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.

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 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.

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:

Principles and impact of expanding disk domains of OceanStor V3 storage systems
After the new disks are added to a disk domain, the system automatically performs migration to ensure that the used capacity of each disk is the same. The migration speed is related to the load of the disk domain. For example, if the I/O load on the disk domain is heavy, the migration speed is reduced; if the I/O load on the disk domain is light, the migration speed is relatively high. The migration speed has no major impact on the performance of a disk domain. However, it is still recommended to perform migration when the service load is light.

Rules for configuring the hot spare policy for OceanStor V3 unified storage systems
For OceanStor V300R001 storage systems, proper hot spare policies must be configured to ensure the reliability of the storage system. For details about planning the hot spare policy, see Planning the Capacity .

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