September 30, 201213 yr Hi All, I'm getting closer and closer to pulling the trigger on an unRaid build. I do have a question about SSDs, however. My MacBook Pro has a 512GB SSD in it, and thus, to fully back it up, do I need a 512GB drive in my unraid config? Or would an array of a bunch of 250GB drives make it work? I'm THINKING that the way unraid works, and the way that time machine works, I would have to have my backup bundle smaller than a single disk... right? That time machine bundle can't spread across multiple diskss... thanks!
October 1, 201213 yr thats a good question and I do not have an answer for you.. as far as the auto split and 2 drives, ill assume it wont, it will see the end of drive one and stop the backup. other would have more knowledge then me on this. I'll tell you that an SDD for time machine is a bit of an overkill. after the first backup, TM does not copy much over. just whats changes since the last back up (2 hours ago is default I believe) I have several SSD's in both of my mac pros (the macs are not attached to unraid) one is dedicated just to TM in each machine. I just pulled the Time Machine SSD's out of them and put some 7200 RPM laptop drives in my macs for TM. I am not seeing a noticeable difference in back up or rebuild performance. I guess that was a long winded way of saying, I don't think you will see a performance increase with SSD's for TM. at least not for a single MAC ==> TM backup. Also, keep in mind the SSD in unraid as a data drive is still limited by your parity drives speed. that is unless its your cache drive
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