On Jan 11, 2008, at 7:30 AM, James R Owen wrote:
Current testing indicates that a DR restore of a single 200GB FS from TSM continuous incremental backups on LTO3 tapes will probably take longer than a week to complete!
Jim - You don't list the premises upon which that conclusion is based, so we don't have an understanding of your derivation of that number. With a appropriate collocation, reclamation, Image backups - and opportunities presented with an Active-data Pool - I should think that restoral time could be much more reasonable. Geographically separated replication is another service restoration opportunity in the event of disaster. Cyrus data handling by TSM is largely just the old Many Small Files situation that we have to deal with in various contexts, with the added requirement of consistency of message files and their database. If the restoration data rate is substantially less than the backup rate, then there are likely client-side impediments which would need to be addressed. Richard Sims
