Patent · US Active

Method for controlling data write to virtual logical volume conforming to thin provisioning, and storage apparatus

US8533419B2 · kind B2 · utility

3Cited by
6References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 11, 2012
Grant dateSep 10, 2013
Priority date
Expiry dateSep 11, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F11/1076
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

The virtual volume is a virtual logical volume that conforms to Thin Provisioning, and is a logical volume configured from a plurality of virtual areas and used by a plurality of applications. In a case where the storage apparatus receives a write request comprising write-destination information for identifying a write-destination virtual area in the virtual volume, and, in addition, the write-destination virtual area is an unallocated virtual area, the storage apparatus selects a medium, which corresponds to the write to the write-destination virtual area and/or the identification information of the source of this write, from a plurality of media, which have different performances and which are each configured from two or more real areas, and allocates a real area from the selected medium to the write-destination virtual area.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.