The following description about Huawei RAID2.0+ technology is correct: (multiple choices)

• A.The hard disk type of each storage layer in the hard disk domain is the same
• B.The hard disk space is divided into fixed-size blocks
• C.Users can set "RAID policy" for each storage layer in the storage pool
• D.grain as the minimum granularity of data migration and the basic unit that constitutes Thin LUN

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Statement 1: Multimode optic cables are usually longer than single mode cables.
Statement 2: Sharp cable bends lead to weaker signal at the end of the cable.

• A.Statement 1 is true and statement 2 is false.
• B.Both statements 1 and 2 are false.
• C.Statement 1 is false and statement 2 is true.
• D.Statements 1 and 2 are both true.

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What is the main purpose of backup battery units (BBU) in storage controllers?

• A.To power the interface modules.
• B.To provide additional power to storage controller to speed up the I/O.
• C.To maintain the power for clock synchronization.
• D.To ensure that the non completed I/O is not lost during power outage.

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Which of the following is not the benefits of converged storage systems?

• A.Unified management of storage resources.
• B.Saving of rack space due to integration of equipment into one device.
• C.Converged storage system has better data protection compared to other non-converged systems.
• D.The same device is able to provide both block storage and file storage.

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The hard disk domain supports online addition of hard disks, and the storage pool supports online expansion.

• A.TRUE
• B.FALSE

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