On Fri, 22 May 1998 at 9:56:05 -0700, Jim Van Baalen wrote:
I have been dumping several machines to local 8mm drives. Dump writes to
these drives at about 4mbps.
What kind of drives are these? Most Exabytes maxe out at about 1
To conserve resources I have been trying to dump to the same model
drive on a remote machine using the <hostname>: notation. When I do
this dump writes at about .5mbps. Both machines are on dedicated
10bt switched connections and dump is definitely not taxing the 10bt
connection. Both machines are 266Mhz which I have seen easily fill a
switched 10bt connection. Neither machine is working particulary
hard independent of the dump. I have tried replacing the 3COM 3C905
Fast Etherlink XL PCI with the Intel EtherExpress Pro 10/100B
because I have had NFS problems while using the 3COM card. It
appears the the default block size for dump is 1024 (as opposed to
8192 for NFS) so it I didn't think this would work, but I had the
cards... With typical disk capacities of 4-9Gb dumping a drive at
this speed can take over a day.
Is this expected behavior?
I'd expect that of non-compressing dumps. What kind of tape hardware
are you using? Are you compressing?
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