Hi Jim Jim Gray wrote:
I think LSST should plan to preserve ANY scientific data it publishes.
Yes, LSST will preserve every byte of every released catalog. I hope I did not imply otherwise! Every release will be kept (at least) in deep storage. The question is how much disk space we should assume we will need for serving these older releases from disks and what type of IO, MB/sec we should assume. I know we may have some extra "free" space because of the disk IO requirements, we actually started to consider using part of each disk for high-speed access and treat the rest as storage of infrequently accessed data (such as old releases). Thanks Jacek _______________________________________________ LSST-data mailing list [email protected] http://www.lsstmail.org/mailman/listinfo/lsst-data
