Overview of Huawei's AI Development Strategy and Full-Stack, All-Scenario AI Portfolio
Deduplication and compression capabilities of Huawei converged storage systems are broadly used in real production environments, particularly for virtual desktop infrastructure (VDI) and database workloads. Which of the following statements about data deduplication and compression is false?
AIn the adaptive deduplication and compression process, if the system detects that the fingerprints are different of the bytes are different after byte-by-byte comparison, the system compresses the data blocks.
BDuring inline deduplication, the system checks whether the fingerprint exists in the fingerprint library. If yes, the system determines that the block is an old block.
CDuring similarity-based deduplication in the background, the background analyzes the similarity-based deduplication opportunity table and performs similarity-based deduplication on data blocks with the same Similar Fingerprint (SFP).
DBackup storage supports deduplication and compression of file systems. For LUNs, only deduplication is supported.
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Overview of Huawei's AI Development Strategy and Full-Stack, All-Scenario AI Portfolio
Huawei flash storage devices offer multiple storage-protection solutions against ransomware attacks. Which of the following key technologies are used in Huawei’s SAN storage ransomware-protection solution?
Choose two
AAir Gap
BStorage encryption
CProtocol encryption
DDetection and analysis
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Huawei scale-out storage’s multi-tenant feature delivers unified, tenant-based resource management. Resources are managed and allocated by tenant. Which of the following statements about this feature are false?
AAn account can configure namespace quotas and file quantity quotas, but cannot configure dtree space quotas.
BThe account administrator allocates different namespaces to different accounts to isolate the namespaces. Each account has an independent NAS protocol instance.
CDomain controllers can be configured for accounts. Each account can be configured with multiple domain environments, including AD and NIS.
DThe admin account manages multiple accounts, and each account can create multiple namespaces.
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Overview of Huawei's AI Development Strategy and Full-Stack, All-Scenario AI Portfolio
Assume that a government office purchases a Huawei OceanStor Pacific 9550 storage device. During an inspection, an engineer observes that the LAN on motherboard (LOM) optical-port indicator on the device’s rear panel is steady yellow. This indicates that data is being transmitted at 25 Gbit/s.
ATRUE
BFALSE
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Huawei OceanProtect Appliance delivers robust data-protection capabilities. Which of the following statements about the Appliance’s functional architecture is correct?
AFile system management and protocol access are implemented by the data protection layer.
BDataEnable Engine is a data enabling module for global search and data anonymization.
CDuring data protection, the Appliance can protect application data without backup agents.
DProtectManager is a data flow module that performs data backup, restoration, replication, archive, and copy mounting.
A government customer has bought several Huawei flash storage systems for service deployment. To ensure the reliability of service data, an engineer configures the HyperSnap feature for file services on the storage systems.
Which of the following commands cannot be used to modify the basic properties of a file system snapshot?
Choose three
Achange hyper_cdp_schedule general
Bchange fs_snapshot restore
Cshow fs_snapshot general
Dchange fs_snapshot general
Assume that a government customer has purchased two Huawei all-flash storage devices for service deployment. While using the storage devices, an engineer discovers that storage performance fluctuates frequently. To troubleshoot the storage-performance fluctuation issue, the engineer must perform many operations.
Check whether there is an obvious change in the I/O model or service load when performance fluctuates.
Use FTDS, the storage-side latency-location tool, to analyze the modules with fluctuating latency.
Check whether the hit rate changes abruptly when performance fluctuates.
Check whether extremely small I/Os are present when performance fluctuates.
Check whether there are obvious hardware-resource bottlenecks on the storage side when performance fluctuates.
Check whether there are obvious storage background tasks when performance fluctuates.
Among these operations, which can be used for troubleshooting and which cannot?
AOperations 1, 2, and 3 can be used for troubleshooting, while operations 4, 5, and 6 cannot.
BOperations 1 and 2 can be used for troubleshooting, while operations 3, 4, 5, and 6 cannot.
COperations 4, 5, and 6 can be used for troubleshooting, while operations 1, 2, and 3 cannot.
DOperations 1, 2, 3, 4, 5, and 6 can all be used for troubleshooting.
Select
Select the answer that correctly completes the sentence.
uses Huawei’s optimized FlexEC algorithm. This algorithm allows the system to tolerate simultaneous failures of three disks, greatly shortening the reconstruction time and effectively addressing data protection challenges in the large-capacity disk era.
Cache policies and configurations contribute to storage-layer performance optimization for Huawei flash storage. Which statement about a cache’s high and low watermarks is false?
AGenerally, the high watermark of the cache should not be too high, and the difference between the high and low watermarks should not be too small.
BIf the high watermark of the cache is too high, I/O fluctuation and latency increase will occur usually when the current I/O traffic bursts.
CGenerally, the low watermark for storing dirty data in the cache should not be too low. The recommended value is 20%.
DIf the high watermark of the cache is too high, the write performance will be affected. If the low watermark of the cache is too low, read performance will be affected.
The OLAP database service scenario is different from the OLTP database service scenario. The OLAP database service scenario mainly involves random small I/Os with more read operations than write operations, whereas the OLTP database service scenario mainly involves sequential reads of large I/Os.
ATRUE
BFALSE
A financial customer buys several Huawei OceanStor Dorado series storage devices for service deployment. During O&M management, an engineer finds that an FC front-end port on a storage device is abnormal in DeviceManager: the port’s Health Status is displayed as “--”, and its Running Status is displayed as “Link down”.
After arriving onsite, the engineer observes that the FC front-end port link indicator is steady red. Which actions can the engineer take to locate the FC link fault?
Choose four
AThe engineer can check whether the optical module is faulty. If yes, the engineer can rectify the fault according to the alarm indicating that the optical module of the front-end port is faulty.
BThe engineer can check whether the optical module rate matches between the ports. If no, the engineer can rectify the fault according to the alarm indicating that the optical module rate does not match.
CThe engineer can check whether the rates of ports are consistent. If no, the engineer can contact Huawei engineers for onsite handling.
DThe engineer can check whether the optical module type matches between the ports. If no, the engineer can rectify the fault according to the alarm indicating that the optical module type does not match.
Suppose a financial customer has purchased multiple Huawei OceanStor Dorado 18000 storage devices to host service data. A Fibre Channel link exception occurs in the storage environment. Which of the following could cause this exception?
Choose three
AThe optical module rate of host ports does not match that of front-end storage ports.
BWhen a switch network is used, the configured rate of the Fibre Channel host port does not match that of the switch.
CThe optical fiber is poorly connected or faulty.
DThe IP address of the service network port on the application server is incorrectly set.
Huawei flash storage provides two directory-creation and distribution modes: balanced mode and performance mode. Performance mode offers the highest file read/write performance, so it is appropriate for scenarios such as data backup, archiving, and video and image storage.
ATRUE
BFALSE
A financial customer has purchased several Huawei OceanStor Dorado series storage devices for service deployment. During maintenance, an engineer needs to use DeviceManager to collect disk health analysis (DHA) logs.
Which of the following is not included in DHA logs?
AI/O statistics
BDisk life span information
CRoutine disk health statistics
DDevice latency statistics
Assume that a government customer has purchased several Huawei scale-out storage devices for service deployment. An engineer must configure file services for standard protocol scenarios. Which of the following actions is not required during configuration?
AEnable the file service for nodes.
BCreate namespaces.
CInstall DPC.
DCreate a converged storage pool.
An enterprise customer has purchased several Huawei all-flash storage devices for service deployment. During routine management, an engineer discovers that a controller on one device is faulty. Because this is a common fault, the engineer does not need to perform emergency handling.
ATRUE
BFALSE
A financial customer has bought a Huawei flash storage system for service deployment. An engineer configures the HyperCDP feature on the storage system and needs to create a HyperCDP schedule. Which of the following commands can the engineer use?
Achange hyper_cdp_schedule enabled
Bcreate fs_hyper_cdp general
Ccreate hyper_cdp_schedule general
Dadd hyper_cdp_schedule fs
An enterprise has bought several Huawei OceanStor Pacific series storage devices. An engineer wants to configure the CIFS share service on these devices. Which of the following statements about the service configuration are true?
Choose two
AAfter CIFs shares are allocated to domain users, the engineer cannot modify the domain user information. Otherwise, the CIFS shares cannot be accessed.
BBefore creating a converged resource pool, the engineer must enable the file service for nodes. Otherwise, subsequent operations cannot be performed.
CIn a domain environment, the engineer needs to create a local authentication user, add the local user to a user group, and use the group for authentication to access a share.
DIf a user’s service network has multiple network segments, the engineer can configure multiple subnets to enable clients in different service network segments to access the storage network.
SIMULATION
The LUN active-active balancing feature of Huawei all-flash storage integrates the global ________ design. The front-end interface board evenly distributes I/Os to the target controller for load balancing.
If a Huawei scale-out storage device is powered on and its power policy specifies that the device must not begin operating upon power-on, it will not automatically start after being connected to a power supply. In this situation, press the power button on the storage device’s front panel to start it.
ATRUE
BFALSE
In real production environments, Huawei converged storage’s HyperMetro feature ensures that customers’ services run without interruption. Which statement about HyperMetro is false?
AIn cross DC HyperMetro deployments involving long-distance transmission (a minimum of 25 km for IP networking and 80 km for Fibre Channel networking), dense wavelength division multiplexing devices must be used to ensure a low transmission latency.
BBy default, when creating a HyperMetro pair, the local storage system is set as the preferred site and the remote storage system as the non-preferred site.
CIf the quorum server is inaccessible, HyperMetro works in static priority mode. When an arbitration occurs, the preferred site wins the arbitration and provides services.
DThe data, logs, and change information of a medium- or large-sized database are stored on different LUNs of a storage system. Placing these LUNs in a protection group (PG) and then creating a HyperMetro consistency group for that PG can ensure data consistency in replication.
For Huawei flash storage devices, engineers must install enclosures on adjustable guide rails. In special circumstances, the storage devices may be stacked directly.
ATRUE
BFALSE
An industry customer has bought several Huawei flash storage devices for service deployment. An engineer needs to configure the HyperSnap feature on the storage devices. During configuration, however, the engineer finds that snapshots cannot be created for an existing protection group. A possible cause is that the storage pool in which the protection group's source LUNs reside has no available capacity.
ATRUE
BFALSE
Assume that a government office purchases the Huawei OceanProtect Appliance. Which statement regarding device initialization is false?
AThe engineer needs to configure service logical ports before configuring networks. If there are two OceanProtect backup storage nodes, at least two IP addresses must be reserved from the backup service network segment.
BIf the engineer uses the Network Time Protocol (NTP) automatic synchronization mode to configure the device time in a firewall-enabled environment, port 123 must be enabled.
CThe engineer needs to configure the Secure File Transfer Protocol (SFTP) service. If management data exists before the SFTP service is enabled, the management data file becomes invalid after the SFTP service is enabled.
DDuring network configuration, if the archive network and backup network are separate, the engineer needs to disable the function of reusing the backup network configuration.
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