×

Raid-group converting apparatus and method

  • US 8,533,527 B2
  • Filed: 12/11/2009
  • Issued: 09/10/2013
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
Patent Images

1. A RAID-group converting apparatus that converts two redundant-array-of-inexpensive-disks (RAID) groups into one RAID group, the RAID-group converting apparatus comprising:

  • a data-reading unit that reads at least non-parity data from data including the non-parity data and parity data, for each stripe from a plurality of recording media belonging to the two RAID groups;

    a parity-generating unit that generates two parities using the data belonging to a same stripe read by the data-reading unit; and

    a parity-writing unit that dispersively writes the two parities generated by the parity-generating unit into parity storage areas belonging to the same stripe, andwherein the RAID-group converting apparatus converts two RAID groups without adding any disks.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×