tape backup corruption and help | ||||||
| posted by Gresham Lochner on Oct. 6, 2014, 11:05 p.m. (1 day ago) | ||||||
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| Thread Tags: discuss-at-studiosysadmins | ||||||
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| Hi, We're having difficulties with tape backup and are hoping to get everyone's opinion on what we're doing and see if there is a resolution. Right now we're using LTO5 as LTFS in Windows 7. The drive is a Quantum TC-L52BN. Originally we were copying data using a program called SyncBack. However, we were getting really slow speeds and the device was "shoe-shinning". It would constantly speed up and slow down. We installed cygwin and used rsync (rsync -av), and that gave us more reliable transfer speeds. When we viewed the data right after copying, it looked fine. However, when we removed the tape and put it back in the drive, we noticed some nasty horizontal black lines going across our .dpx frames. I've attached an image to this email of what we're seeing. Has anyone seen this before? I'm wondering if this is a cygwin issue or rsync issue. Or maybe this has to do with windows. I've tested using the not as elegant cp command and that seems to work on small cases (e.g. one dpx) but I haven't tried it on a large data set. We haven't tried the process on linux. I think the reason we didn't go with linux is because we knew the driver for the SAS card worked in windows, but didn't try it on Ubuntu 12.04. If anyone recommends us doing that, we're willing to go down that road. But we're pretty adamant about using LTFS and not tarring archives. Does LTFS work the same in linux? Thoughts? Thanks, - Gresham |