scsctech Posted December 30, 2009 Report Share Posted December 30, 2009 (edited) I want to be sure there are some success stories out there for this configuration before I upgrade our hardware. Currently we have: 1 xserve for engine 1 overland 10 tape LTO-4 autoloader 130 clients Unfortunately what we run into is that it can take 7 days sometimes to run through all of these clients and thus get "you havent been backed up in 7 days" warnings. Seven days is way beyond my supervisors comfort level anyway. What we want to do: Add 1 16tb SAS RAID with two virtual drives. Run simultaneous backup scripts to the individual logical drives Run a systematic backup from the RAID to the LTO-4 thoughts/concerns? Edited December 30, 2009 by Guest Quote Link to comment Share on other sites More sharing options...
cristiano.cumer Posted January 3, 2010 Report Share Posted January 3, 2010 (edited) Have a smilar setup, concurrent backups to an 10 TB iScsi drive, and than once per month I copy the last backup of every client to tape. I have also a scheduled grooming script to keep the backups form growing to large. It works, as long retrospect behaves well. Cristiano Edited January 3, 2010 by Guest Quote Link to comment Share on other sites More sharing options...
scsctech Posted January 4, 2010 Author Report Share Posted January 4, 2010 Thanks for the response! I just placed the order for the RAID. I will have to do some research on grooming since there is no manual as of yet. How is the performance on the RAID backup vs your tape? What kind of tape are you using? cheers Quote Link to comment Share on other sites More sharing options...
rhwalker Posted January 4, 2010 Report Share Posted January 4, 2010 I will have to do some research on grooming since there is no manual as of yet. A two second search of the Retrospect Knowledge Base reveals, among others: What is Grooming and how does it work? Groomiing Tips and Troubleshooting Russ Quote Link to comment Share on other sites More sharing options...
cristiano.cumer Posted January 4, 2010 Report Share Posted January 4, 2010 Hello, How is the performance on the RAID backup vs your tape? What kind of tape are you using? Single BU performance is about the same, but you can run them in parallel. I get speeds from 200 MB/min (linux) to 1.7/2.1 GB/min with mac clients. The advantage of grooming is that you perform the full backup just once, subsequent backups are only incremental. Keep in mind that grooming time depends on number of files in a backup, non on the mediaset size. So try to balance the number of mediasets versus the number of clients. Performance copying from the disk to the tapes is also between 1-2 GB/min. I have a NEC LTO4 SAS autoloader. Ciao Cristiano Quote Link to comment Share on other sites More sharing options...
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