Proposed ILM policy for example 6: Data protection at three sites

In this example, the ILM policy is being updated for a three-site StorageGRID system.

After performing an expansion to add the new site, the grid administrator created two new storage pools: a storage pool for Data Center 3 and a storage pool containing all three sites (not the same as the All Storage Nodes default storage pool). Then, the administrator created two new ILM rules and a new proposed ILM policy, which is designed to protect data at all three sites.
Example ILM Policy 6 Proposed Policy

When this new ILM policy is activated, objects belonging to Tenant A will be protected by 2+1 erasure coding at three sites, while objects belonging to other tenants (and smaller objects belonging to Tenant A) will be protected across three sites using 3-copy replication.

Rule 1: Three-site erasure coding for Tenant A

Rule definition Example value
Rule Name Three-Site Erasure Coding for Tenant A
Tenant Account Tenant A
Storage Pool All 3 Data Centers (includes Data Center 1, Data Center 2, and Data Center 3)
Content Placement 2+1 erasure coding in All 3 Data Centers from day 0 to forever

Rule 2: Three-site replication for other tenants

Rule definition Example value
Rule Name Three-Site Replication for Other Tenants
Tenant Account Ignore
Storage Pools Data Center 1, Data Center 2, and Data Center 3
Content Placement Three replicated copies from day 0 to forever: one copy at Data Center 1, one copy at Data Center 2, and one copy at Data Center 3.