Storage device health status synchronization

摘要

One or more techniques and/or systems are provided for storage device health status synchronization. For example, a first health status registry is maintained for a first storage controller at a first storage site. The first storage controller stores storage device health status information of storage devices currently owned by or assigned to the first storage controller within the first health status registry. A second health status registry is maintained for a second storage controller at a second storage site. The second storage controller stores storage device health status information of storage device currently owned by or assigned to the second storage controller within the second health status registry. The first health status registry and the second health status registry are synchronized during operation of the first storage site and the second storage site and/or are merged between the first storage site and the second storage site after disaster recovery.

主权项

1. A method, comprising:
maintaining a first health status registry for a first storage controller at a first storage site, the first storage site comprising a first storage device; maintaining a second health status registry for a second storage controller at a second storage site, the second storage site comprising a second storage device; responsive to identifying a first health status change associated with the first storage device, creating a first entry within the first health status registry based upon the first health status change; generating a first registry synchronization update based upon the first entry; updating the second health status registry based upon the first registry synchronization update to create a first synchronized entry within the second health status registry; responsive to identifying a disaster of the first storage site:
assigning ownership of the second storage device to the second storage controller as a switchover aggregate; andresponsive to identifying a second health status change associated with the second storage device, creating a second entry within the second health status registry based upon the second health status change; and responsive to identifying restoration of the first storage site:
generating a second registry synchronization update based upon the second entry;updating the first health status registry based upon the second registry synchronization update to create a second synchronized entry within the first health status registry; andassigning ownership of the second storage device to the first storage controller for selective operation of the first storage device and the second storage device based upon the first health status registry, wherein access provided to the second storage device is based upon the second synchronized entry.