On Thu, 18 Oct 2001, Fernyhough Mark wrote:
> Date: Thu, 18 Oct 2001 12:47:50 +0100
> From: Fernyhough Mark <[EMAIL PROTECTED]>
> To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> Subject: Quantum SuperDLT1 tapetype
>
> Hi
>
> I have just run tapetype on Quantum SuperDLT1 tape (SPARC Solaris8)
>
> tapetype -e 110g -f /dev/rmt/0bn -t SuperDLT1 yeilds
>
> define tapetype SuperDLT1 {
> comment "blar blar"
> length 96868 mbytes
> filemark 0 kbytes
> speed 9142 kps
> }
>
> Do these figures look right especially the filemark entry ?
If the filemarks are small enough (less then 512 bytes), they'll just be
roundoff error. That's probbably not to far off for a DLT style drive.
Filemarks are generally only really long (i.e. several Kb) on
rotating-head style drives (i.e. Exabyte, etc.) where an appendable
filemark pretty much has to eat several diagonal stripes on the tape
'cause the erase head is vertical.
Drives like DLT's which use disk-drive style head clusters can have
very short filemarks 'cause they can erase/overwrite with precision.
9.1MB/sec is *really* nice though...
Marc
