A customer has purchased a 4-node N8500 clustered NAS storage system. The enterprise-edition engine nodes have two CPUs, 10GE network ports, and 48 GB cache. The performance of an engine node reaches 700 MB/s. The back-end storage uses the S5600T, which is configured with 80 SAS disks divided into eight 9-disk RAID 5 groups. Each RAID group has one hot spare disk. The performance of each SAS disk in the 9-disk RAID 5 groups is 30 MB/s. According to the preceding information, what is the overall performance of the N8500 without considering other factors?
A. 700 MB/s
B. 2800 MB/s
C. 1920 MB/s
D. 2400 MB/s
If the service disk in slot 35 on a C node of the OceanStor 9000 is faulty, you are supposed to find this disk at the front panel of the C node and then replace it.
A. True
B. False
Compared with a relational database, which of the following are advantages of NoSQL? (Select three)
A. Flexible scalability
B. High availability
C. High cost-effectiveness
D. Feature richness
An OceanStor 9000 storage system uses GE for the front-end network and 10GE for the back- end network. Which of the following statements is incorrect about the ports on the P node as shown in the figure?
A. Ports AO-1 and AO-1 are connected to the 10GE switch. A back-end network IP address must be planned for each of the two ports.
B. Ports B3-0 and B3-1 are connected to the front-end service switch. A front-end network IP address must be planned for each of the two ports.
C. NIC 0 is connected to the management and maintenance switch. You do not need to assign an IP address for this port.
D. Port IPMI is connected to the management and maintenance switch. You do not need to assign an IP address for this port.
In performance optimization of the N8500 clustered NAS storage systems, the top command is runand the following output is displayed: top - 01: 06: 48 up 1: 22, 1 user, load average: 0.06, 0.60, 0.48 Tasks: 29 total, 1 running, 28 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3% us, 1.0% sy, 0.0% ni, 98.7% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 191272k total, 173656k used, 17616k free, 22052k buffers Swap: 192772k total, 0k used, 192772k free, 123988k cached
Which of the following statements is incorrect?
A. up 1:22 indicates the current system time.
B. load average indicates the average length of task queues.
C. 0.3% us in Cpu(s) indicates the CPU occupation percentage of user space.
D. 17616k free in Mem indicates the total capacity of free memory.
When using the OceanStor Toolkit to deploy an OceanStor 9000 storage system, the IP addresses specified in IP address segment in the Configure DHCP area can only be use for the deployment. After the deployment is successful, the IP addresses of each node are changed to those as planned in the configuration file.
A. True
B. False
An N8500 clustered NAS storage system cannot be logged in to using the master account. Which is the possible cause?
A. The console IP address conflicts with another IP address on the network.
B. The network port corresponding to the console IP address is not connected to a network cable or is in the shutdown state.
C. The user name and password have been changed.
D. A heartbeat link is down.
Which of the following statements about management ports on C72 nodes are correct? (Choose all that apply.)
A. When the OceanStor 9000 cluster contains only C72 nodes and the number of C72 nodes is not smaller than three, each controller module A of the first three nodes provides one NIC0 port as the management port.
B. When the C72 nodes and the non-C72 nodes are deployed together, you can select C72 nodes to provide independent management network ports.
C. When the C72 nodes and the non-C72 nodes are deployed together and applied to object storage service, only the node that provides independent management network ports can serve as an object storage management node.
D. When deploying a storage cluster, you need to separately assign an IP address to port NIC0 on the C72 node in the cluster.
Which is the correct sequence for powering on an OceanStor 9000 storage system?
A. Cabinet > switch > KVM > node
B. Cabinet > KVM > switch > node
C. Cabinet > switch > node > KVM
D. Cabinet > node > KVM > switch
