In general, in one aspect, a method for storing data, including receiving a request to store data in a storage pool, determining a quantized deadline for the request, placing the request in an Input/Output (I/O) queue using the quantized deadline, placing a copy of the request in a logical block address (LBA) data structure using a LBA corresponding to the copy of the request, issuing the request to the storage pool using the I/O queue, and issuing an adjacent request to the storage pool using the LBA data structure, wherein the adjacent request is determined using the LBA of the copy of the request.