There are situations where we may wish to shard the hybrid log across multiple devices. For example, we can scale bandwidth to Azure storage by creating multiple storage accounts and associating an IDevice with each storage account. We can support such scenarios by creating the notion of a sharded storage device that will shard the data at a specified granularity, e.g., 4K pages or 512 byte sectors, across a provided fixed set of 2^k IDevice instances.

Sharded storage device may interoperate with tiered storage device as well, i.e., each tier may be a sharded storage device.