>Does anyone know if there is anything I would want to know about the >difference between the SIIG and the Sonnet? > >Charles, have you had any experience with the SIIG?
I have only used the Sonnet cards. I no longer try to find 50-pin SCSI drives for our 7500, 7600, 7300, 8600, 9600 systems, I just get a IDE card and drive. The cost isn't much different. I try to use the same cards once I find one that works well. >> 400 MHz G3 (in 9600) - 17 MB/sec minimum, 24 MB/sec maximum >> A 10,000 RPM Ultra SCSI drive on a ATTO card tested at 32 MB/sec in >> the 9600. > >Much of the difference in speed is most likely contributed to the fact >that ATA fires lots of interrupts over the PCI bus at the CPU while it >is reading and writing, I notice disk access in my G3 slows the whole >damn shop down a lot. SCSI however does not. If I run a program on my >7300 in 10.1.5 it makes very little difference to the speed of the >(admittedly already slow) machine. Yes, the CPU has to touch almost all the data on a IDE bus, while SCSI controllers off-load much of the processing from the CPU. Plus the whole tagged-command queuing issue. SCSI is _almost_ always faster than IDE, but I really didn't want to spend $2000 on a U160 card and 15K RPM hard drives if I didn't really have to ;) If you don't need to extra performance, why pay the difference? By the way, our current Media 100 suites use Adaptec SCSI cards and FWB formatting software for striping data (on older drives). I measure from 36 to 42 MB/sec under OS 9.x using TimeDrive, so the ATA100 card and drive beat that under OS X. Nothing like comparing old, expensive technolgy to newer, cheaper technology, huh? -- Charles Dostale System Administrator Silver Oaks Communications http://www.silveroaks.com 824 17th Street Moline IL USA 61265 [EMAIL PROTECTED] 309-797-9898 -- Unsupported OS X is sponsored by <http://lowendmac.com/> Support Low End Mac <http://lowendmac.com/lists/support.html> Unsupported OS X list info <http://lowendmac.com/lists/unsupported.html> --> 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/unsupportedosx%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
