Methods and systems for overwrite protected storage media
AssigneeQuantum Corporation
InventorsGeorge Saliba, Christopher King
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Abstract
According to one aspect of the invention, methods and systems for operating a magnetic storage media drive to perform read/write operations to magnetic storage media in an overwrite protected mode are provided. In one example, a method includes receiving a write request and associated write data and determining if the magnetic storage medium is overwrite protected. If the storage medium is overwrite protected the method includes writing the write data to the storage medium followed by an EOD marker associated with the end of the write data, allowing write operations to the storage medium after previously written data, and preventing write operations to the storage medium prior to previous EOD markers.
Claims41
A method for operating a magnetic storage media drive to perform write operations upon removable serially accessible magnetic storage media in an overwrite protected mode, the method comprising:
- receiving a write request and associated write data;
- determining if a magnetic storage medium is overwrite protected;
- and
- if the storage medium is overwrite protected
- writing the write data to the storage medium followed by an EOD marker associated with the end of the write data,
- allowing write operations to the storage medium after previously written data, and
- preventing write operations to the storage medium prior to a previous EOD marker.
A method for operating a magnetic storage media drive to perform write operations upon removable serially accessible magnetic storage media, the method comprising:
- loading a magnetic storage medium into a magnetic storage media drive;
- determining if the magnetic storage medium is an overwrite protected storage medium;
- if overwrite protected, initializing the storage medium in an overwrite protected mode, wherein the overwrite protected mode prevents the media drive from writing over previously written data and allows for write append operations;
- and
- writing write data to the storage medium followed by an EOD marker associated with the end of the write data.
A magnetic storage media drive system configured to perform operations to write data to magnetic storage media in an overwrite protected mode where previously stored data is preserved, the operations comprising:
- receiving a write request and associated write data from a host;
- determining if a storage medium is overwrite protected;
- and
- if the storage medium is overwrite protected
- writing the write data to the storage medium followed by an EOD marker associated with the end of the write data,
- allowing write operations to the storage medium after previously written data, and
- preventing write operations prior to an EOD marker.
A computer readable storage medium containing computer executable code for operating a magnetic storage drive to conduct write operations upon magnetic storage media in an overwrite protected mode by instructing the magnetic storage drive to operate as follows in response to receiving a write request and associated write data:
- determine if a storage medium is overwrite protected;
- and
- if the storage medium is overwrite protected
- write the write data to the storage medium followed by an EOD marker associated with the end of the write data,
- allow write operations to the storage medium after previously written data, and
- prevent writing operations to the storage medium prior to an EOD marker associated with the end of previous write data.
Dependencies are inferred from the claim text.