Techniques For Data Storage Device Virtualization
First Claim
1. A data storage device comprising:
- virtual storage devices that are each assigned to a subset of data sectors in a non-volatile memory of the data storage device, wherein the data storage device receives configuration metadata for configuring each of the virtual storage devices from a host operating system in a standard format that is file system independent, the configuration metadata comprises a range of logical block addresses and a virtual storage device number assigned to each of the virtual storage devices, each of the virtual storage device numbers is a unique identifier used to differentiate between the virtual storage devices, and the data storage device uses the virtual storage device numbers and logical block addresses to identify data sectors in the virtual storage devices that are accessible by virtual machine operating systems.
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Abstract
A data storage device comprises virtual storage devices that are each assigned to a subset of data sectors in a non-volatile memory of the data storage device. The data storage device receives configuration metadata for configuring each of the virtual storage devices from a host operating system. The configuration metadata is received in a standard format that is file system independent. The configuration metadata comprises a range of logical block addresses and a virtual storage device number assigned to each of the virtual storage devices. Each of the virtual storage device numbers is a unique identifier used by the data storage device to differentiate between the virtual storage devices. The data storage device uses the virtual storage device numbers and logical block addresses to identify data sectors in the virtual storage devices that are accessible by virtual machine operating systems.
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Citations
20 Claims
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1. A data storage device comprising:
virtual storage devices that are each assigned to a subset of data sectors in a non-volatile memory of the data storage device, wherein the data storage device receives configuration metadata for configuring each of the virtual storage devices from a host operating system in a standard format that is file system independent, the configuration metadata comprises a range of logical block addresses and a virtual storage device number assigned to each of the virtual storage devices, each of the virtual storage device numbers is a unique identifier used to differentiate between the virtual storage devices, and the data storage device uses the virtual storage device numbers and logical block addresses to identify data sectors in the virtual storage devices that are accessible by virtual machine operating systems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data storage device that comprises code for operating virtual storage devices, wherein the code is stored on a computer readable medium, the data storage device comprising:
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code for configuring virtual storage devices in the data storage device by interpreting configuration metadata received from a host operating system in a standard format that is file system independent, wherein the configuration metadata comprises a range of logical block addresses and a virtual storage device number for each of the virtual storage devices, each of the virtual storage device numbers is a unique identifier used to differentiate between the virtual storage devices, and each of the virtual storage devices is assigned to a subset of a non-volatile data storage capacity of the data storage device; and code for using the virtual storage device numbers and logical block addresses to identify data sectors for the virtual storage devices that are accessible in response to read and write commands from virtual machine operating systems. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for using virtual storage devices, the method comprising:
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receiving configuration metadata in a data storage device from a host operating system, the configuration metadata being in a standard format that is file system independent; configuring virtual storage devices in the data storage device by interpreting the configuration metadata, wherein the configuration metadata comprises a range of logical block addresses and a virtual storage device number for each of the virtual storage devices, and each of the virtual storage device numbers is a unique identifier used to differentiate between the virtual storage devices; assigning each of the virtual storage devices to a subset of a non-volatile data storage capacity of the data storage device; and using the virtual storage device numbers and logical block addresses to identify data sectors in the virtual storage devices that are accessible in response to read and write commands from virtual machine operating systems, wherein a data storage capacity of each of the virtual storage devices is accessible by one of the virtual machine operating systems in a virtual machine. - View Dependent Claims (18, 19, 20)
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Specification