Disks and Aggregates Power Guide
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- Deciding whether to use the Disks and Aggregates Power Guide
This guide describes how to manage ONTAP physical storage. It shows you how to create, expand, and manage aggregates, how to work with Flash Pool aggregates, how to manage disks, and how to manage RAID policies. - Aggregate creation workflow
Creating aggregates provides storage to volumes on your system. Beginning in ONTAP 9.4, you can let ONTAP recommend aggregate configurations for your system (auto-provision). If the auto-provision method is not available or appropriate in your environment, you can configure aggregates manually. - Aggregate expansion workflow
Expanding an aggregate involves identifying the aggregate to expand, determining how much new storage is needed, installing new disks, assigning disk ownership, and creating a new RAID group if needed. - Managing aggregates
You create and manage your aggregates so that they can provide storage to their associated volumes. - Working with Flash Pool aggregates
You configure a Flash Pool aggregate by adding SSD RAID groups to an existing HDD aggregate. The SSD RAID groups can be composed of physical SSDs or allocation units from SSD storage pools. - Managing disks
You can perform various tasks to manage your disks, including removing a failed disk, removing data from a disk, and removing ownership of a disk. There are also tasks you can perform related to managing disks using root-data partitioning and related to self-encrypting disks. - Managing RAID groups
You can convert from RAID-DP to RAID-TEC for triple-parity protection, or from RAID-TEC to RAID-DP when a smaller aggregate no longer needs triple-parity protection. You can also customize the size of your RAID groups. - Appendix: Mirrored and unmirrored aggregates
You can use an optional feature called SyncMirror to synchronously mirror aggregate data in copies, or plexes, stored in different RAID groups. Plexes ensure against data loss if more disks fail than the RAID type protects against, or if there is a loss of connectivity to RAID group disks. - Where to find additional information
After you have setup the disks and aggregates for your storage system, you can perform additional tasks such as setting up volumes to contain your data. - Contacting Support
You can contact Support to obtain help for your issue. - Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area.
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