Configuring ILM rules

Before you can create and activate the ILM policy for your StorageGRID Webscale system, you must define object storage locations, determine the types of copies you want, optionally configure S3 regions, and create one or more rules.

About this task

When configuring ILM rules:
  • Consider the StorageGRID Webscale system’s topology and storage configurations.
  • Consider what types of object copies you want to make (replicated or erasure coded) and the number of copies of each object that are required.
  • Determine what types of object metadata are used in the applications that connect to the StorageGRID Webscale system. ILM rules filter objects based on their metadata.
  • Consider where you want object copies to be placed over time.

Steps

  1. Creating and assigning storage grades
    A storage grade identifies the type of storage used by a Storage Node to store object data, for example, flash or spinning disk. If you use more than one type of storage, you can optionally create a storage grade to identify each type. Creating storage grades makes it easier to select the Storage Node when configuring storage pools.
  2. Configuring storage pools
    A storage pool is a logical grouping of Storage Nodes or Archive Nodes. You configure storage pools to determine where object data is stored. You select storage pools that use Storage Nodes when you create Erasure Coding profiles. You select storage pools that use Storage Nodes or Archive Nodes when you configure ILM rules for replication.
  3. Configuring an Erasure Coding profile
    You create an Erasure Coding profile by associating a storage pool with an erasure coding scheme, such as 6+3. Then, when you configure the placement instructions for an ILM rule, you can select the Erasure Coding profile. If an object matches the rule, data and parity fragments are created and distributed to the storage locations in the storage pool according to the erasure coding scheme.
  4. Configuring regions (optional and S3 only)
    ILM rules can filter objects based on the regions where S3 buckets are created, allowing you to store objects from different regions in different storage locations. If you want to use an S3 bucket region as a filter in a rule, you must first create the regions that can be used by the buckets in your system.
  5. Creating an ILM rule
    ILM rules allow you to manage the placement of object data over time. To create an ILM rule, you use the Create ILM Rule wizard.
Parent topic: Managing objects through information lifecycle management
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Part number: 215-12402_2019-08_en-us
August 2019