Write protection in a storage system allowing both file-level access and volume-level access
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United States of America Patent
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Jul 7, 2009
Grant Date -
Jan 25, 2007
app pub date -
Jul 25, 2005
filing date -
Jul 25, 2005
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Abstract
A method for write protection in a storage system using both the “file-level WORM function” and the “block-level WORM function”. The block-level WORM function has two modes: the first mode is to prohibit both file access and block access, and the second mode is to prohibit block access only. When a user uses the file-level WORM function to prohibit write access to a file in a volume, a file access invokes the first mode of the block-level WORM function to prohibit write access to the volume where the write prohibited file resides.
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