Craigo5000 Posted October 22, 2015 Report Share Posted October 22, 2015 Obviously retrospect 10.5 writes in it's own proprietary format but there is mention of LTFS support. Can anyone explain exactly what this entails? I've tried to read an LTFS formatted LTO5 tape made with my Xendata set-up and Retrospect ID's the tape as "unsupported" so you can't gain access to the contents. Is it possible create an LTFS formatted LTO tape out of Retrospect from it's own proprietary format? I'm trying to evaluate how good this Retrospect "LTFS support" is but if it can't read an LTFS tape or make one, then what is exactly the deal? Thanks 4 Quote Link to comment Share on other sites More sharing options...
jotrago Posted October 22, 2015 Report Share Posted October 22, 2015 LTFS is a driver which uses an LTO5 or later drive and presents it as a disk to the OS, just as your Xendata system does. This item indicates that you can use an LTFS Disk Target with the Duplicate function, which simply copies files, in their original format to another disk location. In this post, Mayoff indicates you should NOT use LTFS as a Retrospect Disk Target Device due to the way Retrospect writes its Backupsets, allowing for deduplication etc. http://forums.retrospect.com/index.php?/topic/147996-retrospect-and-ltfs/ Alternatively I believe the Xendata system can present the LTFS file system as a NAS Share on the network. You may also be able to use that as a target for Duplication. 1 Quote Link to comment Share on other sites More sharing options...
Craigo5000 Posted October 28, 2015 Author Report Share Posted October 28, 2015 Thanks for the detailed response. I'll do some testing. Quote Link to comment Share on other sites More sharing options...
jotrago Posted October 29, 2015 Report Share Posted October 29, 2015 I see one of the links didn't come through in my first post This item indicates that you can use an LTFS Disk Target with the Duplicate function, which simply copies files, in their original format to another disk location. Was referring to this link http://www.retrospect.com/en/blog/2014/01/19/tape_device_updates LTFS was originally developed by IBM, who released their Driver as Open Source, it is still available on their site if you want to experiment. It has since been taken up by most other LTO manufacturers and tape based storage companies, and there are now many products based on it. https://en.wikipedia.org/wiki/Linear_Tape_File_System Quote Link to comment Share on other sites More sharing options...
AmandaRice Posted April 19, 2016 Report Share Posted April 19, 2016 I have some information here that may help you. Just browse on this link: http://www.storagedna.com/media/documents/StorageDNA_whitepaper_Facts-about-LTO-LTFS_web.pdf This be a good reference upon writing an LTFS LTO tape. . Quote Link to comment Share on other sites More sharing options...
DavidHertzberg Posted March 13, 2017 Report Share Posted March 13, 2017 Guess what's in Retrospect Windows v12; see here on page 8. Quote Link to comment Share on other sites More sharing options...
DavidHertzberg Posted April 11, 2017 Report Share Posted April 11, 2017 Oops, according to this Knowledge Base article the LTFS support is only for Copy/Duplicate; it does not support Backup or Archive scripts. I'm not sure this is actually an improvement on what was available previously in Retrospect for LTFS—see the last paragraph. And JoTraGo discusses what was available previously in post #2 in this very thread. The link to the Retrospect Blog article in my second sentence of this post is actually from post #4; JoTraGo meant to include that link as well in post #2, but it "didn't come through". Quote Link to comment Share on other sites More sharing options...
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