1 / 21

DSS/Db Backups/HSM Overview

DSS/Db Backups/HSM Overview. David Wolfe. DSS-I. 102 CD ROM set POSS-I red XE plates SERC-J blue S plates Compressed ~10X http://archive.stsci.edu/cgi-bin/dss_form. DQVS. Palomar Quick-V GSC-I construction plates 39 CD ROM set Compressed ~10X

arama
Download Presentation

DSS/Db Backups/HSM Overview

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DSS/Db Backups/HSM Overview David Wolfe

  2. DSS-I • 102 CD ROM set • POSS-I redXE plates • SERC-J blueS plates • Compressed ~10X • http://archive.stsci.edu/cgi-bin/dss_form

  3. DQVS • Palomar Quick-V • GSC-I construction plates • 39 CD ROM set • Compressed ~10X • http://archive.stsci.edu/cgi-bin/dss_form

  4. XDSS • RED ( III-aF) • POSS-II XP images • Completed 897 out of 897, 100% • UK Schmidt XS images • Completed 592 out of 606, 98% • UK Schmidt ER images • Completed 270 out of 288, 94% • Compressed ~10X • Contained on Volumes 0001-0390 • Completed by end of 2000 • http://archive.stsci.edu/cgi-bin/dss_form

  5. XDSS(cont) • BLUE (III-aJ) • POSS-II XJ images • Completed 897 out of 897, 100% • Contained on Volumes 1001-1226 • INFRARED (IVN) • POSS-II XI images • Completed 340 out of 897, 38% • Contained on Volumes 2001-2084 • UK Schmidt IS images • Completed 151 out of 894, 16% • Contained on Volumes 3001-3043 • Compressed ~10X • Completed by mid 2001, telescope limited • http://archive.stsci.edu/cgi-bin/dss_form

  6. XDSS(cont) • Headers • Headers for all XDSS second generation scans • ftp://ftp.stsci.edu/software/casb/xdss/

  7. DB BACKUPS • DataBase about 1TB • How to handle such a large volume • Old method • Stand alone DLT drive, NT Backup • 9-10 hours per tape • 15+ tapes

  8. DB BACKUPS (cont) • New method • BackupExec by Veritas • DLT jukebox, 8 cartridges • Breakup into North and South • High through put • Less user interaction

  9. DB BACKUPS (cont) • Importance of the Backups • Large system, just in case of errors • Already had to use previous backups • Replaced corrupted files • Time Frame • Plans are for monthly • Minimal impact to production

  10. HSM • Hierarchical Storage Management • DiskXtender by OTG • Large storage by using DLT jukeboxes • 2 - 46 DLT tape jukeboxes • ~60GB/tape • Storing processing data • OOP, cutouts, deblend, rank…

  11. HSM (cont) • Ease of retrieval • All files visible from explorer • Right click on file to retrieve • Limited by physical disk space

More Related