Method and system for distributed RAID implementation
AssigneePivot3
InventorsWilliam C. Galloway, Ryan A. Callison, Greg J. Pellegrino, Choon-Seng Tan
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Abstract
Embodiments of the systems and methods disclosed provide a distributed RAID system comprising a set of data banks. More particularly, in certain embodiments of a distributed RAID system each data bank has a set of associated storage media and executes a similar distributed RAID application. The distributed RAID applications on each of the data banks coordinate among themselves to distribute and control data flow associated with implementing a level of RAID in conjunction with data stored on the associated storage media of the data banks.
Claims18
A system for implementing distributed RAID, comprising:
- a storage appliance of a plurality of storage appliances, the storage appliance including:
- a processor;
- a data store;
- a non-transitory computer readable medium comprising instructions executable to:
- receive a first command corresponding to a first data segment of a first volume from a host, wherein:
- the first volume comprises a first set of data segments, wherein the first set of data segments are stored on the plurality of storage appliances according to a first storage appliance order, the first storage appliance order is a first ordering of the plurality of storage appliances, and parity segments corresponding to a first RAID level implemented in conjunction with the first volume are distributed across the plurality of storage appliances according to the storage appliance order such that for each data segment of the first volume a parity segment comprising redundancy data associated with that data segment does not reside on the same storage appliance as that data segment;
- and
- determine a first storage appliance of the plurality of storage appliances based on the storage appliance order, wherein the first storage appliance corresponds to the first data segment, and if the first storage appliance is the storage appliance which received the first command execute the first command with respect to the first data segment, and
- if not, forward the first command to the first storage appliance.
A method for distributed RAID implemented a storage appliance of a plurality of storage appliances, comprising:
- receiving a first command corresponding to a first data segment of a first volume from a host, wherein:
- the first volume comprises a first set of data segments, wherein the first set of data segments are stored on a plurality of storage appliances according to a first storage appliance order, the first storage appliance order is a first ordering of the plurality of storage appliances, and parity segments corresponding to a first RAID level implemented in conjunction with the first volume are distributed across the plurality of storage appliances according to the storage appliance order such that for each data segment of the first volume a parity segment comprising redundancy data associated with that data segment does not reside on the same storage appliance as that data segment;
- and
- determining a first storage appliance of the plurality of storage appliances based on the storage appliance order, wherein the first storage appliance corresponds to the first data segment, and if the first storage appliance is the storage appliance which received the first command execute the first command with respect to the first data segment, and
- if not, forward the first command to the first storage appliance.
A non-transitory computer readable medium comprising computer executable instructions for implementing distributed RAID, the computer instructions executable for:
- receiving a first command corresponding to a first data segment of a first volume from a host, wherein:
- the first volume comprises a first set of data segments, wherein the first set of data segments are stored on a plurality of storage appliances according to a first storage appliance order, the first storage appliance order is a first ordering of the plurality of storage appliances, and parity segments corresponding to a first RAID level implemented in conjunction with the first volume are distributed across the plurality of storage appliances according to the storage appliance order such that for each data segment of the first volume a parity segment comprising redundancy data associated with that data segment does not reside on the same storage appliance as that data segment;
- and
- determining a first storage appliance of the plurality of storage appliances based on the storage appliance order, wherein the first storage appliance corresponds to the first data segment, and if the first storage appliance is the storage appliance which received the first command execute the first command with respect to the first data segment, and
- if not, forward the first command to the first storage appliance.
Dependencies are inferred from the claim text.