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examout.co

The InfoLocker feature of OceanStor 9000 can be used to meet the business scenario of “write once and read many times”.

A.

True

B.

False

A.

When there is no replication requirement, the required bandwidth (without deduplication) = total backup data volume ÷ backup window ÷ bandwidth utilization.

B.

When there is a replication requirement, the required bandwidth (with deduplication) = the amount of replicated data ÷ the replication window ÷ bandwidth utilization.

C.

When there is no copy requirement, the required bandwidth (media end deduplication) = total backup data volume ÷ deduplication ratio ÷ backup window ÷ bandwidth utilization.

D.

No recovery For system requirements, the required bandwidth (source-end deduplication) = total backup data volume ÷ backup window ÷ bandwidth utilization.

The phone is accessing the LINUX client of the Oceanstor 9000 cluster, which can appropriately reduce the number of concurrent NFS on the client.

To improve access performance

A.

True

B.

wrong

A colleague is working on a dual-active disaster recovery plan. By testing the arbitration server to the storage system at both ends, the bandwidth is 4Mbit/s, and the delay is 4Mbit/s.

RTT≤40ms, and packet loss rate≤1%, then this scheme:

A.

Not feasible, because the active-active disaster tolerance bandwidth must not be less than 10Mbit/s.

B.

Feasible, because it meets the conditions of the active-active disaster recovery plan.

C.

Not feasible, because the packet loss rate of active-active disaster recovery must be ≤0.1%.

D.

Not feasible, because the delay of active-active disaster recovery RTT≤120ms

What professional storage value-added features does the HDFS interface provide for Hadoop business? (multiple choice)

A.

Remote replication

B.

Snapshot

C.

NDMP backup

D.

HtyperMetro

HyperMetro guarantees the real-time synchronization of data between the storage arrays of the two sites through the cross-site data real-time mirroring function.

The data center array needs to record the write log when it receives the write I/O. Only the address information is recorded in the log, and the specific write data content is not recorded. The log

Use memory space recording with power-down protection capability to obtain good performance.

A.

True

B.

False

The following description does not belong to the features of 0ceanStor9000:

A.

Self-developed distributed file system OceanStor DFS supports massive unstructured data storage and realizes a global unified namespace.

B.

Provide object storage services, compatible with Amazon S3 interface and compatible with OpenStack Swift interface.

C.

Support for docking Fusionlnsight Hadoop/Cloudera Hadoop packaged by open source Hadoop components, allowing users

Easily build an enterprise-level big data analysis platform.

D.

Distributed metadata management, supporting linear expansion of 3~4000 nodes

exhibition.

Huawei Oceanstor 9000 FTP service features include: (multiple choice for this question)

A.

The unit of FTP sharing is a directory, and the shared directory can be accessed by multiple clients

B.

It can provide the status of business nodes to achieve load balancing, and data access is evenly distributed in the cluster.

C.

Provide shared services externally in a cluster mode, and nodes can monitor each other's service status

D.

Compatible with multiple operating systems

The backup system network that can be used for all storage types is:

A.

LAN-Base

B.

LAN-Free

C.

Server-Less

D.

Server-Free