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More Than an Interface—SCSI vs. ATA

Abstract: 

This paper sets out to clear up a misconception prominent in the storage community today, that SCSI disc drives and IDE (ATA) disc drives are the same technology internally, and differ only in their external interface and in their suggested retail price. The two classes of drives represent two different product lines aimed at two different markets. In fact, both classes contain a range of products that address a variety of features and usage patterns beyond simply the interface used to talk to the device. The target market and final product specification are taken into account from the earliest design decision through the manufacturing and testing process. This paper attempts to clarify the differences by illuminating some of these design choices and their consequences on final device characteristics. This will hopefully allow the community to build better storage systems with better knowledge of the trade-offs being made and the performance characteristics that result.

Dave Anderson, Seagate Research

Jim Dykes, Seagate Research

BibTeX
@inproceedings {270335,
author = {Dave Anderson and Jim Dykes},
title = {More Than an {Interface{\textemdash}SCSI} vs. {ATA}},
booktitle = {2nd USENIX Conference on File and Storage Technologies (FAST 03)},
year = {2003},
address = {San Francisco, CA},
url = {https://www.usenix.org/conference/fast-03/more-interface{\textemdash}scsi-vs-ata},
publisher = {USENIX Association},
month = mar,
}
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Links

Paper: 
http://www.usenix.org/events/fast03/tech/full_papers/anderson/anderson.pdf
Paper (HTML): 
http://www.usenix.org/events/fast03/tech/full_papers/anderson/anderson_html/index.html
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