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How to identify partitions in ONTAP

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With Advance Disk Partitioning (ADP), a physical disk is divided into a small number of partitions at the storage level, and each partition is treated by RAID and HA as a logical disk. Aggregates are provisioned from partitions, instead of from whole disks. The ability to share a disk across nodes and aggregates helps greatly improve the storage efficiency on entry configurations, such as on 12 HDD and 24 HDD NetApp FAS systems, and on All-Flash FAS (AFF) systems. 

There are 2 types of disk partitioning:

There are two methods of data partitioning:

  • Root-data (RD): Divides a drive into one root partition (P2) and one data partition (P1)
  • Root-data-data (RD2): Divides a drive into one root partition (P3) and two data partitions (P1, P2)


This article provides multiple ways to identify paritions, including spares in your system.



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