Patent ID: 8719497

Claim:
A method, comprising: providing a first storage volume to receive I/Os from a host and having a device ID, the first storage volume is in an active mode; providing a second storage volume to receive the I/Os from the first storage volume to replicate the first storage volume and having a device ID, the second storage volume is in a passive mode; and performing a recovery of the first storage volume comprising: shutting down a host; changing the second storage volume from the passive mode to the active mode after shutting down the host; changing the first storage volume from the active mode to the passive mode after shutting down the host; booting the host after changing the second storage volume from the passive mode to the active mode and changing the first storage volume from the active mode to the passive mode; and recognizing, at the host, the second storage volume as the first storage volume using the device ID of the second storage volume being identical to the device ID of the first storage volume.