The scale-out storage system supports cabinet-level security. That is, N data blocks and M parity blocks are stored in different cabinets. If M nodes or M disks are faulty, the system can still read and write data without service interruption or data loss. If M cabinets are faulty, services may be interrupted.

The statement accurately describes the behavior of a scale-out storage system, such as Huawei OceanStor Pacific, that is configured for cabinet-level reliability using an N+M erasure coding scheme. The system is designed to withstand the failure of M failure domains (which can be disks, nodes, or entire cabinets) without data loss. The assertion that "If M cabinets are faulty, services may be interrupted" is a correct and practical qualification. A failure of this magnitude, while not leading to data loss, can cause a temporary disruption in service as the distributed system controller redirects I/O paths, rebuilds data, and manages the degraded state.

This question is of the True/False type. The alternative, "False," is incorrect because the statement is technically sound. Claiming the statement is false would imply that a failure of M entire cabinets would result in either guaranteed no service interruption or guaranteed data loss, neither of which is accurate. The system is designed to prevent data loss, but a momentary service interruption during such a large-scale failure event is a realistic possibility.

Huawei OceanStor Pacific Series 8.1.0 Product Documentation, "Feature Guide", Section: "Reliability > Erasure Code > Failure Domain Isolation". This section details how OceanStor Pacific distributes data and parity blocks across different failure domains (nodes, chassis, racks/cabinets) to ensure data reliability. It confirms that with rack-level reliability, the system can tolerate the failure of a specified number of racks (M) without data loss.

Huawei HCIP-Storage V5.0 Training Material (H13-624), "Chapter 6: Huawei Distributed Storage Key Features", Section: "Erasure Code". The material explains that erasure coding provides high reliability and that failure domains can be defined at the disk, node, chassis, or rack level to tolerate concurrent failures.