Caching and tiering for cloud storage

A system for managing storage allocation, the system comprising:

• a storage device management system to:
• manage a plurality of storage pools, each of the plurality of storage pools including a plurality of storage devices arranged in a tiered structure with solid state drives (SSDs) in a performance tier, and where the SSDs from one storage pool of the plurality of storage pools is not shared with storage devices of another storage pool of the plurality of storage pools;
• maintain an access history and access consistency of each of a plurality of storage blocks of SSDs managed by the storage device management system;
• and
• automatically configure each of a plurality of storage blocks to operate in cache mode or tier mode, wherein a ratio of storage blocks operating in cache mode and storage blocks operating in tier mode is based on the access history;
• wherein to automatically configure each of the plurality of storage blocks, the storage device management system is to:
• configure storage blocks with a relatively high average access frequency and a relatively high access consistency to operate in tier mode;
• and
• configure storage blocks with a relatively low average access frequency and a relatively low access consistency to operate in cache mode.

At least one non-transitory machine-readable medium including instructions for managing storage allocation at a storage device management system, which when executed by the storage device management system, cause the storage device management system to:

• manage a plurality of storage pools, each of the plurality of storage pools including a plurality of storage devices arranged in a tiered structure with solid state drives (SSDs) in a performance tier, and where the SSDs from one storage pool of the plurality of storage pools is not shared with storage devices of another storage pool of the plurality of storage pools;
• maintain an access history and access consistency of each of a plurality of storage blocks of SSDs managed by the storage device management system;
• and
• automatically configure each of a plurality of storage blocks to operate in cache mode or tier mode, wherein a ratio of storage blocks operating in cache mode and storage blocks operating in tier mode is based on the access history;
• wherein to automatically configure each of the plurality of storage blocks, the storage device management system is to:
• configure storage blocks with a relatively high average access frequency and a relatively high access consistency to operate in tier mode;
• and
• configure storage blocks with a relatively low average access frequency and a relatively low access consistency to operate in cache mode.

A method of managing storage allocation, the method comprising:

• managing;
• at a storage device management system, a plurality of storage pools;
• each of the plurality of storage pools including a plurality of storage devices arranged in a tiered structure with solid state drives (SSDs) in a performance tier, and where the SSDs from one storage pool of the plurality of storage pools is not shared with storage devices of another storage pool of the plurality of storage pools;
• maintaining an access history and access consistency of each of a plurality of storage blocks of SSDs managed by the storage device management system;
• and
• automatically configuring each of a plurality of storage blocks to operate in cache mode or tier mode, wherein a ratio of storage blocks operating in cache mode and storage blocks operating in tier mode is based on the access history;
• wherein automatically configuring each of the plurality of storage blocks comprises:
• configuring storage blocks with a relatively high average access frequency and a relatively high access consistency to operate in tier mode;
• and
• configuring storage blocks with a relatively low average access frequency and a relatively low access consistency to operate in cache mode.