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:
May. 31, 2011
Filed:
Aug. 22, 2003
Rui Liang, Natick, MA (US);
Jiannan Zheng, Ashland, MA (US);
Mark K Ku, Braintree, MA (US);
Xiaoye Jiang, Shrewsbury, MA (US);
Sorin Faibish, Newton, MA (US);
Rui Liang, Natick, MA (US);
Jiannan Zheng, Ashland, MA (US);
Mark K Ku, Braintree, MA (US);
Xiaoye Jiang, Shrewsbury, MA (US);
Sorin Faibish, Newton, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A storage object such as a virtual disk drive or a raw logical volume is contained in a UNIX compatible file so that the file containing the storage object can be exported using the NFS or CIFS protocol and shared among UNIX and MS Windows clients or servers. The storage object can be replicated and backed up using conventional file replication and backup facilities without disruption of client access to the storage object. For client access to data of the storage object, a software driver accesses the file containing the storage object. For example, a software driver called a virtual SCSI termination is used to access a file containing a virtual SCSI disk drive. Standard storage services use the SCSI over IP protocol to access the virtual SCSI termination. An IP replication or snapshot copy facility may access the file containing the virtual SCSI disk drive using a higher-level protocol.