I agree, in my environment I have not seen anything that can saturate a 2GB FC link. I am thinking that choosing a drive with more speeds will give improved "real-world" performance rather than a drive that can peak very high. (although peaks of 180 MB/s would blow my socks off :) )
On 9/13/07, Gregory Demilde <[EMAIL PROTECTED]> wrote: > > The biggest problem is to have an architecture that can feed that > transfer rate .. because at those speed, one drive just saturates a > 2 Gb FC link. ;op > > On 9/13/07, Justin Piszcz <[EMAIL PROTECTED]> wrote: > > > > > > On Thu, 13 Sep 2007, Gregory Demilde wrote: > > > > > Native drive speed of the T10K is 120 MB/s ... it is even closer to > > > 130 MB/s..; so If you are using compression and you feed the data fast > > > enough you can go over the 170 MB/s.. I had peaks over the 180 MB/s > > > > > > > > > > > > On 9/13/07, Justin Piszcz <[EMAIL PROTECTED]> wrote: > > >> > > >> > > >> On Thu, 13 Sep 2007, Schaefer, Harry wrote: > > >> > > >>> FWIW, I have done write tests with ours and based on output from > iostat > > >>> -xtc, the write speeds were between 100-105 mb/sec... > > >>> > > >>> Harry > > >> > > >> But that is just the read speed of the hard drives yeah? If the data > > >> stream is compressed 2:1 the tape only writes then at 50-52.5 MiB/s. > > >> > > >> I recall watching catalog backups write to tape and I would see the > disk > > >> reading at 100-120 MiB/s, was the LTO-2 tape that is was backing the > > >> catalog up to writing that fast? No, compression was being used. > > >> > > >> Justin. > > >> > > >> _______________________________________________ > > >> Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > > >> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > > >> > > > > > > > > > -- > > > Gregory DEMILDE > > > Email : [EMAIL PROTECTED] > > > GSM : +352 691 915620 > > > > > > > I was referring to LTO-X but nice info! > > > > Justin. > > > > > -- > Gregory DEMILDE > Email : [EMAIL PROTECTED] > GSM : +352 691 915620 > _______________________________________________ > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu >
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