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| Section | Weight | Objectives |
|---|---|---|
| OceanProtect Backup Storage | 10% | - Highlights of Huawei OceanProtect backup storage |
| NAS Storage Basis | 12% | - Protocols, file system and main NAS technologies |
| OceanStor Pacific | 10% | - Highlights of Huawei OceanStor Pacific scale-out storage |
| Data Storage Basis | 8% | - Storage basis: basis of disks and data protection |
| SAN Storage Basis | 17% | - Networking, protocols and main SAN technologies |
| OceanStor Dorado | 15% | - Highlights of Huawei OceanStor Dorado all flash storage |
| Backup and Disaster Recovery | 10% | - Main conceptions and technologies |
| Object Storage Basis | 10% | - Protocols and main object features |
| OceanStor New Hybrid Flash Storage | 8% | - Highlights of Huawei OceanStor hybrid flash storage |
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NEW QUESTION # 50
Through what feature does Dorado support stable and convenient system upgrade?
Answer: B
Explanation:
Huawei OceanStor Dorado supports Non-disruptive Upgrade (NDU), which allows the storage system's software (firmware) to be upgraded while services are running. In a traditional storage environment, an upgrade might require a system reboot or cause a failover that interrupts I/O for several seconds or minutes. However, Dorado's NDU leverages the multi-controller architecture and advanced caching mechanisms.
During an NDU, the system upgrades controllers one by one or in batches. While one controller is being upgraded and rebooted, its workloads are transparently taken over by other active controllers in the same cluster. Because the host-side multipathing software handles the path failover and the storage system maintains cache mirroring, the application servers experience zero downtime and negligible performance impact. This feature is essential for mission-critical environments that require 24/7 availability and cannot afford scheduled maintenance windows for routine software updates.
NEW QUESTION # 51
What will RAID 6 (7+2) change into after dynamic reconstruction of OceanStor Dorado if one SSD failed in a
9-SSD storage pool?
Answer: C
Explanation:
Huawei OceanStor Dorado utilizes RAID 2.0+ block virtualization technology, which supports Dynamic RAID Reconstruction. In a traditional RAID environment, if a disk fails, the RAID group continues to operate in a " degraded " mode until the disk is replaced. However, in Dorado ' s RAID 2.0+, the system uses a distributed spare space policy where spare capacity is spread across all disks in the pool.
When one SSD fails in a storage pool originally configured with RAID 6 (7 data chunks + 2 parity chunks), the system identifies that it no longer has enough physical disks to maintain a 7+2 stripe width. To maintain the same level of protection (dual parity) while utilizing the remaining 8 disks, the system dynamically adjusts the RAID policy for new writes and reconstructed data to RAID 6 (6+2) . This ensures that the data remains protected by two parity chunks even with a reduced disk count. This " shrinkage " of the stripe width allows the system to remain in a " healthy " protected state rather than staying in " degraded " mode indefinitely.
NEW QUESTION # 52
In an SCSI-3 model, the server is the target, and the SAN storage is the initiator.
Answer: A
Explanation:
The statement is false because it reverses the SCSI-3 communication roles. In a SAN environment, the application server or host normally acts as the initiator. The initiator sends SCSI commands such as read and write requests to the storage system. The SAN storage system acts as the target because it receives those commands and provides block-level storage resources, such as LUNs, back to the server.
This initiator-target model is fundamental in FC SAN, iSCSI SAN, and other block storage architectures. Huawei OceanStor SAN storage follows the same principle: hosts access storage volumes through initiator ports, while the storage array exposes target ports and logical units. Therefore, saying that the server is the target and the SAN storage is the initiator is technically incorrect.
NEW QUESTION # 53
In an SCSI-3 model, the server is the target, and the SAN storage is the initiator.
Answer: A
Explanation:
In the SCSI-3 model, the server (host) acts as the initiator, which sends SCSI commands, and the SAN storage acts as the target, which responds to those commands. The statement reverses these roles, so it is incorrect.
NEW QUESTION # 54
What is the function of a BBU?
Answer: B
NEW QUESTION # 55
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