Are you writing to the same drive as you are reading from? If so that could be why it is so slow. Moving the drive heads back and forth take time.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brian Friday Sent: Monday, May 21, 2007 3:46 PM To: 909linux.org general mailing list Subject: Re: [909linux] minimized partition image One catch not always mentioned is while the drives are auto sensing (1.5 vs 3.0) sometimes the chipsets are not auto sensing. VIA (may they burn in heck for having super cool smb factor systems but hideous chipsets) chipsets on the epia style board and perhaps others from them require you to manually instruct the hard drive to use only 1.5 Gbits mode. Usually this requires a super small jumper or a regular jumper on the hard drive itself. In addition there are some drives from seagate 7200.9 I think whose firmware also makes via systems headaches. On May 21, 2007, at 3:15 PM, Cress, Loren ((LLU)) wrote: > > http://en.wikipedia.org/wiki/Serial_ATA#SATA_3.0_Gbit.2Fs > > "[...] a 3 Gbit/s signaling rate was added to the Physical layer > (PHY layer), effectively doubling data throughput from 150 MB/s to > 300 MB/s." > > By my calculations, that should come out to about 2 1/4 minutes for > a 40 GB file. > > and > > "Backward compatibility between SATA 1.5 Gbit/s controllers and > SATA 3.0 Gbit/s devices was important, so SATA/300's > autonegotiation sequence is designed to fallback to SATA/150 speed > (1.5 Gbit/s rate) when in communication with such devices. In > practice, some older SATA controllers do not properly implement > SATA speed negotiation. Affected systems require user-intervention > to manually set the SATA 3.0 Gbit/s peripherals to 1.5 Gbit/s mode, > generally through the use of a jumper." > > Are you piping this through gzip or some other kind of process like > that? > > -----Original Message----- > From: [email protected] on behalf of Roger E. Rustad, Jr. > Sent: Mon 21-May-07 15:03 > To: 909linux.org general mailing list > Subject: Re: [909linux] minimized partition image > > Does anybody know how long it takes for SATA drives to transfer data? > > It's taken almost 3 hours to transfer about a 40GB Exchange private > DB, and I'm wondering if there is a problem or if it's a problem > related to the previous error. > _______________________________________________ > 909linux mailing list > [email protected] > http://909linux.org/cgi-bin/mailman/listinfo/909linux > > > <winmail.dat> > _______________________________________________ > 909linux mailing list > [email protected] > http://909linux.org/cgi-bin/mailman/listinfo/909linux _______________________________________________ 909linux mailing list [email protected] http://909linux.org/cgi-bin/mailman/listinfo/909linux
