Meaning of xD+yP in a RAID policy

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D indicates data disks and P indicates parity disks. xD+yP indicates x data disks + y parity disks.

Other related questions:
RAID parameter configuration
For details about creating a RAID group, refer to Creating a RAID Group for parameter configuration.

Server RAID array adjustment policies
The RAID array adjustment policies are as follows: ? For 2208 RIAD card, RAID level can be changed, and the available VD space can be expanded. ? For 3108 RAID card, only the available VD space can be expanded. The RAID level cannot be changed. ? For 2308 and 3008 RAID cards, RAID level and available VD space cannot be changed. For details, see http://support.huawei.com/enterprise/en/doc/DOC1000004186?idPath=7919749|9856522|21782478|19955021|21746286.

Introduction to a watermark policy of OceanStor 9000
OceanStor 9000 uses watermark policies to monitor the storage capacities in node pools. Based on the available capacities in node pools, OceanStor 9000 determines where to store new data.

RAID levels supported by OceanStor T Series unified storage systems
OceanStor T Series V100R005 unified storage systems support RAID 0, RAID 1, RAID 3, RAID 5, RAID 6, RAID 10, and RAID 50.

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