Analysis of asymmetric deterministic bitshift errors in a hard disk file

Author

Nunnelley, L.L. ; Burleson, M.A. ; Williams, L.L. ; Beardsley, I.A.

Author_Institution

IBM Corp., San Jose, CA, USA

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2306

Lastpage

2308

Abstract

An extensive statistical analysis of soft errors occurring in an IBM 3380 K hard-disk file has been made. About 90% of the errors was bitshift-induced involving a single bit. There was a high degree of early/late asymmetry. It is shown that decreasing system signal-to-noise ratio (S/N) increases the error rate, but reduces the early/late asymmetry. The repeatability of errors suggests that most errors happen at or near a media-direct site. Self-consistent write-process modeling, taking into account media defects, indicates bitshift and amplitude degradation commensurate with the experimental results

Keywords

error statistics; hard discs; magnetic recording; IBM 3380 K hard-disk file; amplitude degradation; asymmetric deterministic bitshift errors; media defects; media-direct site; signal-to-noise ratio; soft errors; statistical analysis; write-process modeling; Assembly; Degradation; Disk recording; Error analysis; Error correction codes; Hard disks; Signal to noise ratio; Silicon compounds; Statistical analysis; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104705

Filename

104705