A hierarchical storage management (HSM) scheme for cost-effective on-line archival using lossy compression

Journal of Digital Imaging
D E AvrinR L Arenson

Abstract

A hierarchical storage management (HSM) scheme for cost-effective on-line archival of image data using lossy compression is described. This HSM scheme also provides an off-site tape backup mechanism and disaster recovery. The full-resolution image data are viewed originally for primary diagnosis, then losslessly compressed and sent off site to a tape backup archive. In addition, the original data are wavelet lossy compressed (at approximately 25:1 for computed radiography, 10:1 for computed tomography, and 5:1 for magnetic resonance) and stored on a large RAID device for maximum cost-effective, on-line storage and immediate retrieval of images for review and comparison. This HSM scheme provides a solution to 4 problems in image archiving, namely cost-effective on-line storage, disaster recovery of data, off-site tape backup for the legal record, and maximum intermediate storage and retrieval through the use of on-site lossy compression.

Citations

Sep 15, 1998·Journal of Digital Imaging·W M TellisR L Arenson
May 10, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·James McGuire

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