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Exam 1z0-821 topic 1 question 102 discussion

Actual exam question from Oracle's 1z0-821
Question #: 102
Topic #: 1
[All 1z0-821 Questions]

Your server has a ZFS storage pool that is configured as follows:


The server has two spate 140-GB disk drives: c3t5d0 c3t6d0
Which command would add redundancy to the pool1 storage pool?

  • A. zpool attach pool1 c3t5d0 c3t6d0
  • B. zpool attach pool1 c3t3d0 c3c5d0; zpoo1 attach pool1 c3t4d0 c3t6d0
  • C. zpool mirror pool1 c3t5d0 c3t6d0
  • D. zpool add pool1 mirror c3t5d0 c3t6d0
  • E. zpool add raidz pool1 c3t5d0 c3t6d0
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Suggested Answer: A 🗳️
You can convert a non-redundant storage pool into a redundant storage pool by using the zpool attach command.
Note: zpool attach [-f] pool device new_device
Attaches new_device to an existing zpool device. The existing device cannot be part of a raidz configuration. If device is not currently part of a mirrored configuration, device automatically transforms into a two-way mirror of device and new_device. If device is part of a two-way mirror, attaching new_device creates a three-way mirror, and so on. In either case, new_device begins to resilver immediately.

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dlicheri
5 months, 3 weeks ago
A is the wrong answer. The correct syntax for attaching a new disk to pool is : zpool attach <pool name> <existing disk> <new disk> Therefore correct answer is B : zpool attach pool1 c3t3d0 c3c5d0; zpoo1 attach pool1 c3t4d0 c3t6d0
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