On Tuesday, November 24, 2015 10:10:17 PM Jon LaBadie wrote: > Suppose you have the 6Gb/sec interface. What about the disc > drives (particularly the holding disk). When have you seen > a disk drive that can match the interface spec? I.e. 600MB/sec. > And don't forget, while the holding disk is being read to send > data to tape, it is probably also writing multiple amdumps > that are still in progress. So yes, a striped RAID is probably > a good idea. >
Yeah I don't even know about that. I have an LTO-4 drive that can supposedly do 120MB/sec, but it never does more than 80. The array feeding it can read at over 400MB/sec, and the tape drive is attached to a dedicated PCIe SAS controller that should be able to do up to 3Gb/sec which is over 3 times the supposed drive speed. But it does 77MB/sec and that's it. No hardware compression, even. 80's fast enough for me so I haven't spent much time trying to figure out why, but it does bug me. And if I had an LTO-6 drive it would really bug me.
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