Patent ID: 8239653

Claim:
A method for supporting a storage environment, the storage environment including a first storage manager maintaining a first mapping of a virtual storage volume to a storage system and a second storage manager maintaining a second mapping of the virtual storage volume to the storage system, the method comprising: receiving from a computer system, at the first storage manager, a first writing request comprising first data to be written to the virtual storage volume; determining that the first writing request does not result in updating either the first mapping or the second mapping; writing, in response to determining that the first writing request does not result in updating either the first mapping or the second mapping, the first data from the first storage manager to the storage system based on either the first mapping or the second mapping; receiving from the computer system, at the first storage manager, a second writing request comprising second data to be written to the virtual storage volume; determining that the second writing request results in updating the second mapping; sending, from the first storage manager to the second storage manager in response to the second writing request, an updating request for updating the second mapping of the virtual storage volume to the storage system; wherein the second storage manager is responsible in updating the second mapping; receiving, at the first storage manager, an updated second mapping; and writing, from the first storage manager to the storage system, the second data based on the updated second mapping.