ST0-10X Veritas Storage Foundation 5 for Unix Practice Exam Set 3

You are assessing a volume configuration in an attempt to improve its performance. You notice that the redo logs are on VxVM RAID-5 volume with user tablespaces and data files. You want to ensure that redo logs are stored as the best practices and guidelines. What should you do?


Options are :

  • Put the redo logs on a separate RAID-5 volume from the user tablespaces and datafiles.
  • Do nothing because this is the optimal volume layout for redo logs.
  • Put the redo logs on a separate file system from the user tablespaces and datafiles created on a striped and mirrored volume. (Correct)
  • Convert the RAID-5 layout to a striped and mirrored volume.

Answer : Put the redo logs on a separate file system from the user tablespaces and datafiles created on a striped and mirrored volume.

You administer storage for an application "myapp" on server QA1, with a file system dedicated to code and configuration data for that myapp. Part of the testing discipline is to return myapp's file system to a known initial state prior to each test activity, and to run a series of tests beginning with the same initial state. The traditional approach to preparing for each test involves restoring the file system from a backup image prior to each test, which imposes an hour's delay between the end of one test run and the beginning of the next. A typical testing session lasts only two to three hours, the hour of restore delay between tests reduces the availability of the server for testing by about 30%. What kind of Storage Foundation mechanism would work best to reduce the delay required between tests?


Options are :

  • Storage checkpoints are the best fit. (Correct)
  • File system snapshots are the best fit.
  • Third-mirror breakoff snapshots are the best fit.
  • Space-optimized instant snapshots are the best fit.

Answer : Storage checkpoints are the best fit.

You have just started a relayout operation in a live test environment, and you want to limit the impact of your work on concurrent testing activities. You also want to accommodate the need to constrain a relayout jobs performance impact on concurrent activities. What would you do to perform this task?


Options are :

  • Use the "set slow" option of vxtask to throttle the VxVM task. (Correct)
  • Use the "set iodelay" option of vxtask to throttle the VxVM task
  • Use the "set nice" option of vxtask to throttle the VxVM task.
  • Use the "set iowait" option of vxtask to throttle the VxVM task.

Answer : Use the "set slow" option of vxtask to throttle the VxVM task.

You are planning a relayout for a 10GB RAID-5 volume with a RAID-5 log to a stripe-mirror configuration. Dirty-region logging is indicated by the volume's sizE. How would you plan to address the logs?


Options are :

  • Relayout will remove log plexes from the volume, but the DRL must be created after relayout is complete.
  • Use the "convertlogs" option of vxassist to cause the relayout job to convert the log plexes.
  • The RAID-5 log should be removed prior to the relayout and after the relayout completes, the DRL should be created separately (Correct)
  • Remove the RAID-5 log and create a DRL prior to the relayout operation.

Answer : The RAID-5 log should be removed prior to the relayout and after the relayout completes, the DRL should be created separately

Which two are the advantages of the Logical PITCs?


Options are :

  • The PITC is available for use instantaneously.
  • The PITC requires the same amount of storage space as the original.
  • The PITC is an actual physical copy of the data.
  • Potentially less storage space is required.
  • The PITC is dependent on the original. (Correct)

Answer : The PITC is dependent on the original.

An Oracle Enterprise database is having I/O performance issues. You need to determine the exact location of a data block on a disk that is a hot spot slowing down I/O performance. Which feature of Storage Foundation 5. 0 for Oracle will you use to perform this task?


Options are :

  • Veritas Storage Checkpoint feature
  • Veritas Database FlashSnap feature
  • Veritas Extension for Oracle Disk Manager
  • Veritas Storage Mapping feature (Correct)

Answer : Veritas Storage Mapping feature

You administer storage for multiple hosts supporting a large OLTP application. Host Mkt operates both within the secure intranet, and host Store operates in a DMZ environment. Store stages detailed transaction logs on a volume named s_detail in a disk group named s_data. You need to deliver large batches of transaction data history from host Store to host Mkt for market analysis, and to receive the results of that analysis, as part of a weekly routine. To deliver sales history to the marketing host, what sequence of actions must you carry out? Place the following actions in order. 1. Use vxdg to deport the snapshot volume's disk group from host Store. 2. Use vxdg to import the snapshot volume into host Mkt. 3. Use vxsnap to create a snapshot of s detail on s datA. 4. Use the vxsnap command to enable FastResync on s_detail. 5. Use vxdg to split the snapshot volume away from s data, into a separate disk group.


Options are :

  • 4, 5,2,1,3 (Correct)
  • 4, 2,5,3,1
  • 5, 4,1,2,3
  • 5, 2,4,1,3

Answer : 4, 5,2,1,3

Identify the sequence in which VxVM performs a relayout on a "target" volume. 1. An extent of the target volume is restructured. 2. Data stored in an extent of the target volume is moved to the scratchpad volume. 3. A temporary subdisk is allocated to stage data in the volume undergoing relayout. 4. Data stored in the scratchpad volume is moved to an extent of the target volume.


Options are :

  • 3,2,1,4 (Correct)
  • 4,3,1,2
  • 1,2,3,4
  • 2,4,1,3

Answer : 3,2,1,4

How do you change the time limit for an I/O request in Dynamic Multi-Pathing (DMP) in Veritas Volume Manager on a Solaris operating system?


Options are :

  • Modify the /kernel/drv/vxdmp.conf file by adding dmp_failed_io_threshold tunable parameter. (Correct)
  • Modify the /kernel/drv/vxdmp.conf file by adding vol maxio tunable parameter.
  • Modify the /kernel/drv/vxdmp.conf and /kernel/drv/vxio.conf files by adding dmp_failed_io_threshold tunable parameter.
  • Modify the /kernel/drv/vxio.conf file by adding dmp failed_io_threshold tunable parameter.

Answer : Modify the /kernel/drv/vxdmp.conf file by adding dmp_failed_io_threshold tunable parameter.

You work in a Server Operations Center (SOC) with other administrators monitoring VxVM background tasks after you initiate them. You need to set up a VxVM task so that these SOC administrators can track your background tasks against the change control documentation. What would you do address this requirement?


Options are :

  • Use the vxtask tag command to associate the task id with the change control number.
  • Use the vxtask label command to mark the task with the change control number (Correct)
  • Use the "-n" flag to associate the task with the change control number.
  • Use the "-t" flag to mark the task with the change control number (Correct)

Answer : Use the vxtask label command to mark the task with the change control number Use the "-t" flag to mark the task with the change control number

The VxVM operation fails while importing a disk group and you get an error message "VxVM vxdg ERROR V-5-1-2907 diskgroup: Disk group does not exist" How will you solve this problem?


Options are :

  • Export a disk group from the current host and import the disk group to another host.
  • Restore the configuration for the disk group from the backup.
  • If the disk group already exists on the exported host, import it to the current host. (Correct)
  • Export a disk group from another host.

Answer : If the disk group already exists on the exported host, import it to the current host.

You execute the vxtrace command without any option to collect I/O trace data on all virtual disk drives during peak I/O operations. When you start to analyze the data, you notice that vxtrace displays a record indicating records are lost. You want to reduce the likelihood of the kernel discarding records so that you do not have to rerun vxtrace to capture the records. What should you do?


Options are :

  • Increase the kernel buffer using the -o option
  • Increase the kernel buffer (Correct)
  • Wait until I/O operations have decreased
  • Print vxtrace event records to a file

Answer : Increase the kernel buffer

How would you define a template that is used in Intelligent Storage Provisioning (ISP)?


Options are :

  • It is a set of storage pool definitions for a data pool and its clone pools that define how storage is organized within the disk group.
  • It creates volumes from available storage with the required capabilities that you specify. (Correct)
  • It is a collection of rules that specify the performance and reliability characteristics for volumes.
  • It is a storage pool that contains snapshots of your primary data.

Answer : It creates volumes from available storage with the required capabilities that you specify.

There are four volumes that are striped across five disks. One of the disks fails. From how many volumes will you restore the data?


Options are :

  • Two volumes
  • One volume
  • Three volumes
  • Four volumes (Correct)

Answer : Four volumes

You want to shrink the volume named payvol to 20 MB and resize the VxFS file system automatically. The volume is in the disk group named hrdg. The volume must be resized on the defined disk group. What should you do?


Options are :

  • Use vxassist to shrink the file system first, and then shrink the volume.
  • Use vxassist to shrink the volume first, and then shrink the file system.
  • Use vxresize to resize the volume containing the filesystem. (Correct)
  • Use vxresize to shrink the file system first, and then shrink the volume.

Answer : Use vxresize to resize the volume containing the filesystem.

You have collected performance data from an e-commerce Oracle database using the vxstat command. You are creating a similar e-commerce Oracle database to serve as a backend for an e-commerce website. You also want to ensure optimal Online Transaction Processing (OLTP) throughput by balancing the I/O across as many disks as possible. What should you do?


Options are :

  • Create the database on a file system on a mirrored volume using all available disks
  • Create the database on a file system on a striped volume using all available disks. (Correct)
  • Create the database on 2 separate file systems on a striped volume using all available disks
  • Create the database on a file system on a RAID-5 volume using all available disks.

Answer : Create the database on a file system on a striped volume using all available disks.

You have replaced disks on a system under the VxVM control and you get an error VxVM vxconfigrestore ERROR V-5-1-6012 There are two backups that have the same disk group name with different disk group id. How will you resolve this error?


Options are :

  • Delete the backup file, in dginfo, /etc/vx/cbr/bk/diskgroup. dgid/ dgid.dginfo
  • Specify the disk group by its name rather than by its ID.
  • Rename one of the disk groups.
  • Specify the disk group by its ID rather than by its name (Correct)

Answer : Specify the disk group by its ID rather than by its name

You are not able to find a physical device corresponding to the disk ID in the disk media record when one of the subdisks associated with the plex fails. You need to check the plex state to solve the problem. What will be the status of the plex in this situation?


Options are :

  • UNENABLED
  • DISCONNECTED
  • INACTIVE
  • NODEVICE (Correct)

Answer : NODEVICE

What does the ACTIVE plex state indicate?


Options are :

  • The data in the plex is not synchronized with the data in the CLEAN plexes
  • The volume is currently started, and the volume is able to perform I/O. (Correct)
  • The plex does not participate in any I/O when plex is offline, so the contents of plex become outdated if the volume is actively written.
  • The plex state does not define which plex has the active data, and which plex does not have the active data.

Answer : The volume is currently started, and the volume is able to perform I/O.

You have gathered file I/O performance data from an Oracle Enterprise database. The database is using one filesystem on a striped volume. You want to use the performance data to adjust the system configuration to ensure efficient use of system resources. Which specific activity should you should perform to adjust the system configuration?


Options are :

  • Volume I/O activity
  • All I/O activity
  • Raw disk I/O activity
  • File I/O activity (Correct)

Answer : File I/O activity

You are working on Storage foundation for DB2. You create a file system and you want to mount the file system to enable a Quick I/O. However, you are not able to mount the file system. What could be a probable cause? (Each correct Answer presents part of the solution. Select two.)


Options are :

  • The mount point path is not an absolute path name. (Correct)
  • The Quick I/O is not licensed.
  • You are not logged in as a root user. (Correct)
  • The file system is read-only.

Answer : The mount point path is not an absolute path name. You are not logged in as a root user.

You have designed a tiered storage environment using ISP volumes, created the disk group that will be used to hold the tiered volumes, and created the storage pool in the disk group. You are now ready to install the template definition file in the ISP configuration database that you have created. What should you do next?


Options are :

  • Use the vxassist command to install your template definition file in the ISP configuration database.
  • Use the vxdisk command to install your template definition file in the ISP configuration database.
  • Use the vxvset command to install your template definition file in the ISP configuration database.
  • Use the vxtemplate command to install your template definition file in the ISP configuration database. (Correct)

Answer : Use the vxtemplate command to install your template definition file in the ISP configuration database.

You have to recommend appropriate virtual storage configurations for use by specific classes of applications, based on the details of each application's I/O requirements. Your application generates large volumes of temporary data. The RAID configuration for temporary space should aim to maximize I/O throughput. You also need to ensure that there is no unnecessary space overhead. Which RAID layout should you use?


Options are :

  • RAID-1
  • RAID-1+0
  • RAID-5
  • RAID-0 (Correct)

Answer : RAID-0

How does a volume created by VxVM appear in the operating system?


Options are :

  • As physical disks (Correct)
  • As simple disks
  • As SAN disks
  • As remotely-hosted disks

Answer : As physical disks

While you are working on Storage Foundation for DB2, you want to convert the DB2 containers by executing the qio_convertdbfiles -u command. What will be the outcome of the command?


Options are :

  • It reports the concurrent fragmentation levels for database files listed in the mkqui.dat file.
  • It reports the defragment level for the Quick I/O files
  • It converts regular files to Quick I/O files.
  • It changes the Quick I/O files back to regular files. (Correct)

Answer : It changes the Quick I/O files back to regular files.

You are working on Veritas Storage Foundation for Oracle RAC and want to create a disk group on the shared disks. You execute the command vxdctl -c mode on a node. What will be the output of this command?


Options are :

  • The command will create a disk group on the shared disk.
  • The command will display whether the node is a master or slave. (Correct)
  • The command will change the node from slave to master
  • The command will change the node from master to slave.

Answer : The command will display whether the node is a master or slave.

What is a collection of VxVM disks that share a common configuration and are used to hold the data for a specific application or set of applications?


Options are :

  • Plex
  • Volume
  • Subdisk
  • Disk Group (Correct)

Answer : Disk Group

You have installed all the features for Storage Foundation for DB2. On the VxFS file system, you execute a command /opt/VRTS/bin/qiomkfile -s 500m /db01/defile. What will be the outcome of this command?


Options are :

  • The command will create a 500 MB Quick I/O capable file. (Correct)
  • The command will terminate without providing any result.
  • The command will resize a Quick I/O file to 500 MB.
  • The command will create a concurrent I/O capable file.

Answer : The command will create a 500 MB Quick I/O capable file.

Which is a limitation of using CDS disk layout under VxVM 4. 0 or above?


Options are :

  • The CDS format cannot be used for boot disks. (Correct)
  • The CDS format cannot be used with hardware RAID controllers.
  • The CDS format cannot contain a private region and a public region on a single partition.
  • The CDS format cannot be used in conjunction with OS-level partitioning.

Answer : The CDS format cannot be used for boot disks.

You are responsible for administering a large storage environment. The environment includes DBMS systems that use VxFS-based data files, performance-critical application files, and archives of historical user data. Users and application administrators are not satisfied with policies segregating their data files into different file systems in terms of these usages, and they want you to manage these issues for them. How does DST help in this case? (Select two.)


Options are :

  • You can match file access characteristics to performance requirements and cost constraints. (Correct)
  • You can distribute the contents of a file system across multiple volumes that may have different configurations. (Correct)
  • You can increase access speed for all files
  • You can reduce storage costs for all files.
  • You can simplify the management of file system data.

Answer : You can match file access characteristics to performance requirements and cost constraints. You can distribute the contents of a file system across multiple volumes that may have different configurations.

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