"David Mathog" wrote:
>
>  dd if=/dev/zero of=/dev/nst0 bs=8192 count=10000
>
>only moves 21.3MB/sec.

David,

Are you using LTO-3 tapes?  An older gen tape could do it.

Also I have seen instances where /dev/zero is no longer a device but has turned 
into
a file. Maybe a big file due to an incorrect "dd of=" option at some stage. From then on your dd tests would be measuring your root disk performance.

Regards
Brett Worth
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