brettp Posted April 9, 2008 Report Share Posted April 9, 2008 Hello, I'm trying to do restores from a very large backup catalog file that we have. It manages 21 400gb LTO3 and it's becoming cumbersome on restoring all data and at times, just hangs for hours during the restore. Is there a way to just restore the data from 1 particular tape of my choosing, that's used in the set? I'm thinking I can manage this full restore of data better if I can go a tape at a time but don't know where to run it like that. Thanks for any help, Brett Quote Link to comment Share on other sites More sharing options...
Mayoff Posted April 9, 2008 Report Share Posted April 9, 2008 If you pick one specific file or even a folder, Retrospect will ask you to only insert the tape for that file. Quote Link to comment Share on other sites More sharing options...
CallMeDave Posted April 9, 2008 Report Share Posted April 9, 2008 Is there a way to just restore the data from 1 particular tape of my choosing, that's used in the set? No. Retrospect is not designed to work that way. it's becoming cumbersome on restoring all data and at times, just hangs for hours during the restore. Certainly swapping tapes manually (without a helpful library robot) can be cumbersome. But what exactly are you trying to do that is causing it to hang? And at what point in the process is it hanging? Quote Link to comment Share on other sites More sharing options...
brettp Posted April 9, 2008 Author Report Share Posted April 9, 2008 I'm not trying to do just one set of files or just one folder that was backed up. My project has me pulling ALL files off of all the tapes. If I may, I'll write out what I'm trying to do. We backed up enough finished art files from our design studio to fill 21 400gb LTO3 tapes. We are pulling ALL files from all tapes and putting them onto a 30tb RAID system so they will be available for all users to get to at any point. We will still keep these tapes around in case of drive failure plus any new files will be added to this same backup catalog. When they were backed up to tape, the files were sitting on individual Lacie TB drives. My practice was to backup the entire Lacie drive when it was filled up. So if I look in Retrospect through the "restore an entire disk" option, I can see each of the Lacie drives I was using. Now what I am doing is a "restore from disk" and choosing one of these drives and put the necessary tapes in my library. A lot of time when I'm running this restore it will get to a point during and run incredibly slow. Incredibly slow like 1mb a minute and do this for hours. It's not like I'm trying to write across the network. The library is directly attached to where I have Retrospect installed, and I am doing a restore to internal drives on the server, then will move them over to the large RAID array. So let me rephrase my original question. Is there a best way someone recommends to do these restores? Can I do it a tape at a time and maybe through doing it this way, find out if I have damaged media? Any help is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Mayoff Posted April 9, 2008 Report Share Posted April 9, 2008 What version of Retrospect is this? What operating system? What type of SCSI card is being used? How much RAM on the computer? Do you see this slow performance when writing to a different set of disks? Quote Link to comment Share on other sites More sharing options...
rhwalker Posted April 9, 2008 Report Share Posted April 9, 2008 and what computer? Quote Link to comment Share on other sites More sharing options...
brettp Posted April 9, 2008 Author Report Share Posted April 9, 2008 Computer specs: Mac Pro, Leopard 10.5.2, 4gb RAM, 4 750gb internal drives in a RAID 5, ATTO UL5D PCIe card. Mayoff, you ask about writing to different sets of disks, do you mean when writing to a different drive on my network like a network share? I haven't tried that as I didn't want the potential of clogging some network resources, but I could give it a shot. Quote Link to comment Share on other sites More sharing options...
Mayoff Posted April 9, 2008 Report Share Posted April 9, 2008 If the restore is slow when writing to the RAID, it would be a good test to see the speed when writing to a different disk, like a network share. Quote Link to comment Share on other sites More sharing options...
brettp Posted April 9, 2008 Author Report Share Posted April 9, 2008 (edited) I can try this but it's weird in that I can get a couple hundred GB into the restore then it just hangs. Usually at about the same point. So I think it may be media issues but can't say for sure. Edited April 9, 2008 by Guest Quote Link to comment Share on other sites More sharing options...
Mayoff Posted April 9, 2008 Report Share Posted April 9, 2008 If it always stops at the same point, then mark that tape as missing and try restoring from the next tape. Quote Link to comment Share on other sites More sharing options...
brettp Posted April 9, 2008 Author Report Share Posted April 9, 2008 It never really stops though. It keeps moving but incredibly slow. Here's what we've gotten through today. Started a restore @ 9am eastern, ran through 180gb with no issues, then since 12:25, we've only been able to restore about 1gb, in the last 2 hours. It's still moving but we have several hundred more GB of data to bring back. Quote Link to comment Share on other sites More sharing options...
brettp Posted April 9, 2008 Author Report Share Posted April 9, 2008 oh, and that's just a single restore. We have 2 more of these Lacie drive backups to go, that we've seen the same behavior from. We've gotten the other 5 Lacie disks restored already so I know our process can work. I just don't know if it's something in the catalog file or if it's the media. Thus, trying to think of alternate methods of restoring. Quote Link to comment Share on other sites More sharing options...
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