MIRROR VOTE SYNCHRONIZATION

摘要

One or more techniques and/or systems are provided for mirror vote synchronization. For example, a first storage device is located at a first storage site, and a second storage device is located at a second storage site. The second storage device is configured according to a data mirroring configuration where data from the first storage device is mirrored to the second storage device. Mirror vote metadata is generated based upon an up-to-date state of the data mirroring configuration. The mirror vote metadata indicates whether the first storage device and/or the second storage device are up-to-date or not. The mirror vote metadata may be replicated between the first storage site and the second storage site. If the first storage site fails, then the second storage site may provide switchover operation using the second storage device based upon the mirror vote metadata.

主权项

1. A method, comprising:
identifying, by a storage server, a first storage device maintained at a first storage site; identifying a second storage device maintained at a second storage site, the second storage device configured according to a data mirroring configuration for the first storage device; generating a local mirror vote based upon an up-to-date state of the data mirroring configuration; and replicating the local mirror vote from the first storage site to the second storage site to create a replicated mirror vote for utilization by the second storage site for determining whether the second storage device is up-to-date or out-of-date.