, and initially consumes no additional Space within the pool?
Options
- Avdev
- Bdataset
- Csnapshot
- Dclone
- Epool
How the community answered
(14 responses)- A7% (1)
- B7% (1)
- C71% (10)
- D14% (2)
Explanation
A snapshot is a read-only point-in-time copy of a file system. The copy-on-write design of ZFS makes them essentially "free" - They are space efficient and instantaneous, providing an invaluable part of backup strategies and synchronizing data between systems. Not A: A ZFS vdev (aka "virtual device") is either: a single disk, or two or more disks that are mirrored, or a group of disks that are organized using RAID-Z. There are also special kinds of vdevs like hot-spares, ZIL or cache devices, etc. Clones are writeable snapshots, ideal for storing many private copies of shared data for operations such as data migration, test and development, or backup.
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