Online Access Free HC-621 Exam Questions

Reliability of 80% of the two components consisting of a serial system, the reliability of the system is the number?

• A.60%
• B.64%
• C.80%
• D.96%

Is correct virtual snapshot of the storage array is?

• A.Snapshot support across the array
• B.Creating a snapshot after the entry into force
• C.LUN snapshot is a virtual LUN
• D.Snapshotscannotbe rolled back after the first use

About RAID5 stripe depth changes under random write performance of law is correct to say the following.

• A.With the increase of the first division will not increase the depth,random write IOPS, after reaching a certain level, random write IOPS will continue to increment
• B.Will continue to increase along with the increase of the depth of the first division,random write IOPS, after reaching a certain level, will reach a stable random write IOPS
• C.Will continue to increase along with the increase of the depth of the first division,random write IOPS, after reaching a certain level, random write IOPS will keep decreasing
• D.Will continue to increase along with the increase of the depth of the first division,random write IOPS, after reaching a certain level, random write IOPS will still continue to increment

Storage systems and network troubleshooting the following principles, the first diagnostic network, then the network element; first analyze high-level alarm, low level alarm after analysis, the following scenarios describe the error is?

• A.When resource anomalies or failures(block device / file / library)localization issues generally follow the order from the host to the storage
• B.Business interruption storage systems failure and data loss,no matter what the scene,you must first restore the data,and then resume operations
• C.FC SAN and IP SAN system abnormalities should first check the middle and link exchange is normal, then check the server and storage node
• D.For storing important to first analyze the general impact of business failures and data, such as RAID, LUN, file resource failure, link failure,controller failure,etc.

SAN working conditions can seriously affect the reliability of the SAN, as the most vulnerable parts of SAN system, the hard disk at a high temperature, high humidity, dust and static conditions is more likely to fail, the frequent failure will directly affect the hard disk system reliability sex.

• A.True
• B.False