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:
Apr. 16, 2019
Filed:
Dec. 22, 2016
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Liam Xiongcheng Li, Beijing, CN;
Xinlei Xu, Beijing, CN;
Lifeng Yang, Beijing, CN;
Huadong Li, Beijing, CN;
Jian Gao, Beijing, CN;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
There is provided a method and apparatus of expanding capacity for a cache array. The method includes in response to detecting that a first new cache disk is to be added to a first cache array, initializing the first new cache disk without disabling other cache disks in the first cache array; allocating a storage space for a cache page metadata based on a result of the initializing; storing the cache page metadata into an initialized directory logical unit number, DIR LUN; storing a copy of the cache page metadata from a memory into the DIR LUN to facilitate the first cache disk to be in a ready state; and in response to the first new cache disk being in the ready state, configuring the first new cache disk as being in an initialized state to expand the capacity of the first cache array.