On Friday 16 December 2005 13:30, Joshua Baker-LePain wrote: >On Fri, 16 Dec 2005 at 1:08pm, Gene Heskett wrote > >> That almost sounds like he would need a dedicated hardware raid to >> use as a holdng disk then. Ouch. And maybe futile unless that same >> controller can also handle the tape & library, in which case the >> devices could negotiate their own transfers between themselves, at > >I've got a 4 disk SATA RAID0 on a 3ware controller for the holding > disk. > And what speeds are reported by "hdparm -tT /dev/md0"?
>> whatever the limiting speed of the cable might be. This library is >> I take it, a scsi3 wide interface? 320mb/sec rated? > >Yep. In my case, the library is the only thing on the SCSI chain. Which means the data has to piped thru the pci bus, so the maximum on a non-pci-x buss is 133MB/sec. And the average will be somethat less than that when the handshaking is factored in. But only 2.5MB/Sec says there is a very small pinhole someplace its being forced through. -- Cheers, Gene People having trouble with vz bouncing email to me should use this address: <[EMAIL PROTECTED]> which bypasses vz's stupid bounce rules. I do use spamassassin too. :-) Yahoo.com and AOL/TW attorneys please note, additions to the above message by Gene Heskett are: Copyright 2005 by Maurice Eugene Heskett, all rights reserved.