02-21-2005 06:57 AM
Solved! Go to Solution.
02-21-2005 07:11 AM
02-21-2005 07:23 AM
Importing a media (or "list from media") will take about the same time as writing to the media at full speed). If if the media was full, importing (LTO media) will take no less then 2 hours.
02-21-2005 07:28 AM
02-21-2005 08:53 AM
Do you mean max time to import the tape or max time to restore the data ? It is not possible to predict the exact time but I don't belive the import will time will be more then 2-3h (if there is not an bottleneck with the internal database).
Restore times has much more dependencies, (e.g. networking, filesystem/disksystem performance, number of files etc.).
02-22-2005 02:20 AM
It doesn't help you now but it's highly recommended to set up a "little" backup of just the media database, if you have access to a 4mm tape (and the database will fit on a 4mm tape) then that is even better. Hand label the 4mm so that you don't need a database to know which is your latest.
If this happens again, you only have to scan that one tape into the database and then you can load all of you other tapes up quick.
If the 4mm isn't an option, you can define a tape in you library but you need to set aside a slot that is reserved for just that tape and that never is moved or you will not be able to identify the media database backup without the database itself.
02-22-2005 02:59 AM
If just the detail catalog is gone, then you would simply Import Catalog to browse files and directories again. But you could also simply kick off the restore manually specifying the items to be restored, if you know them specifically.
If the object is small, then the restore will go right to that space and read the entire object looking for the items you said to find. But if the object is large, or even the whole tape, then you might as well import catalog.
But if needing to import the tape again, you have no option except to sit and wait for that to finish. 12 hours has been what I have seen in the past for full LTO tapes.