Title :
Logical vs. physical disk shadowing
Author :
Graefe, Goetz ; Shapiro, Leonard D.
Author_Institution :
Colorado Univ., Boulder, CO, USA
Abstract :
Summary form only given. Bitton and Gray (1988) have defined disk shadowing as a technique for maintaining a set of two or more identical disk images on separate disk drives. Its primary purpose is to enhance reliability and availability of secondary storage by providing multiple paths to redundant data. The current paper demonstrates how disk shadowing can be further improved if not physical page images but logical data sets are mirrored with different clustering strategies on different disks
Keywords :
database management systems; reliability; availability; clustering strategies; disk drives; identical disk images; logical data sets; logical disk shadowing; multiple paths; physical disk shadowing; physical page images; redundant data; reliability; secondary storage; Arm; Availability; Database systems; Disk drives; Image databases; Indexes; Maintenance; Shadow mapping; Sorting; Telephony;
Conference_Titel :
Applied Computing, 1991., [Proceedings of the 1991] Symposium on
Conference_Location :
Kansas City, MO
Print_ISBN :
0-8186-2136-2
DOI :
10.1109/SOAC.1991.143853
