Hitachi Hitachi Data Systems HAT-680 Questions & Answers

• Question 31:

  Which two statements regarding the Hitachi Dynamic Link Manager Least I/O and Least Block algorithms are true? (Choose two.)

  A. The Least I/O and Least Block algorithms redirect the I/Os to a single path determined by the algorithms.

  B. The Least I/O and Least Block algorithms redirect the I/Os to a pair of paths determined by the algorithms.

  C. The Extended Least I/O and Extended Least Block algorithms distribute sequential I/Os to a set of paths and random I/Os to another set of paths.

  D. The Extended Least I/O and Extended Least Block algorithms distribute I/Os to paths depending on whether the I/O involves sequential or random access.

  Correct Answer: AD

• Question 32:

  In which file format is Hitachi Device Manager data exported?

  A. .pdf

  B. .csv

  C. .doc

  D. .html

  Correct Answer: B

• Question 33:

  A storage manager needs to add a new server to the Hitachi Device Manager (HDvM) database. As an alternative to running a host scan, which two actions are available to discover and identify the new server? (Choose two.)

  A. Use the Host Data Collector.

  B. Install HDvM Agent on the host.

  C. Execute the AddNewHost CLI command.

  D. Run the Import Hosts utility.

  Correct Answer: AB

• Question 34:

  A Hitachi Dynamic Provisioning pool has exceeded a threshold and the administrator wants to reduce the pool usage below the threshold setting. How would this be achieved?

  A. Expand pool volumes.

  B. Set Host Mode option 40.

  C. Use Zero Page Reclaim.

  D. Shrink some DP Vols.

  Correct Answer: C

• Question 35:

  Which three GUI options in the Hitachi Command Suite would be used to optimize data placement within an HDT implementation? (Choose three.)

  A. Edit Dedupe Policy

  B. Edit Tiering Policy

  C. Migrate Data

  D. Archive Data

  E. Expand DP Volume

  Correct Answer: BCE

• Question 36:

  A user reports that a host running Hitachi Dynamic Link Manager (HDLM) has lost a number of paths to the LUNs it is using. The host still has access to all the LUNs. When troubleshooting, what should you do?

  A. Set all paths offline and then online again.

  B. Check the output of the "dlnkmgr view" command in HDLM.

  C. Reboot the host.

  D. Execute the "dlnkmgr online" command in HDLM.

  Correct Answer: B

• Question 37:

  A customer has identified a performance bottleneck with Online Transaction Processing (OLTP) production host LUNs. The performance improvement plan includes a change to the Hitachi Dynamic Link Manager load balancing algorithm which is currently set to Round Robin. Which setting should the customer use?

  A. Least I/O

  B. Least block

  C. Extended Round Robin

  D. Extended Least block

  Correct Answer: A

• Question 38:

  You want to backup the HiRDB database of your newly installed Hitachi Command Suite (HCS) server. Which two methods are available to you? (Choose two.)

  A. Use the hcmdsbackups command specifying a directory for the backup data.

  B. Open the Utility tab in the HCS GUI and select the Backup Database function.

  C. Run the HiRDB backup wizard and select the backup format and destination.

  D. Use hcmdsdbtrans /export command to export the database in CSV format.

  Correct Answer: AD

• Question 39:

  You are using the Allocate Storage wizard in Hitachi Device Manager and you want to identify the storage. Which two specification options are available? (Choose two.)

  A. volume type

  B. volume label

  C. volume free space

  D. volume location

  Correct Answer: AD

• Question 40:

  A customer would like to deploy Hitachi Global Link Manager (HGLM) to monitor for path errors on their SAN hosts running Hitachi Dynamic Link Manager (HDLM). Which method is used by the host to alert the HGLM server?

  A. SNMP

  B. SMTP

  C. SMS

  D. SIM

  Correct Answer: A