When a company customer needs to complete data migration between devices, which features can be used to complete it? (Multiple choice)

• A.Remote replication
• B.LUN copy
• C.Smart Migration
• D.Clone

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A company has a variety of services such as mail and online storage, and has limited storage space. It plans to use Smart Thin technology to optimize storage space.
Regarding Smart Thin, which of the following statements are correct? (Multiple Choice)

• A.Smart Thin does not allocate all the space in advance, but presents the capacity form larger than the physical storage space to the customer
• B.Smart Thin does not support the creation of LUNs larger than the maximum physical free space of the storage pool
• C.Smart Thin virtualizes storage resources
• D.The implementation of Smart Thin is to allocate on demand

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All-flash memory (such as Huawei Oceanstor) uses the smartMation architecture to realize the front-end and back-end interconnection. The failure of any controller does not affect the normal business.

• A.True
• B.False

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Which of the following description about CIFS and NFS sharing is incorrect? (Multiple choice)
* If the file system has been set as a CIFS share and then an NFS share is added, the NFS share can only be set as read-only.
* If the file system has been set as an NFS share and then a CIFS share is added, the CIFS share can only be set as read-only.

* CIFS is a network-based sharing protocol, which requires high reliability of network transmission, so it usually uses TCP/IP. NFS is used for independent transmission, so it uses TCP or UDP.
* One disadvantage of NFS is that the client must be equipped with dedicated software. CIFS is integrated into the operating system and no additional software is required.
* NES is a stateless protocol. And CifS is a stateful protocol. After NFS connection fails, the connection can be automatically restored, but CIFS cannot. CIFS only sends a little redundant information, so it has a higher transmission efficiency than NFS.

• A.CIFS is a protocol based on network sharing, which has high requirements on the reliability of network transmission, so TCP protocol is usually used for transmission
• B.One disadvantage of CIFS is that Windows clients must install professional software
• C.NFS is a stateless protocol, while CIFS is a stateful protocol. NFS can automatically recover from link failures, while CIFS cannot
• D.Regardless of CIFS or NFS protocol, the client is required to perform file format conversion.

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Distributed storage uses system storage on the cloud and only provides object storage. If you need file storage, you need to purchase NAS equipment separately.

• A.False
• B.True

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