Patent application number | Description | Published |
20100199040 | Storage Subsystem And Storage System Architecture Performing Storage Virtualization And Method Thereof - A method for generating a virtual volume (VV) in a storage system architecture. The architecture comprises a host and one or more disk array subsystems. Each subsystem comprises a storage controller. One or more of the subsystems comprises a physical storage device (PSD) array. The method comprises the following steps: mapping the PSD array into a plurality of media extents (MEs), each of the MEs comprises a plurality of sections; providing a virtual pool (VP) to implement a section cross-referencing function, wherein a section index (SI) of each of the sections contained in the VP is defined by the VP to cross-reference VP sections to physical ME locations; providing a conversion method or procedure or function for mapping VP capacity into to a VV; and presenting the VV to the host. A storage subsystem and a storage system architecture performing the method are also provided. | 08-05-2010 |
20100199041 | Storage Subsystem And Storage System Architecture Performing Storage Virtualization And Method Thereof - Method for accessing data in a storage system architecture, the architecture comprises at least one disk array subsystem, comprising the following steps. Provide a SAS for managing a first and a second media extent (ME) the at least one subsystem. Obtain a location index corresponding to a host LBA via a BAT. Obtain a location information of a physical section located in the first ME corresponding to the location index via a physical section to virtual section cross-referencing functionality. Update the cross-reference in the cross-referencing functionality so that the location information obtained from the cross-referencing functionality corresponding to the location index is the location information of the second physical section. A host IO request addressing the host LBA accesses data in the second physical section utilizing the location information of the second physical section. | 08-05-2010 |
20100274977 | Data Accessing Method And Apparatus For Performing The Same - The present invention discloses a data accessing method and an apparatus for performing the method. Through a newly-defined host logical unit (HLUN), a unique HLUN number is given to each LUN-to-LD/Partition mapping relationship, and the HLUN is present to external hosts. Therefore, all of the hosts in the same storage system may recognize different logical units (i.e., HLUN). Hence, when processing an Input/Output (IO) request issued from any one host, a storage virtualization controller (SVC) can correctly find the corresponding LD/Partition for accessing data without identifying the identity of the host. | 10-28-2010 |
20130013828 | SAS STORAGE VISUALIZATION CONTROLLER, SUBSYSTEM AND SYSTEM USING THE SAME, AND METHOD THEREFOR - A storage virtualization computer system. The storage virtualization computer system comprises a host entity for issuing an IO request, a SAS storage virtualization controller coupled to the host entity for executing IO operations in response to the IO request, and at least one physical storage device, each coupled to the storage virtualization controller through a SAS interconnect, for providing data storage space to the storage virtualization computer system through the SAS storage virtualization controller. | 01-10-2013 |
Patent application number | Description | Published |
20100191927 | Method and Apparatus for Performing Volume Replication Using Unified Architecture - A method and apparatus for performing volume replication using a unified architecture are provided. Each volume has an exclusive volume log table (VLT) and an exclusive volume block update table (VBUT). The VLT is mainly used for recording the relationship between two volumes of a mirroring pair, and the VBUT is used for tracking the state of each data block of the volume itself. By means of the cross operations between the VLT and the VBUT, various volume replication processes such as volume copying and volume mirroring can be enabled under a unified architecture. Specifically, for each volume, different replication relationships with other volumes can be handled merely by administering its two exclusive tables. Hence, the method and apparatus provided by the present invention can advantageously simplify the architecture for synchronization replication and reduce the burdens of administrating tables, thereby making the operation of a storage system more efficient. | 07-29-2010 |
20100205392 | Method for Remote Asynchronous Replication of Volumes and Apparatus Therefor - A method for remote asynchronous volume replication and apparatus therefore are disclosed. Asynchronous replication is applied to deal with data changes on the source volume on the local site incurred by Host IO requests. In coordination with the “point-in-time differential backup” technology, the data is subjected to be backuped to Source BAS on the local site (backup-on-write operation) only when the original data being written into the block of the source volume is different from the data of the corresponding block of the destination volume on the remote site. As a result, once a new data is written into the source volume completely, the host will be responded that its Host IO request is completed. Therefore, the data necessarily transmitted to the destination volume on the remote site can be minimized, and the problem of remote data transmission limited by network bandwidth can be prevented effectively, thereby keeping the operation performance of the storage system at a better level. | 08-12-2010 |
Patent application number | Description | Published |
20120331251 | POOL SPARES FOR DATA STORAGE VIRTUALIZATION SUBSYSTEM - A data storage virtualization subsystem (SVS) for providing storage to a host entity is disclosed. The SVS comprises a storage virtualization controller for connecting to the host entity, at least one physical storage device (PSD) pool, and at least one PSD is designated to be a pool spare PSD to the at least one PSD pool. The at least one PSD pool comprises at least one enclosure for receiving the PSD, and at least one ID-storing device to store a pool ID for identifying the at least one physical storage device pool. | 12-27-2012 |
20130013827 | STORAGE VIRTUALIZATION COMPUTER SYSTEM AND EXTERNAL CONTROLLER THEREFOR - A storage virtualization computer system. The storage virtualization computer system comprises a host entity for issuing an IO request, a storage virtualization controller coupled to the host entity for executing IO operations in response to the IO request, and a at least one physical storage device, each coupled to the storage virtualization controller through a point-to-point serial-signal interconnect, for providing storage to the storage virtualization computer system through the storage virtualization controller. As an example, the point-to-point serial-signal interconnect can be a Serial ATA IO device interconnect. | 01-10-2013 |
20140068200 | Storage Subsystem And Storage System Architecture Performing Storage Virtualization And Method Thereof - A method for generating a virtual volume (VV) in a storage system architecture. The architecture comprises a host and one or more disk array subsystems. Each subsystem comprises a storage controller. One or more of the subsystems comprises a physical storage device (PSD) array. The method comprises the following steps: mapping the PSD array into a plurality of media extents (MEs), each of the MEs comprises a plurality of sections; providing a virtual pool (VP) to implement a section cross-referencing function, wherein a section index (SI) of each of the sections contained in the VP is defined by the VP to cross-reference VP sections to physical ME locations; providing a conversion method or procedure or function for mapping VP capacity into to a VV; and presenting the VV to the host. A storage subsystem and a storage system architecture performing the method are also provided. | 03-06-2014 |
20140115287 | METHOD AND APPARATUS FOR PERFORMING VOLUME REPLICATION USING UNIFIED ARCHITECTURE - Method and apparatus for performing volume replication using a unified architecture are provided. Each volume has an exclusive volume log table (VLT) and an exclusive volume block update table (VBUT). The VLT is mainly used for recording the relationship between two volumes of a mirroring pair, and the VBUT is used for tracking the state of each data block of the volume itself. By means of the cross operations and applications between the VLT and the VBUT, various volume replication processes such as volume copying and volume mirroring can be enabled under a unified architecture. For each volume, different replication relationships with other volumes can be handled merely by administering its two exclusive tables. The method and the apparatus provided by the present invention can simplify the architecture for synchronization replication and reduce the burdens of administrating tables, thereby making the operation of a storage system more efficient. | 04-24-2014 |
20140351548 | Pool Spares for Data Storage Virtualization Subsystem - A data storage virtualization subsystem (SVS) for providing storage to a host entity is disclosed. The SVS comprises a storage virtualization controller for connecting to the host entity, at least one physical storage device (PSD) pool, and at least one PSD is designated to be a pool spare PSD to the at least one PSD pool. The at least one PSD pool comprises at least one PSD to store user data or associated redundant information and is given a pool ID for identifying the PSD pool. | 11-27-2014 |