Number of faulty disks allowed by a V3 storage system


The maximum number of faulty disks allowed by a V3 storage system is related to the RAID level.

Other related questions:
Number of coffer disks in an OceanStor V3 storage system and capacity occupied by the coffer disks
The first four disks in the controller enclosure of the OceanStor 5300 V3/5500 V3 are planned as coffer disks. The first four disks in the first disk enclosure of the OceanStor 5600 V3/5800 V3/6800 V3 are planned as coffer disks. Coffer disks are used to store important data of a storage system. Each coffer disk occupies 5 GB of the capacity. Four coffer disks occupy 20 GB in total.

Number of PDUs in the system bay and disk bay of OceanStor 18000 V3 storage systems
For OceanStor 18000 V3 storage systems, a system bay has four PDUs, and a disk bay has two PDUs. The voltage of each PDU is 220 V and the current is 32 A.

Recommended number of disks in each disk domain of the OceanStor V3 storage
Each tier under each disk domain has a maximum of 50 disks. Each disk domain has fewer than 100 disks.

Disk enclosure layout on OceanStor V3 storage systems
All enclosures are evenly distributed among the SAS ports. The quantity difference of disk enclosures connected to each SAS port cannot exceed one. For details about the networking, see the Huawei Storage Networking Assistant:

Whether an entire disk domain fails to work if the engine of a V3 series unified storage system is faulty and if the disk domain crosses multiple engines
In this case, some disks in the disk domain can be read and written. If a host requests to access data on the faulty engine, a read/write failure message is returned.

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