Review the storage pool information:
Which statement describes the status of this storage pool?
A.
It is a RAIDZ storage pool and can withstand a single disk failure; data will be striped at: disk
components.
B.
It is a double-parity RAIDZ storage pool and can withstand two disk failures; data will be striped
across four disk components.
C.
It is an improperly configured RAIDZ storage pool; data will be striped across four disk
components, but only three drives are protected with redundancy.
D.
It is an improperly configured RAIDZ storage pool; data will be striped across three disk
components, but only three drives are protected with redundancy.
Explanation:
Device c3t6d0 is not included in the RAIDZ storage pool. The other three devices
are included in the raidz pool. The data on these devices are protected.
Note: In addition to a mirrored storage pool configuration, ZFS provides a RAID-Z configuration
with either single, double, or triple parity fault tolerance. Single-parity RAID-Z (raidz or raidz1) is
similar to RAID-5. Double-parity RAID-Z (raidz2) is similar to RAID-6.
Reference: RAID-Z Storage Pool Configuration
D , disk c3t6d0 isn’t protected with redundancy since it isn’t part of the RAIDZ device
but the data will be striped across all four devices, except the fourth drive won’t be protected.
I think it’s C
I agree with you buckss, ZFS dynamically stripes data across all devices.
C
Correct C
root@Sol-11-2-PC02:/# zpool create pool1 raidz1 c5t12d0 c5t13d0 c5t14d0
root@Sol-11-2-PC02:/# zpool status pool1
pool: pool1
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
pool1 ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
c5t12d0 ONLINE 0 0 0
c5t13d0 ONLINE 0 0 0
c5t14d0 ONLINE 0 0 0
errors: No known data errors
root@Sol-11-2-PC02:/# zfs list pool1
NAME USED AVAIL REFER MOUNTPOINT
pool1 117K 7.83G 34.6K /pool1
root@Sol-11-2-PC02:/# zpool get all pool1
NAME PROPERTY VALUE SOURCE
pool1 allocated 235K –
pool1 altroot – default
pool1 autoexpand off default
pool1 autoreplace off default
pool1 bootfs – default
pool1 cachefile – default
pool1 capacity 0% –
pool1 dedupditto 0 default
pool1 dedupratio 1.00x –
pool1 delegation on default
pool1 failmode wait default
pool1 free 11.9G –
pool1 guid 15609323197865457342 –
pool1 health ONLINE –
pool1 listshares off default
pool1 listsnapshots off default
pool1 readonly off –
pool1 size 11.9G –
pool1 version 35 default
root@Sol-11-2-PC02:/# zpool add -f pool1 c5t15d0
root@Sol-11-2-PC02:/# zpool status pool1
pool: pool1
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
pool1 ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
c5t12d0 ONLINE 0 0 0
c5t13d0 ONLINE 0 0 0
c5t14d0 ONLINE 0 0 0
c5t15d0 ONLINE 0 0 0
errors: No known data errors
root@Sol-11-2-PC02:/# zpool get all pool1
NAME PROPERTY VALUE SOURCE
pool1 allocated 163K –
pool1 altroot – default
pool1 autoexpand off default
pool1 autoreplace off default
pool1 bootfs – default
pool1 cachefile – default
pool1 capacity 0% –
pool1 dedupditto 0 default
pool1 dedupratio 1.00x –
pool1 delegation on default
pool1 failmode wait default
pool1 free 15.9G –
pool1 guid 15609323197865457342 –
pool1 health ONLINE –
pool1 listshares off default
pool1 listsnapshots off default
pool1 readonly off –
pool1 size 15.9G –
pool1 version 35 default
root@Sol-11-2-PC02:/pool1# zfs list pool1
NAME USED AVAIL REFER MOUNTPOINT
pool1 112K 11.7G 34.6K /pool1
C
C