Explanation
OceanStor Dorado high-end product can tolerate 7 out of 8 controllers failed, with SmartMatrix architecture.
This is because the SmartMatrix architecture supports cross-engine active-active mode, which means each controller can access any LUN in the system. Therefore, even if only one controller is left, the system can still provide services. Reference: Pre-release Announcement for Huawei Specialist Certification HCSA-Presales-Storage V4.0 (English Version)

Explanation
OceanStor Pacific is a distributed storage system that supports multiple scenarios, such as object resource pool, block resource pool, and HPC. OceanStor Pacific provides object storage service with S3 protocol for unstructured data storage, such as images, videos, documents, and logs. It supports massive data volumes ranging from hundreds of TBs to EBs3. OceanStor Pacific also provides block storage service with iSCSI protocol for structured data storage, such as databases and virtual machines. It delivers high performance, low latency, and high reliability for mission-critical workloads4. OceanStor Pacific also provides HPC storage service with POSIX file system for high-performance computing scenarios, such as oil exploration, gene sequencing, and autonomous driving. It supports concurrent access from millions of nodes and delivers ultra-high throughput and bandwidth5.

Explanation
Dorado can provide secure snapshot as an anti-ransomware function. Secure snapshot is a feature that allows users to create read-only copies of data at a specific point in time. Secure snapshots are protected from deletion or modification by ransomware or unauthorized users. Secure snapshots can also be used to quickly restore data to a previous state in case of ransomware attacks .

Explanation
SmartMatrix is a feature that helps OceanStor Dorado high-end storage get higher reliability than others.
SmartMatrix is a fully interconnected and fully redundant matrix architecture that consists of multiple controllers, switches, and interconnects. It provides multiple data paths and ensures no single point of failure.
SmartMatrix also supports online controller replacement and fault isolation, which improves the availability and serviceability of OceanStor Dorado. Reference: [OceanStor Dorado All-Flash Storage Product Brochure]