DocumentCode :
3047699
Title :
A case for fault-tolerant memory for transaction processing
Author :
Bhide, Anupam ; Dias, Daniel ; Halim, Nagui ; Smith, Basil ; Parr, Francis
Author_Institution :
IBM T.J. Watson Res. Center, Yorktown Heights, NY, USA
fYear :
1993
fDate :
22-24 June 1993
Firstpage :
451
Lastpage :
460
Abstract :
For database transaction processing, the authors compare the relative price-performance of storing data in volatile memory (V-mem), fault-tolerant non-volatile memory (FT-mem), and disk. First, they extend Gray´s five-minute rule, which compares the relative cost of storing data in volatile memory as against disk for read-only data, to read-write data. Second, they show that because of additional write overhead, FT-mem has a higher advantage over V-mem than previously thought. Previous studies comparing volatile and non-volatile memories have focused on the response time advantages of putting log data in non-volatile memory. The authors show that there is a direct reduction in disk I/O, which leads to a much larger savings in cost using an FT-mem buffer. Third, the five-minute model is a simple model that assumes knowledge of inter-access times for data items. The authors present a more realistic model that assumes an LRU buffer management policy. They combine this with the recovery time constraint and study the resulting price-performance. It is shown that the use of an FT-mem buffer can lead to a significant benefit in terms of overall price-performance.
Keywords :
fault tolerant computing; Gray´s five-minute rule; LRU buffer management policy; disk I/O; fault-tolerant memory; five-minute model; inter-access times; price-performance; recovery time constraint; transaction processing; volatile memory; Computer aided software engineering; Costs; Delay; Fault tolerance; Nonvolatile memory; Power system modeling; Power system protection; Random access memory; Read-write memory; Transaction databases;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Fault-Tolerant Computing, 1993. FTCS-23. Digest of Papers., The Twenty-Third International Symposium on
Conference_Location :
Toulouse, France
ISSN :
0731-3071
Print_ISBN :
0-8186-3680-7
Type :
conf
DOI :
10.1109/FTCS.1993.627348
Filename :
627348
Link To Document :
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