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質問 1：
You have set Extended Round Robin on a server with intensive sequential I/O profile. Which two benefits
result from implementing this algorithm? (Choose two.)
A. tracks preloaded to cache
B. no tracks preloading on the system
C. efficient cache usage on the storage system
D. blocks held permanent in Read Cache
正解：A,C
質問 2：
A storage administrator would like to connect 10 hosts into the same FC ports of a Hitachi Unified Storage
system. They are concerned that one host with high I/Os will impact the other hosts on the same FC ports.
Which HBA parameter should be set to limit the number of outstanding I/Os on each host?
A. command depth
B. queue depth
C. queue length
D. command length
正解：B
質問 3：
You are implementing a Hitachi Unified Storage File Module cluster with a single SMU. How do you run
the smu-config script?
A. Connect an Ethernet cable and login as supervisor.
B. Connect a serial null-modem cable and login as supervisor.
C. Connect a serial null-modem cable and login as root.
D. Connect an Ethernet cable and login as root.
正解：C
質問 4：
You have just allocated 10 LUNs on a Hitachi Unified Storage system to a HP-UX 11.i host. You now
need to verify that the host can see the new storage. Which utility should you run on the HPUX host?
A. diskpart
B. cfgmgr
C. devfsadm
D. ioscan
正解：D
質問 5：
On a Hitachi Unified Storage system, which statement regarding Master Cache Partitions is correct?
A. They do not exist until the Cache Partition ManagerLicensekey is installed.
B. They always exist whether or not the Cache Partition ManagerLicensekey is installed.
C. There is always a Master Cache Partition 0 in controller 0 and in controller 1.
D. They always exist if there is 2GB or more of cache memory installed per controller.
正解：B
質問 6：
What are the two bitmap locations used by the Memory Management Layer during LU format in Hitachi
Unified Storage systems? (Choose two.)
A. swapped in and out of cache as needed
B. in Cache Memory Adapter Master Partition 0
C. SSD on the Cache Memory Adapter
D. in the RAID group upon creation
正解：A,D
質問 7：
What is Hitachi Data System's recommended practice for zoning?
A. single operation system zoning (all HBAs from one OS in a zone)
B. port-based zoning
C. single HBA zoning (one HBA per zone)
D. zoning is optional
正解：C
質問 8：
You have just allocated four 3TB LUNs from a Hitachi Unified Storage System to a set of ESX 4.x servers.
The VMware administrator can see volumes that are assigned to the servers from an older storage array,
but not the volumes you have just allocated. What is the most likely cause?
A. The FC switch ports need to be disabled/enabled to force the HBAs to re-login to the fabric.
B. ESX 4.x servers cannot recognize volumes that are 2TB or larger.
C. The rescan function in VMware is not working, so both servers need to be rebooted.
D. This a newer storage array with an older version of ESX so the HBA drivers need to be updated.
正解：B
You have set Extended Round Robin on a server with intensive sequential I/O profile. Which two benefits
result from implementing this algorithm? (Choose two.)
A. tracks preloaded to cache
B. no tracks preloading on the system
C. efficient cache usage on the storage system
D. blocks held permanent in Read Cache
正解：A,C
質問 2：
A storage administrator would like to connect 10 hosts into the same FC ports of a Hitachi Unified Storage
system. They are concerned that one host with high I/Os will impact the other hosts on the same FC ports.
Which HBA parameter should be set to limit the number of outstanding I/Os on each host?
A. command depth
B. queue depth
C. queue length
D. command length
正解：B
質問 3：
You are implementing a Hitachi Unified Storage File Module cluster with a single SMU. How do you run
the smu-config script?
A. Connect an Ethernet cable and login as supervisor.
B. Connect a serial null-modem cable and login as supervisor.
C. Connect a serial null-modem cable and login as root.
D. Connect an Ethernet cable and login as root.
正解：C
質問 4：
You have just allocated 10 LUNs on a Hitachi Unified Storage system to a HP-UX 11.i host. You now
need to verify that the host can see the new storage. Which utility should you run on the HPUX host?
A. diskpart
B. cfgmgr
C. devfsadm
D. ioscan
正解：D
質問 5：
On a Hitachi Unified Storage system, which statement regarding Master Cache Partitions is correct?
A. They do not exist until the Cache Partition ManagerLicensekey is installed.
B. They always exist whether or not the Cache Partition ManagerLicensekey is installed.
C. There is always a Master Cache Partition 0 in controller 0 and in controller 1.
D. They always exist if there is 2GB or more of cache memory installed per controller.
正解：B
質問 6：
What are the two bitmap locations used by the Memory Management Layer during LU format in Hitachi
Unified Storage systems? (Choose two.)
A. swapped in and out of cache as needed
B. in Cache Memory Adapter Master Partition 0
C. SSD on the Cache Memory Adapter
D. in the RAID group upon creation
正解：A,D
質問 7：
What is Hitachi Data System's recommended practice for zoning?
A. single operation system zoning (all HBAs from one OS in a zone)
B. port-based zoning
C. single HBA zoning (one HBA per zone)
D. zoning is optional
正解：C
質問 8：
You have just allocated four 3TB LUNs from a Hitachi Unified Storage System to a set of ESX 4.x servers.
The VMware administrator can see volumes that are assigned to the servers from an older storage array,
but not the volumes you have just allocated. What is the most likely cause?
A. The FC switch ports need to be disabled/enabled to force the HBAs to re-login to the fabric.
B. ESX 4.x servers cannot recognize volumes that are 2TB or larger.
C. The rescan function in VMware is not working, so both servers need to be rebooted.
D. This a newer storage array with an older version of ESX so the HBA drivers need to be updated.
正解：B
Anza -
勉強しやすくなっていました。一からの学習にも試験直前の学習にも使えるHAT-420問題集だと思う。