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Exam Name: Oracle Solaris 11 System Administrator
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Exam Name: Oracle Database 11g: Administrator I
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NO.1 You created a new zpool. Now you need to migrate the existing ZFS file system from
pool1/prod to pool2/prod.
You have these requirements:
1.Users must have access to the data during the migration,so you cannot shutdown the file system
while the migration takes place.
2.Because you want to copy the data as quickly as possible,you need to increase the server resources
devoted to the ZFS migration.
Which method would you use to modify the ZFS shadow migration daemon defaults to increase the
concurrency and overall speed of migration?
A. Specify the -b <blocksize> option with the zfs create command and increase the value of
<blocksize>
B. Svccfg -s filesystem/zfs: defaultsetprop config_params/shadow_threads = integer: 16endsvcadm
refresh filesystem/zfs:default
C. Svccfg - s filesystem/shadowd:defaultsetprop config_params/shadow_threads=integer:
16endsvcadm refresh filesystem/shadowd: default
D. Use the -o -volblocksize=<blocksize>option with the zfs create command and increase the value of
the default <blocksize>.
Answer: C
Explanation:
shadowd is a daemon that provides background worker threads to migrate data for a shadow
migration. A shadow migration gradually moves data from a source file system into a new "shadow"
file system. Users can access and change their data within the shadow file system while migration is
occurring.
The shadowd service is managed by the service management facility,smf(5). Administrative actions
on this service,such as enabling,disabling,or requesting restart,can be performed using svcadm(1M).
The service's status can be queried using the svcs(1) command.
The svccfg(1M) command can be used to manage the following parameter related to shadowd:
config_params/shadow_threads
Note: Oracle Solaris 11: In this release,you can migrate data from an old file system to a new file
system while simultaneously allowing access and modification of the new file system during the
migration process.
Setting the shadow property on a new ZFS file system triggers the migration of the older data. The
shadow property can be set to migrate data from the local system or a remote system with either of
the following values:
file:///path nfs://host:path
NO.2 Your server has a ZFS storage pool that is configured as follows:
The following partition scheme is used for every disk drive in pool1:
Which two are true regarding the ZFS storage pool?
A. The storage pool is 146 GB total size (rounded to the nearest GB).
B. The data on c3t3d0 is duplicated on c3t4do.
C. The storage pool is 292 GB total size (rounded to the nearest GB).
D. The storage pool is 584 G8 total size (rounded to the nearest GB).
E. The data is striped across disks c3t3d0 and c3t4do and mirrored across vdevs mirror-0 and mirror-
1.
Answer: B,C
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