OceanStor Dorado uses Huawei RAID 2.0+ and advanced all-flash reliability technologies to improve data protection. Option A is correct because RAID-TP provides triple-parity protection and can tolerate the simultaneous failure of three disks. Option B is also correct because HyperZoom dynamically adjusts RAID member composition after disk failures, helping the system maintain redundancy instead of remaining in a degraded state longer than necessary. Option D is correct because Dorado supports data distribution across disk enclosures, allowing the system to tolerate enclosure-level failures when properly configured. Option C is incorrect because Dorado does not rely on traditional independent hot spare disks. Instead, spare capacity is distributed across the storage pool, enabling faster reconstruction and avoiding the bottlenecks associated with dedicated hot spares. Therefore, A, B, and D are correct.
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