Hi Jon,

  I did. I gave me this:
define tapetype IBM-LTO7 {
    comment "Created by amtapetype; compression disabled"
    length 5876531200 kbytes
    filemark 4964 kbytes
    speed 291436 kps
    blocksize 2048 kbytes
}

The drive is SAS connected on a 6G HBA. I'm not sure what units kps is.

Thanks,
Greg


On Fri, Jun 30, 2017 at 5:18 PM, Jon LaBadie <[email protected]> wrote:

> On Fri, Jun 30, 2017 at 03:30:19PM -0400, Greg Dickie wrote:
> > Hi Alan,
> >
> >   Thanks for the response. It looks to me like taper is slow. I'm trying
> to
> > not use a holding disk, the NAS is 250TB and doesn't make sense to have
> > 250TB locally to cache it. It's connected by a 10G ethernet connection
> so I
> > "should" be able to stream pretty quickly from it. i did put a 1TB disk
> as
> > a part cache but that seemed to behave the same way.
> >
> Have you run amtapetype to see what speed
> you might expect as a maximum?
>
> Admins have often had great difficulty getting
> LTO drives to run at rated speed.
>
> jl
> --
> Jon H. LaBadie                 [email protected]
>  11226 South Shore Rd.          (703) 787-0688 (H)
>  Reston, VA  20190              (703) 935-6720 (C)
>



-- 


Greg Dickie
just a guy
514-983-5400

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