The water level refers to the percentage of total space used in the node pool, including the high water mark and read-only water level. When the Huawei OceanStor 9000 passes the water level threshold to limit the file storage and migration, which of the following description is wrong:
A. When the used space of the node pool reaches a high water level, the system reports an insufficient capacity alarm. By default, the alarm recovery threshold is 5% lower than the water level. That is, when the used space recovers below 80%, the alarm of insufficient capacity alarm recovery, the alarm
threshold and the alarm recovery threshold can be manually modified
B. When the node pool's used space reaches high water level and spill over is selected, the pool of nodes forbids writing data to any other node pool or specified node pool to write data
C. When the node pool's used space reaches high water level and no spill over is selected, the pool of nodes forbids writing data, and does not write data like other node pools
D. When the used space of the node pool reaches the read-only watermark, the system reports an alarm. The alarm recovery threshold defaults to 0% lower than the low watermark, read-only report Police recovery.
In the N8500 (V200R001) clustered NAS system, when the created file system is used for applications accessing large files sequentially, which of the following is correct?
A. In order to allow clients to access a single file system, N8000 can provide higher bandwidth and capacity, it is recommended to create a striped file system
B. Large file access business is a large IO sequential read and write, choose a smaller size of the strip and block size to provide higher bandwidth
C. From a performance perspective, it is recommended that the total number of files in a single file system be less than 80 million
D. For reliability, the recommended number of file systems is less than 40
Users use storage foundation HA cluster software and two Huawei blade servers to build a highly available environment for enterprises to provide important business 7 * 24 hour service. One day due to an abnormal power failure one of the servers can not start normally. When the cluster server is in a wait state what command should be issued?
A. hacf -verify
B. hastart -all
C. net start vcscomms
D. gabconfig -cx
In the N8500 (V200R001) system, when you run the gabconfig -a command on a cluster node, the system displays the following figure.
N8000V2R1-01-01 # gabconfig -a Port b gen bab409 membership 0123 Port f gen bab412 membership 0123 Port h gen bab40d membership 0123 Port v gen bab40d membership 0123 Port w gen bab40f membership 0123
You determine that the heartbeat members of the node is not started, you can use /etc/init.d/llt start to try to start it.
A. True
B. False
The OceanStor V3 storage smart patition can allocate independent cache space for different LUNs. The capacity of the cache space is shared by both read and write operations.
A. True
B. False
After the Cache mirror function between two controllers in the Ocenanstro T series storage array is enabled, the data of the two controllers and the cache are completely the same and a single controller failure does not affect data availability.
A. True
B. False
An Oracle client software is installed on the client host A, now there is a requirement to use it to access a remote database on host B, which of the following files need to be modified on the host A or B? (Multiple Choice)
A. listener.ora
B. The "profile" of oracle user
C. tnsnames.ora
D. pfile parameter file
True or false, with RedHat 6 using the storage array Huawei S5500T, when the storage array and the host are directly connected, the storage array host port can select a P2P network topology.
A. Correct B. mistakes
An OceanStor 18000 storage system carries the VDI service. The read/write ratio of the front-end workload is 2:8. The customer requires 20,000 IOPS to be offered. 10k rpm SAS disks (assuming that the average seek time is 3 ms) are used, and RAID 5 is configured. In this scenario, which is the minimum number of disks that must be configured for the storage system?
A. 600
B. 408
C. 387
D. 550
In the Huawei OceanStor storage array, the write cache high watermark is 80 and the low watermark is 20, and the service type is multiple-order small IO. To achieve better performance, it is advisable to adjust the water marks in which way?
A. high water to 90
B. high water to 70
C. low water line 10
D. low water line 30
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