>From: [EMAIL PROTECTED] >Date: Sun, 12 Jan 2003 18:03:54 EST > >In a message dated 1/11/03 Jeff Walther writes:
>>I'm trying to get a UL2D to work in an S900 but not having any luck. >>Now ordinarilly I'd think SCSI configuration or cable problem, but the exact >>same SCSI chain works fine with an Adaptec 2940U2B. I have an amphenol LVD >>SCSI cable and terminator. The drives I'm using are a pair of Western >>Digital WDE18300 18 GB LVD drives set to IDs 1 and 2. >>The machine is an S900 motherboard with a Sonnet G4/800. >They work in my 7500/200 604e. > >I have the same card, drives and SCSI cable installed with no problems. The >18 GB LVD Western Digital drives are set to ID 0 and ID 1. >Both drives were initialized with a hacked version of Drive Setup. The ATTO >UL2D is installed in the PCI slot next to the CPU card (nearest the power >supply). Glen, thank you. That is helpful. I think the card should work. I've just got to find which detail is causing the problem. At this point I'm thinking it's either: 1) incompatibility with G4/800 2) incompatibility with SoftRAID 3) incompatibility with LVD mode 4) cable and/or terminator issue 5) bizarre unexpected problem Your info can help me eliminate #3. Do you have evidence that you are operating in LVD mode? Have you benchmarked your drives and seen peak reads or writes above 40 MB/s? ExpressPro-Tools from Atto is handy for this. There's a benchmark option under the Utilities menu which measures peak and sustained transfer rates for your drives. Are you using the LVD (twisted pair) 68 wire cable and terminator? If so, do you know what brand you are using? I'm using SoftRAID 2.2 to format my drives. I did some more testing last night and when I put the UL2D in a different S900 with a G3 CPU and a single ended drive connected, it works fine. Hence, I should try switching out the G4/800 and also look to my cabling after all, despite the 2940U2B working. Jeff Walther -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
