Patent ID: 9213731
Filing Date: 2015-12-15
Classification: G06F

Abstract:
1. A non-transitory computer-readable storage medium having computer-executable instructions for causing a computer system to perform a method comprising: accessing a block of data in a data file that is stored in a first tier of a multi-tier storage system, wherein said block of data comprises a plurality of rows and a plurality of first entries including a first entry per row, wherein each of said rows comprises a respective value for said first entry; comparing each value of said plurality of first entries to a threshold value; determining that said block of data is to be moved from said first tier to a second tier of said storage system if each value of said plurality of first entries is above said threshold value, wherein said second tier is different from said first tier and said first tier comprises faster performing storage than said second tier; if said block of data is to be moved from said first tier, then relocating said block of data to said second tier, and otherwise continuing to store said block of data in said first tier; and repeating said accessing and said determining operations at subsequent points in time to determine whether said block of data should be relocated.