The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2014
Filed:
Jun. 26, 2012
Geoffrey S. Barrall, San Jose, CA (US);
Simon L. Benham, Berskhire, GB;
Trevor E. Willis, Buckinghamshire, GB;
Christopher J. Aston, Bucks, GB;
Geoffrey S. Barrall, San Jose, CA (US);
Simon L. Benham, Berskhire, GB;
Trevor E. Willis, Buckinghamshire, GB;
Christopher J. Aston, Bucks, GB;
Hitachi Data Engineering UK Limited, Bracknell, Berkshire, GB;
Abstract
Apparatus for managing plural versions of a root node for an object of a file system manages an update data of a first version of the plural versions of the root node in a status in which (i) data of a second version of the plural versions of the root node is written from the second storage of the file server to the first storage and (ii) a new checkpoint, capable of being used when the object of the file system is recovered, is taken. The apparatus also manages an update data of the second version of the plural versions of the root node in another status in which (iii) data of the first version of the plural versions of the root node is written from the second storage of the file server to the first storage and (iv) a next new checkpoint is taken.