Patent ID: 9671967
Date: 2017-06-06
CPC Classifications: G06F

Claim:
1. A method for managing storage devices, comprising: receiving, at a first node, a write request to write data to a first storage tier in a storage system, the storage system further comprising a second storage tier, wherein writing the write request to the second storage tier is faster than writing the write request to the first storage tier; initially writing the write request as temporary data to a current operation log on the first node at the second storage tier, the temporary data being distributed across multiple nodes by replicating the current operation log on the first node to one or more other operation logs on other nodes based on a replication factor; sending a confirmation of the write request to an originator of the write request at a point in time at which the write data to be committed in the write request has not been committed to the first storage tier; setting a portion of the current operation log as read-only; and transferring contents of the portion of the current operation log set as read-only to the first storage tier.