>Is a Seagate Cheetah 18 GB LVD Ultra SCSI 2 10K RPM drive fully >compatible and useable as-is (no special controller) on an 8500 or >9500 Powermac?
LVD/SE drives are implicitly compatible with SCSI-1 and SCSI-2 controllers, when used with an adapter which converts the 16-bit LVD/SE bus to the 8-bit host bus, such as those found on the 8500/9500 and later machines. The drive is capable of detecting when an SE bus is being employed, and to automatically reconfigure itself for such a host bus. Of course, best performance is achieved (perhaps 4 times the throughput, more or less) with a purpose-built controller. ATTO/Apple is one example of a purpose-built controller, and in one configuration, not necessarily an Apple configuration, this controller supports two independent wide, high-speed SCSI controllers, with both dual 68-pin ribbon connectors internally and dual 68-pin VHDCI cable connectors externally. Cheetah drives are hot runners, and should be installed in a way which ensures proper cooling. When so installed, these drives are exceptionally reliable. Specifically, a 68- to 50-pin adapter should be selected to as to ensure proper drive cooling. However, it is always best to operate these drives in 16-bit mode, at the expense of an additional PCI card, but which eliminates the need for drive adapters. -- 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
