The OceanStor 9000 log analysis tool is used to analyze the results of information collected and propose solutions to problems using on-site product maintenance tools. Which of the following statements are wrong regarding the use of log analysis tools? (Multiple choice)
Existing set customer of database uses a raw device, due to the large amount of data in the database. The customer plans to replace the old storage with new storage devices.
In the process of environmental inspection lvcb engineers found the following:
#getlvcb -TA sjklv
Intrapolicy =
copies = 0
interpolicy =
lvid =
lvname =
label =
machine id =
number Ips = 0
relocatable =
strict =
stripe width = 0
stripe size in exponent = 0
type =
upperbound = 0
fs =
time created = time modified =
As the vg is too large, the expansion of vg is impossible. As the service window is very short, and customers do not want to avoid the risk of large adjustments of the whole original environment, what is the recommended approach?
OceanStor V3 storage resources are mapped to the bare devices on the host. The host creates a dedicated file system on the host. The test tool is used in the file system. The system produces a large number of 13KB size files, you randomly read these files to test the response time. Changing the prefetch length of 16KB can improve system performance in this case.
Customers set up a vio server environment on an IBM server, and the storage devices connected to the server through vio server provide storage space to a virtual partition in the server. Customers buy Huawei Oceanstor18000 deposit Storage and plan to replace the original storage device. What is the recommended best practice?
The peak write bandwidth for an application is 10MB / S, with an average write latency of 200KB / s and an average write IO size of 4KB (bandwidth utilization of 70%).
If you need to use OceanStor V3 storage array to implement data disaster recovery and set it as asynchronous replication mode, you need the minimum network-wide bandwidth of which of the following?
The MTTR indicator is used to describe the average continuous time of the failure of a product during operational use or testing.
When a Simpana backup client failed to perform the backup task, the status reported the following error "failed to connect to indexing process from client [client] to [MediaAgent * MediaAgent * 8400 * 8402] .Error [Inability to connect to remote machine[MediaAgent] .Please check Network Connectivity or the machine may be down]." You check the client and the media service devices are normal. The possible reasons for this problem are:
In a clustered environment, data is placed on the shared storage, and identities between peers are equal and have the same access to the data. It is required that the clusterware have a control mechanism for concurrent access to such peer permissions. In Oracle RAC, you use the _____ mechanism to do multiple node-to-node collisions control of access.
VMware's storage resources can be provided through VMFS, native direct-attached storage via ESXi host-FC / FCOE or iSCSI link of the shared storage. You can also share the file system over the NFS network to support third-party NAS storage.
Which of the following is incorrect regarding the VTL6900 data deduplication featuree?
Which description of OceanStor V3 storage system tuning process is incorrect?
Which of the following is not an authentication method supported by the OceanStor 9000 NFS protocol?
VTL 6900 engines A and B nodes form a cluster, on the A, B node between the business bearer and the fault automatically switch, which of the following description is correct? (Multiple choice)
Information of the disaster recovery research Beijing project mainly includes three aspects (Who / What / Why) description. Which of the following is true? (Multiple choice.)
In the Huawei OceanStor system, the size of the file system block is a measure of the size of the accessed file system block. The size of the block is designed according to the size of the data block. Different size of the file system block selects the corresponding file system block, according to the size of the data block. If the business scenario is the media, for large file archiving or stagger I / O backup scenarios, it is recommended to choose the default 64KB disk block size.
A RedHat Linux 6 system includes a specific file folder read and write errors, the file system needs to be modified after the diagnosis. Which of the following is the correct repair operations?
True or False, the SE Sparse virtual disk is a virtual disk format that reclaims space after the virtual machine's operating system has expired data or deleted data.
Huawei Standard Edition N8500 has two nodes named Pubeth1 and Pubeth4. It opened the NFS service. NFS server accepts recovery after NFS guest.
However, the client mount point can not be accessed into the directory for a long time without echo. What do you need to do to fix it?
Which of the following feature is correct about the OceanStor V3 volume mirroring? (Multiple choice.)
In simpana backup software, incremental backup means _______.
What is correct about the reconstruction of the Huawei OceanStor V3 storage system? (Multiple choice.)
A customer deploys a set of OceanStor V3 storage in two cities and adopts asynchronous remote replication networking between the two storage arrays. Which of the following statement is correct? (Multiple choice.)
In the simpana-based backup solution, where can you the normal service log?
Huawei Oceanstor 900 adopts erasure code technology to protect the data. If an office has six nodes, and the customer wants to have one office, what redundancy model protection level can be used? (Multiple choice.)
Users use vsphere 5.5 to build business virtualization. In the course of the operation it was found that a host was using too many SCSI reservations, leading to vmfs performance degradation. What method can be used to eliminate the root cause of SCSI reservation conflicts? (Multiple choice.)
A Simpana client fails to perform a backup. When you view the status of the task, it reported the following error "library, media Agent, Drive pool, Media: mount path is offline: please check if the mount path is online and accessible ".
What may can be the cause of this problem?
Which of the following statement about RAID 2.0 is correct? (Multiple choice.)
The Redhat Linux Enterprise 6 cp command is used to complete the operating system data migration. What steps are needed to verify the transfer? (Multiple choice.)
Which command will modify vg01 into vg - app without affecting the HPUX 11.31 system volume group?
Which of the following best practice descriptions of Oralce database is correct? (Multiple choice.)
Maintaining a persistent connection between host and storage, ESXi must support multipathing. Which of the following statements is incorrect regarding multipathing for VMware vSphere 5.5?
Which of the following is not part of the storage troubleshooting process?
You want to partition a hard disk on a Windows Server 2008 R2 system, which of the following should you do?
Which of the following VMWARE virtual machine scenarios can use VADP backup?
The CIFS share cifs_share_001 is configured through the OceanStor deviceManager management interface of OceanStor 9000, and the configured share properties are as follows:
(1) share named cifs_dir_001
(2) read-only access
(3) Using local authentication user mode, user name cifsuser001, password Password @ 123;
One of the front-end IP addresses of the OceanStor 9000 storage system is 96.69.35.7.
Which of the following descriptions is correct?
When designing SQL server database disaster recovery, the calculation of disaster recovery capacity must consider which of the following file size? (multiple choice)
With Redhat linux enterprise 6 system the df and du commands allow you to see the mnt capacity, as shown below. What causes the capacity shown to not be the same?
redhat: ~ # df -h / mnt
Filesystem Size Used Avail Use% Mounted on
/ dev / sdb 1008M 514M 443M 54% / mnt
redhat: ~ # du -hs / mnt
40k / mnt
Info Replication supports copying the data at the same time using the home directory, extended attributes, ACL (access control list), WORM, and CIFS. NFS configuration information is also copied to the slave. When a disaster occurs, the master and slave stations can quickly take over after the switchover.
Which statement about SmartMigration functions is false during a SmartMigration-based migration?
Create LUNs on an OceanStor V3 storage system. Set the initial space allocation policy to be automatic. Create LUN 1, and 80% of its space comes from the capacity tier. Create LUN 2 in the same storage pool. It can be concluded that 0% of LUN 2's space comes from the performance tier.
The Huawei Oceanstro storage system uses asynchronous multi-time cache for asynchronous remote replication to make the remote asynchronous RPO index of the LUN reach the second level.
Which of the following statements about Huawei OceanStor V3 series storage array synchronous remote replication and asynchronous remote replication is incorrect? (Multiple choice)
After the smart migration configuration is complete, you add the LUN ID and data volume ID of the source LUN at the start of the migration to 1 and 2 respectively, and specify the LUN ID of the target LUN. And data volume ID named 3 and 4. When the migration is complete, the LUN ID and data volume ID of the source LUN and the target LUN are:
A file system in a clustered NAS system performs heartbeat synchronization between nodes. When the heartbeat is interrupted, the N8000 cluster is split into multiple small groups, resulting in data loss. The N8000 provides a fencing function to avoid the occurrence of the split-brain issue. Which of the following descriptions of the role of fencing correct?
Which of the following is true about the principle of Huawei Oceanstor V3 smart cache: (multiple choice)
Which of the following are the basic principles of storage troubleshooting? (multiple choice)
Scale out is a scale-out architecture that upgrades storage systems typically by increasing the number of nodes by expanding more controllers to meet user data growth demand. Huawei OceanStor V3 storage system supports the use of smart IP card to achieve IP scale out.
To use the storage space of OceanStor V3 more efficiently, a customer has specified file system quotas for different departments. If a soft quota alarm is generated for the file system used by department A, which methods can be used to clear the alarm and ensure that new data can be successfully written?
(Multiple Choice)
Because the first three nodes of Huawei OceanStor 9000 form an ISM cluster, you need to connect NIC0 of the first three storage nodes to the management switch.
Under the condition of synchronous replication, the peak write bandwidth of an application is 16 MB / s, the average write bandwidth is 500 KB / s, and the average write IO is 8 KB. If the bandwidth utilization rate is 80%, then the disaster recovery end network bandwidth should not be less than:
A customer's database application is running on an OceanStor V3 storage system. The database uses six LUNs. The customer wants to migrate data from the OceanStor V3 storage system to an OceanStor 18000 series storage system based on the functions provided at the storage side. Which statements are true?
(Multiple Choice)