DocumentCode :
2858707
Title :
Communicating Quality of Service Requirements to an Object-Based Storage Device
Author :
Osowski, Kevin Klein ; Ruwart, Tom ; Lilja, David J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
fYear :
2005
fDate :
11-14 April 2005
Firstpage :
224
Lastpage :
231
Abstract :
Obtaining consistent bandwidth with predictable latency from disk-based storage systems has proven difficult due to the storage system´s inability to understand Quality of Service (QoS) requirements. In this paper, we present a feasibility study of QoS with the Object-based Storage Device (OSD) specification. We look at OSD´s ability to provide QoS guarantees for consistent bandwidth with predictable latency. Included in this paper is a description of QoS requirements of a sample application and how these requirements are translated into parameters that are then communicated to, and interpreted by, the OSD. Implementation problems lead to the failure of a hard real-time QoS model, but this failure is not due to the OSD protocol. The paper concludes with a description of how well the Revision 9 OSD standard (OSDR9) is able to accommodate QoS. We provide suggestions for improving the OSD specification and its ability to communicate QoS requirements.
Keywords :
formal specification; object-oriented programming; quality of service; storage management; OSD protocol; disk-based storage system; object-based storage device specification; quality of service requirement; Bandwidth; Computer interfaces; Delay; Internet; NASA; Protocols; Quality of service; Space technology; Storage area networks; System testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mass Storage Systems and Technologies, 2005. Proceedings. 22nd IEEE / 13th NASA Goddard Conference on
Print_ISBN :
0-7695-2318-8
Type :
conf
DOI :
10.1109/MSST.2005.7
Filename :
1410740
Link To Document :
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