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:
Oct. 27, 1998
Filed:
May. 10, 1996
David Lee Smith, San Francisco, CA (US);
William J Keenan, Redwood, CA (US);
Steven James Szymanski, Cupertino, CA (US);
Apple Computer, Inc., Cupertino, CA (US);
Abstract
A memory management system and method of managing a memory system are disclosed. The memory management system includes a plurality of physical storage media and a memory manager for generating virtual storage devices or 'stores,' with one or more first storage devices each having a corresponding first mapping plug-in, or device driver, associated with the plurality of physical storage media. Each first device driver scans its corresponding first storage device to determine its partitioning format and generates one or more second virtual storage devices from a partition map stored in the partitioning plug-in, or partition manager, associated with the corresponding first storage device, each second virtual storage device having one or more second partitioning formats, a second partition manager and second device driver. The first and second partition managers are independent of the first and second device drivers. The separation of disk driver and partition manager functions allows for the nesting of partition formats and avoids the replication of partitioning codes. The physical storage media may include at least one redundant array of independent disks (RAID), and the first device driver may be a small computer systems interface (SCSI) associated with the physical storage device.